HomeMy WebLinkAbout~Master - Plumbing Regulations ORDINANCE N0, 542
RULE AND REGULATIOidS GOVERNING PLULIBING IN THE CITY OF AMES� IOWA
AN ORDINAP,T CE TO PRESCRIBE RULES AND REGULATIONS FOR THE
CONSTRUCTION, RECO11STRUCTION, ALTERATION AND R112AIR OF
PLUP3BING AND HOUSE DRAINAGE SYSTKj,'S IN BUILDIIGS OR
CONNECTING BUILDINGS WITH SEWERS OR PRIVATE DISPOSAL
PLANTS AND WATER I:IAINS IN THE CITY OF A11ES IO17A; AND
THE ISSUANCE OF PERIiITS THEREFOR TO PROVILE FOR THE IN-
SPECTIOII OF SUCH PLUMBING AND HOUSE DRAINAGE AND SEWERAGE
SYSTE11S AND FOR THE ENFORCING OF SUCH RULES AND REGULA-
TIONS, AND TO PRESCRIBE PENALTIES FOR A VIOLATION THEREOF.
Be It Ordained by the City Council of the City of Ames, Iowa:
ARTICLE I
DEFINITIONS OF TERMS
Section 1. DEFINITIONS OF TER1-1S. The following definitions
shall apply to all terms and provisions of this ordinance.
Section 1.1. JOURN= AN PLUP!IBER. The terra "journeyman nlumb
er" small mean a person who does any plumbing work which is by law,
ordinance or rule subject to official inspection. Only such nersois
as have a valid ,journeyman plumber' s license issued by a Board of
Plumbing Examirws in the State of Iowa as defined in Chapter 292,
Code of Iowa, 1939, shall be qualified journeyman plumbers under
the nrovisidns of this ordinance.
Section 1.2. I�,IASTER PLUMER. The term "master or employing
lumber" shall include any person, firm or corporation other than
Journeyman plumber engaged in the business of installing plumbing
my such nersons, firms or corporations as have a valid master
lumber's license issued by a Board of Plumbing Examiners in the
Late of Iowa as defined in Chapter 292, Code of Iowa, 1939, shall
e qualified master or employing plumbers under the ;provisions of
his ordinance.
Section 1.3. APPRENTICE PLU11BER. One who is learning the
trade of nlumbing under the supervision and instruction of a
icensed plumber.
Section 1.4. PLM;IBING INSPECTOR. The duly appointed repre-
entative of the City authorized to make plumbing inspection.
Section 1. 5. AIR GAP. The air gap in a water supply system
s the unobstructed vertical distance through the free_ atmosphere
ettiveen the lowest opening from any pipe or faucet supplying water
o a tank or plumbing fixture and the flood level rim or spill
evel of the receptor.
Section 1.6. BRANCH. The branch of any system of ?piping is
hat nart of the system �:�1ich el--tends horizontally at a slight grad
ith or without lateral or vertical extensions or vertical arms, .
rom the main to receive fixture outlets not directly connected to
he main.
Section 1.7. CIRCUIT VENT. A circuit vent is a group vent
extending from in front of the last fixture connection of-a horizo -
tal branch to the vent stack.
Section 1.8. COIITINUOUS-vrASTE-AItl,D-VENT. A continuous-waste-
and-vent is a vent that is a continuation of and in a. straight lip
with the drain to which it connects.
Section 1.9. CRITICAL LEVEL. The critical level of a back-
siphonaCe preventer, when a vacuum of fifteen inches of mercury or
greater exists in the supply line to the fixture, is the horizontal
plane through the preventer to which it (the preventer) can be im-
mersed in water, open to the atmosphere, before siph.onage begins
through the preventer. Conversely the critical_ level may be de-
fined as the highest horizontal Plane to which the flood level of
a fixture can be raised, relative to a back-siphonage preventer
before six>honac;e begins, Then a vacuum of fifteen inches of mercury
exists in the supply line.
Section 1.10. CROSS CONNECTION (INTERCONNECTION) A cross I
connection or interconnection is any physical connection between t o
otherwise separate water-supply systems whereby water may flow
from one system to the other.
Section 1.11. DEAD END. A dead end is a, branch leading from
a soil, waste, vent, house drain, or house sewer, which is termina
ed at a developed distance of two feet or more bs: means of a cap,
plug, or other fitting not used for admitting water to the pipe.
Section 1.12. DIRECT CONNECTI011. A direct connection is
any Physical connection whereby it is possible for water or waste
to flow from one source or system to another.
Section 1.13, EFF"ECTIVE OPENING. The effective oti eninr is
the cross sectional area of the pa.ssagewa.y at the point-' of water
suPPly discharge. In the case of plumbing fixtures or devices,
the effective opening is the minimum cross sectional area of the
passageway between the point of discharge (spout) and the inlet to
the control valve. The basis of measurement for the effective
opening shall be the diameter of a circle of equal cross sectional
area. If two or more lines supply one outlet, the effective open-
ing shall be the sum of the areas of the effective openings of
the individual lines or the area of the outlet, whichever is the
smaller.
Section 1.1.4. FIXTURE DRAIN. A fixture drain is the drain
from the trai) of a fixture to the junction of the drain with any
other drain pipe.
Section 1.15. FIXTURE UNIT. A fixture unit is a, factor so
chosen that the load-Producing values of the different nlumbing
fixtures can be expressed approximately as multiples of that factor.
Section 1.16, FLOOD LEVEL. Flood level in reference to a
lumbing fixture is the level at which water be,;ins to overflow
he top or rim of the fixture.
Section 1.2.7. GRADE. The grade of a line of pine is its
lone in reference to a, horizontal plane. In plumbing it is usuall
xpressed as the fall in inches per foot length of pipe.
Section 1.18. GROUP VENT. A group vent is a branch vent
that performs its functions for two or more traps.
Section 1.19. HOUSE DRAII3. The house drain is that hart of
he lowest horizontal Piping of a house drainage system which
receives the discharge from soil, ,waste, and other drainage Pines
Inside the walls of any building and conveys the same to the house
ewer which begins five feet outside the inner face of the building
all.
Section 1.20, HOUSE SEXIER. The house sewer is that part of
he horizontal piping of a house drainage system extending- from the
Ouse drain five feet outside of the inner face of the buil.dinF,
all to its connection with the main sewer or private sewage dis-
posal .-corks and conveyin�-c the drainage of but one building site.
Section 1.21, INDIRECT WASTE PIPE. An indirect waste pipe
s a waste nine which does not connect directly with the building-
rainage system, but discharges into it through a properly trapped
fixture or receptacle.
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Section 1.22. LOCAL VENTILATING PIPE. A local ventilating
pipe is a pipe through which foul air is removed from a room.
Section 1.23. LOOP VENT. A loop vent is the same as a circuit
vent except that it loons back and connects with a soil-or-waste-
stack-vent instead of the vent stack.
Section 1.24. MAIN. The main of any system of horizontal,
vertical or continuous piping is that hart of such system which
receives the wastes, vent or back vents, from fixture outlets or
traps, direct or through branch pipes.
Section 1.25. PLUMBING, Plumbing; is the art of installing
in buildings the pipes, fixtures, and other apparatus for bringing
in the water supply and removing liquid and water carried �=ra.stes.
Section 1.26. PLU1,1BING FIXTURES. Plumbing fixtures are re-
centacles intended to receive and discharge water, liquid, or wa.te
carried wastes into a. drainage system with which they are directly
or indirectly connected.
Section 1.27. PLUMBING SYSTEM. The plumbing system of a
building includes the water supply distributing pipes, the fixtures
and fixture traps; the soil, waste, and vent pipes; the house drain
and house sewer; the storm-water drainage; with their devices,
appurtenances, and connections all rithin or adjacent to the
building.
Section 1.28, RELIEF VENT. A relief vent is a branch from
the vent stack., connected to a horizontal branch between the first
fixture branch and the soil or waste stack, whose primary function
is to provide for circulation of air between the vent stack and
the soil or waste stack.
Section 1.29. SIZE AND LENGTH. The given caliber or size of
pipe or tubing unless otherwise stated is the nominal size by whic '
the pipe or tubing; is commercially designated. The developed
length of a pipe is its length along the center line of pipe and
fittings.
Section 1.30. SOIL PIPE. A soil pipe is any pipe which con-
veys the discharge of eater-closets, with or without the discharge
from other fixtures, to the house drain.
I
Section 1.31. STACK. Stack is a general term for any vertical
line of soil, waste, or vent piping.
Section 1.32. STACK VENT. A stack vent is the extension of
a soil or waste stack above the highest horizontal or fixture
branch connected to the stack.
Section 1.33. TRAP. A trap is a fitting or device so con-
structed as to provide a liquid trap seal which will prevent the
passage of air or F,as through a ripe without materially affecting
the flow of sewage or waste water through it.
Section 1.34. TRAP SEAL. The trap seal is the vertical
distance between the crown weir and the dip of the trap.
Section 1.35. VENT PIPE. A vent pipe is any pipe provided
to ventilate a house-drainage system and to protect traps against
siphonage and back pressure.
Section 1.36. VEI4'T STACK. A vent stack, sometimes called a
main vent, is a vertical vent pipe installed primarily for the
purpose of providing; circulation of air to or from any part of the
building; drainage system.
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Section 1.37. WASTE PIPE. A waste pipe is any pipe which
receives the discharge of any fixture, except water-closets, and
conveys the same to the house drain, soil or waste stacks.
Section 1.38. WATER DISTRIBUiTION PIPES. The water distribu-
tion nines are those which convey water from the service pipe to
the plumbing fixtures.
Section 1.39. WATER SERVICE PIPE. The eater-service pipe is
the i-)ine from the water main to the building served.
Section 1.40. WET VENT. A wet vent is a soil or waste pipe
that serves also as a vent.
ARTICLE II
PERIITS, TESTING, AND INSPECTION
Section 2. PER:TIT REC%UIRED. No person, firm or corporation
shall begin work on the construction, reconstruction, alteration
or repair of any plumbing system in any building, or connecting
any building with any sanitary ser!er, private disposal plant, or
water main, in the City of Ames, Iowa, unless he or it,is a
licensed 11aster Plumber as certified by the Board of Plumbing
Exa-miners of the City of Ames or has in his or its employ a
licensed Master Plumber who will have supervision over all plumb-
ing worm done under the plumbing permit when issued (except as
provided in Section 6 of-' this Ordinance) and before beginning such
work has first obtained a, permit for the same from t`lie City Pvganage
of the City of Ames, Iowa.
No building outside the corporate limits of the City of Ames,
Iowa, shall be connected to the city sewer system or water mains
of the city until such connection has been authorized by the City
Manager of the City of Ames and an inspection of the plumbing
in the building has been made by the Plumbing Inspector of said
city.
Section 3. PLUMBING PERMIT. No person, firm, or corporation
other than a licensed master plumber, or person, firm or corpora-
tion having in its employ a master plumber, shall be :;ranted a
permit to slake any installation, extension, replacement, connectio
or addition to the plumbing; syster_. of a building; or to the sanitar
sewers or city water supply of the city.
Section 4. APPLICATIOI; FOR PERi::IT. Any person, firm or
corporation desiring a plumbing permit shall file with the City
Manager an application in writing; on the standard form provided by
the city for such permit.
Section 5. PER1.71T TO WHOM ISSUED. Upon the City Manager' s
approval or the application for a nermit as provided in Section 4
hereof, he shall issue a plumbing nerrait to the person, firm or
corporation applying therefor. Said permit shall not be in force
or effect until all inspection and other fees as provided herein
have been paid. No master plumber ' s license may be used to secure
a permit for anyone other than the person, firm or corporation to
whom such license has been issued.
Section 6, PERMITS NOT REQUIRED. No permits will be require
for the removal of stoppage in soil or waste pipes, or for re-
placinEx, broken fixtures or for resetting old fixtures, provided
such fixtures conform to the regulations contained in this ordi-
nance, nor for replacing tanks, other than hot water tanks, or
faucets or repairing leaks in waste pipes or the repair of water
pipes and annurtenances in the distribution system.
Section 7. SPECIAL P:TH. ITS. Where special fixtures, sewer
or ventilation constructions are reouired, for which there is no
Provision in this ordinance, the Plumbing Inspector may, upon
examination, recommend in writing to the City Manager, such rules
and regulations as in his judgment the condition may demand and
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upon the annroval of such recommendations, the City Manager may
issue a hermit for such work.
Section 8. REGISTRATION OF LICENSE. Any person, firm o r
corporation having a license granted by an authorized plumbing
examining board of any city, other than the City of Ames, Iowa,
shall register the same with the Plumbing Inspector of the City
of Armes, Io-.,a, before beginning any plumbing work in the city.
Section 9. WORK TO BE DONE BY LICEI>TSED JOURNE-Y'AEN PLMBERS.
All nlumbing work on the plumbing system of a building as defined
by the provisions of this ordinance shall be done by a licensed
journeyman plumber, except that an apprentice may assist a regular y
licensed plumber but must be actually with and in his presence while
so doing.
Section 10. SUPERVISION OF THE WORK. When a. hermit has been
issued for nluribinp, work, the doing of such Plumbing shall be unde
the supervision of the Plumbing Inspector, or his authorized
representative, at all times and until its completion and acceptance
and the City TvTanager may revoke said hermit at any time when such
Mork is not being done in accordance with the provisions of this
ordinance or the approved plans and neimnit; and if such permit
is revoked, it will be unlawful for any person to proceed further
with said work without approval of the Plumbing Inspector and the
written consent of the City Manager. All matters pertaining to
the cutting of )avement or excavation and filling of trenches
and ditches within the limits of streets and alleys shall be in
accordance with the provisions of the city ordinances relating
thereto.
When a permit has been issued to do plumbing; work, such work
shall be started 1,,jithin sixty w) days from date of the per mit,
and be completed within one �1) year after the beginning of the
work, otherwise such permit is null and void and a renewal of such
perriit must be obtained.
When a nerriit has been issued for plumbing work, no addit i ona
work not included in the hermit may be put in, or additional fix-
tures set, until a new per:.it for such additional work has been
first obtained.
Section 11. RIGHT TO INSPECT BUILDI1GS. The Plumbing
Inspector or his authorized re=?resentatives shall have access to
all buildings for the purpose of examining the plumbing work, at
any reasonable time.
Section 1_,2. NOTIFICATION OF INSPECTION. When roughing work
has been completed and before any such work has been covered or in
any way concealed from view and connected to the sewer or any fix-
tures set, the work shall be inspected as provided herein:
(a) It shall be the duty of the Master Plumber or his repre-
sentative, to notify the Plumbing Inspector not less than eight
(8) workin- hours betneen the hours of 8 A. M. and 4 P. 11. before
the work is to be inspected or tested, giving the 'permit number,
location of work, and the time when such work will be ready for
Inspection.
(b) It shall be the duty of the plumber to make sure that
the work will stand the test prescribed before giving the above
notification.
(c) If, after inspection, the Plumbing Inspector finds that
the work will not stand the test, the plumber shall be reouired to
renotify, as above and to pa.y a sum sufficient to cover all
expenses for each such additional inspection.
(d) If the Plumbing Inspector, or his authorized representa-
tive, after having been notified fails to appear within 24 hours,
exclusive of Sundays and holidays, after such notification, the
inspection or test shall be deemed to have been made, and the
plumber rec-uired to file an affidavit with the City I!ranager that
the work was installed in accordance with the ordinance and per-
mit, and that it was free from defects and that the required tests
had been made and the system was found free from leaks.
Section 13. MATERIAL AND LABOR FOR TESTS. The equipment,
material, power and labor necessary for the inspection and all
tests shall be furnished by the Vaster Plumber or his em,i)loyer.
Section 14. DESTROYING CERTIFICATE OF NOTICE. It shall be
unlawful for any person to wilfuLlly mutilate, deface, remove, or
destroy any certificate of notice placed by the Plumbing Inspector
in any buildinp7 in regard to the nlumbing work in such builaing.
Section 15. INSPECTION] AND TEST NOT REZUIRED. No tests or
inspections shall be required where a plumbing system, or part
thereof, is set up for exhibition nurposes and is not used for
toilet purnoses and not directly connected to a seweraCe system
nor after the repairing or replacing of an old fixture faucet,
or valve by a new one (to be used for the seine purpose ; nor
after forcing out stoppages and repairing leaks.
Section 16, DEFECTIVE FIXTURES. All installed fixtures
found defective or in an unsanitary condition shall be repaired,
renovated, replaced, or, removed within 36 days upon written notice
from the Board of Health.
Section 17. COVERZ_tiG OF 7ORK. No drainage or plumbing syste ,
or cart thereof, shall be covered until it has been inspected,
tested, and approved as herein prescribed.
Section la. U11COVLRING OF WORK. If any house drainage or
plumbing system, or hart thereof, is covered before being regularl
inspected and approved, as herein prescribed, it shall be un-
covered for insection/upon the direction of the Plumbing Inspecto .
byy the nlumber
Section 19, CERTIFICATE OF APPROVAL. Upon the satisfactory
completion and final test of the plurbing system a certificate of
approval will be issued to the owner by the Plumbing; Inspector.
Section 20, INSPECTION FEES. The following schedule of fees
and inspection charges shall apply to all work done under the nro-
visions of this ordinance except as otherwise noted herein:
Inspection Fees:
(a.) Each plumbing fixture installed .$0.50
(b) All hot dater storage tanks or range
boilers .25
(c) Renewal of fixture trap . . . . . . . . . 25
(d) House sewer, new or renewal . . . . 0 .50
( e) Water service, new or renewal . . . .50
(f) New clean out openings in existing
plumbing system . . . . .25
(g) Any other fixture recuiring a eater
and waste connection . . . . . , , .25
(h) Future fixture openings . . .50
(i) CoolinF_s units using; city water o .50
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All inspection fees shall be `paid at the office of the City
Clerk wlio shall issue - receipt therefor.
All work being done under one contract shall be included in
one hermit as a basis for the inspection charge.
Section 21. TESTING PLUABING SYSTME. All the nioing of a
g raterplumbin system shall be tested with rater or air in the presence
of the Plumbing Inspector before final acceptance. After the
plumbing fixtures have been set and their traps filled i�rith water
the entire drainage system shall be submitted to a. final insnectior.
The Plumbing; Inspector may require the removal of any cleanouts to
ascertain if the pressure has reached all parts of the system. If
inspection or test shows defects such defective work or materials
shall be replaced <<rithin three (3) days and the test repeated.
The Plumbing Inspector may require the air or smoke test to
be used in testing the sanitary condition of the drainage or plumb-
ing system of any building where there is reason to believe that
the plumbing; system is defective. In buildin-s condemned by the
Board of Health or City Manager because of unsanitary conditions
of the plumbing; system, the alterations in such systems shall not
be considered as repairs, but as new plumbing.
Conductor nines and their roof connections within the walls
of buildings or conductor branches on the outside system where
such branches connect with the house drain or are less than three
(3) feet from the wall of the building shall be tested by the
water or air test. Conductor branches on the outside system shall
be inspected and approved.
For a garage or accessory building the same tests and in-
spection of the plumbing and drainage system thereof shall be made
as in the case of an ordinary dwelling.
Section 22. LIETHODS OF TESTING. Water Test - The eater test
may be applied to the drainage system in its entirety or in
sections. If applied to the entire system, all openings in the
piping shall be tightly closed, except the highest opening above
the roof and the system filled with water to the Doint of overflow
above the roof.
If the system is tested in sections each opening shall be
tightly plugged, except the highest opening; of the section under
test, and each section shall be filled with water but no section
shall be tested Tiith less than a 10-foot head of water or a 5-0oun
pressure of air. In testirf,,- successive sections at least the
upper ten (10) feet of the next preceding section shall be retested,
so that no ,point or pipe in the building shall have been submitted
to a test of less than- a 10-foot head of water or a 5-pound
pressure of air.
Under any test the i;r shall or air pressure s all remain con-
stant for not less than 15 minutes without any further addition of
ater or air.
Section 23. HOUSE SEWER TEST AND INSPECTION. The house sewer
shall be made tight and shah be inspected and tested before cover-
ing. The test tee shall be placed at or near the main sewer and
the test applied as specified in Section 22.
Section 2,1, AUTHORITY OF PLMIBING INSPECTOR. The Plumbing
Inspector shall have authority to enforce the provisions relat-
ing to the installation and testing of all plumbing installed
der this ordinance.
Section 25. PLTJ11BING IN MOVED BUILDINGS. When a building is
oved from one location to another, no additional r?ork or connecti
ai
hall be made unless the plumb nE- in said building has been recon-
structed to comply with this�'O d tested as provided in Section
2. Nor shall any additional plumbing work be installed in a build
_g_
ing where there is defective or improperly installed plumbing
until. such defects have been repaired, renovated, replaced or
removed.
Section 26. T:H11POR.4RY TOILET FACILITIES. When temporary
toilet facilities are renuired to be provided for the use of work-
men durin7 the construction of any building, these toilet facili-
ties shall be maintained in a sanitary condition.
Section 27. EXCAVATIONS WITHIN STREET LI11ITS. It shall be
unlawful for any person, firm or corporation doing plumbing work
to begin any excavation or pavement out or to place any obstructions
within the limits of any street, avenue, alley- or public place
within the corp orate limits of the City of Agnes, Iowa, without
first having; made anplica.tion for, and received, a permit therefor.
Section 28. RESPONSIBILITY OF I4ASTE•R PLU11BER FOR PROTECTING
THE PUBLIC. The blaster Plumber shall without further or other
order, provide, erect, and maintain at all times during the pro-
gress and suspension of his work and until final completion there-
of, and removal of all obstructions occasioned by his work within
the street limits, suitable and reouisite barriers, signs, or
other adecuate protection and shall maintain such red lights,
danger sip•nals or watchmen as may be necessary, or as may be order-
ed by the City I.lanager, or !-Is authorized representative, to in-
sure the safety of the public and shall assume full responsibility
for all damages sustained by any person or -, roperty due to carry-
in on of his work.
Section 29. BACKFILLING HOUSE SERVICE DITCHES 71ITHINT STREET
LII: ITS. The City -ill backfill all house service ditches and
excavations within the limits of all streets, avenues, and public
Places 7,Tithin the corporate limits of the City.
The Faster Plumber shall notify the City Manager's office
when such ditches, or excavations, are ready for backfilling and
the City will fill the same as promptly as possible thereafter. The
responsibility of the r.laster Plumber for the maintenance of red
lights, barricades, or other protection shall cease when the City
begins the !Bork of backfillin7 the ditch or not later than 48
hours frorl the time of the receipt of written notification by the
City Mana{7er that the ditch is ready for backfilling.
The City will charge the 11aster Plumber the sizi of twenty-
five cents (25,1) per lineal foot of ditch for such backfilling
ork.
ARTICLE III
G L'qE_AL R,EGTJL_1TI01TS ON PLUI.2BI1 G INSTALLATION
Section 30. I,NST_4LLATI I OF PIPING. Horizontal drainage
iping shall be run in. practical alignment and shall be supnorted
nt intervals not exceeding eight (8) feet. The Minimum slopes shah
e as follows: Not less than 1/4 inch fall per foot for l to 2
nch diameters, inclusive; not less than. 1/8 inch fall per foot for
2 to 4 inch diameters, inclusive; not less than 1/16 inch fall per
oot for 5 to 8 inch diameters, inclusive; and a •slope that will
aintain a velocity of at least 2.0 feet per second in a pipe of 10
nch diameter or larger. Stacks shall be supported at their bases
nd shall be rigidly secured. Piping shall be installed without
ndue stresses or strains, and provision made for expansion, con-
raction, and structural settlement. No structural member shall be
eakened or impaired beyond a safe limit by cutting, notching or
thein,,ise, unless "rovision is made for carryinrn the structural Load.
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Section 31. CHANGES Iiv DIRECTION. Changes in direction in
drainage piping shall be made by the appropriate use of cast-iron
450 ryes,- half tRryes, ldng-sweep cauarter bends, sixth., eighth, or
sixteenth bends, or by combinations of these fittings, or by use
of eouivalent fittings or their combinations; except that sanitary
tees may be used in vertical sections of drains or stacks, and
short ,quarter bends may be used in drainage lines where the change
in direction of flow is from the horizontal to the vertical. Tees
and crosses may be used in vent pipes and in water-distributing
pipes. No change in direction greater than 900 in a sinr,•le turn
shall be made in drainage pipes.
Section 32. PROHIBITED FITTINGS. No double hub, double T,
or double sanitary T branch, twin ell, cast iron closet bend, St.
ell, or St. 450 ells shall be used on soil or waste lines. The
drilling and burning of holes in, or the tapping of house drains,
soil, waste or vent pines, the use of saddle hubs and bands and
the welding or brazing of marts into nines to make fittings are
prohibited. Sanitary crosses having at least truce the diameter
of the branch onening may be used in a vertical position.
Section 33. DEAD ENDS. In the installation of any drainage
system dead ends shall be avoided.
Section 34. PROTECTION OF :MATERIAL. All pipes passing under
or through walls shall be protected from breakage. Pipes shall
not be run under or through chimneys. All pipes -gassing through
or under cinder, concrete or ogler corrosive material shall be
Protected against external corrosion.
Section 35. PROTECTION OF 17ATER TANK ICE TAi4K AND SPECIAL
EQUIPiEIdT. Exposed drainage pipes shall not pass directly over
water supply tanks, reservoirs, nrepared food'- receptacles, operat-
ing, tables, surgical equipment and special areas easily contaminat
ed unless either the area or drainage line is amply protected by
means of covers, guards or shields designed to receive or divert
possible leakage.
Section 36. WORK114.IISHIP. Workmanship shall be of such
character as to fully secure the results Dr' escribed in all of the
sections of this onda and shall be done in a neat and workmanlike
manner. ordinance
Section 37. INSTALLATION OF PLU11BING. Al)_ plumbing installed
shall co---Ply with the reouirements of this ordinance.
ARTICLE IV
_9UALITY AND 11IEIGHTS OF 1,L4TERIALS
Section 38. MATERI_ALS, QUALITY OF. All materials used in
any drainage or nluznbingr system, or �_ art thereof, shall be free
from defects and shall meet accented standardsy as specified in thi
ordinance.
Section 39. LABEL, CAST OR STXTPED. Each length of pipe,
fitting, trap, and fixture or device used in a plumbing drainage
system shall be indelibly stamped or marked -rith the weight,
Quality and the maker' s mark or name. Septic tanks shall be
arked with effective capacity and gauge of metal.
Section 40. VITRIFIED CLAY PIPE AND CONCRETE PIPE. All
vitrified clay pipe shall conform to the A. S. T.?.I. °standard Speci-
fications for Clay Sewer Pine" (Serial designation, C 13-40) . All
concrete pine shall conform- to the A. S. T.M. "Standard Specifica-
tions for Concrete Pine" (Serial designation C 14-40) .
Section 41. CAST-IRON PIPE. (a) Cuality -- All cast iron
pipe and fittings shall conform to the A. S.A. "American Standard
or Cast Iron Soil Pipe and Fittings" (Serial designation, A 40.1-
935) .
-11y
(b) Coating -- All cast iron pipe and fittings shall be
coated with asphaltum or coal tar Pitch.
Section 42. WROUGHT-IRON PIPE. All wrought-iron nine shall
conform to the A. S. T.M. "Standard Specifications for Melded
Wrought Iron Pipe" (Serial designati-on, A 72-39) and shall be
galvanized.
Section 43. L1ILD-STEEL PIPE. All steel pipe shall conform
to the A. S. T.11. "Standard Specifications for gelded and Seamless
Steel Pipe" (Serial designation, A 53-36) and shall be galvanized.
Section 44. BRASS AND COPPER PIPE. Brass and copper nine
shall conform, respectively, to the standard specifications of the
A. S. T.11. for "Brass Pine, Standard Sizes, " and for "Copper Pipe,
Standard Sizes" (Serial numbers B 43-39 and B 42-39 respectively).
Section 45. COPPER TUBING. Copper tubin,., for use with
flared or soldere#d fittings shall conform to Federal Specifica-
tion ITI-T-799, Tubing; Copper, Seamless (for use 1,xrith soldered
or flared fittings).,. or pith A. S. T.M. "Standard Specifications for
CoDDer 17ater Tube" (Seria.l designation B 88-39) .
Section 46. LEAD PIPE DIJAI'IETER, WEIGHTS. All lead nine sha 1
be of best cuality of drawn pipe, of not less weight per linear
foot than sriown below.
(a) Lead soil, waste, vent, or flush nines (light) :
Interrigl__Diameter Internal Diameter
'Teights 71ei�7hts
Per Foot Per Foot
Inches Lbs. Ozs. Inches Lbs. Ozs.
1 - - - - - 2 8 2 5
1 - - - - - 3 - 3 - - - -
12 - - - - - 3
4 - 4 - - - - 8
(b) Lead water-supply pine under ground (extra strong) :
Internal Diameter Internal Diameter
17eights Weights
Per Foot Per Foot
Inched Lbs. Oz Inches Lbs. Ozs.
1/2 - - - - - - 2 8 3/4 - - - - 3 8
5/8 - - - - - - 3 - 1 - - - - 4 12
(c) Lead water-supply pipe under ground (double extra strong) :
Internal Diameter Internal Diameter
'Ile i ghts V1eights
Per Foot Per Foot
Inches Per
0"� Inches Lbs. Ozs.
11/4 - - - - - 6 12 13/4 _ 9 8
11/2 - - - - - 9 - 2 - 10 14
(d) All lead bends and traps shall be of a quality 1--nown to
the trade as "--xtra heavy. "
Section 47. SHEET LEAD. Sheet lead shall weigh not less
than four sounds ner square foot.
-12-
Section 48. SHEET COPPER OR BRASS. Sheet copper or brass
shall be not lighter than No. 18 B and S. gauge, except that for
local and interior ventilating ripe it shall not be lighter than
No. 26 B and S. gauge.
Section 49. GALVANIZED SHEET IRON. Galvanized sheet iron used
for local vents shall be not lighter than the following B. and S.
gauge:
No. 26 for 2 to 12 inch nine
No. 24 for 13 to 20 inch pipe
No. 22 for 21 to 26 inch pine
Section 50. FITTINGS. (a) Plain screwed fittings shall be
f cast iron, malleable iron, brass or copper of standard weight
and dimensions. (b) Fittings for copper tubing, shell conform to
American Standards Association Standard for Soldered Joint Fittings.
(c) Drainage fittings shall be of cast iron, malleable iron, brass
r copper rith smooth interior waterway, with threads tapped out
f solid metal. (d) All cast iron screw fittings used for water-
upply distribution shall be galvanized. (e) All malleable iron
ittings shall be galvanized.
Section 51. CALKING FERRULES. Drive ferrules and combination
Lead and iron ferrules are prohibited. Brass calking ferrules steal
e of the best cuality red cast brass, with weights and dimensions
n accordance with the following table:
Actual
Inside
Pipe Size (Inches) Diameter Length Weight
Inches Inches Lbs. Ozs.
2 - - - - - 2" .91 1 -
3 - - - - - 34 4, 1 12
4 - - - - - 44 4g 2 8
Section 52. SOLDERING NIPPLES AND BUSHINGS. (a) Soldering
nipnles shall be of brass vine of iron-pipe size, or of heavy cast
red. brass not less than the followinc; reights:
Diameter Weights Diameter Weights
Inches Ozs. Inches Lbs. Ozs.
1 - - - - - - - 6 21 - - - - - 1 6
12 - - - - - - - 8 3 - - - - - 2 0
2� - - - - - - - 14 4 - - - - - 3 8
(b) Soldering bushings shall be of brass pipe of iron-nine
size, or of heavy, cast red brass.
Section 53. FLOOR FLANGES FOR WATER-CLOSETS. Floor flanges
or water-closets shall not be less than three-sixteenths of an
finch thick, and of brass, weighing* not less than one pound. Cast-
ron flanges are prohibited.
ARTICLE V
JOINTS AND CONNECTIONS
Section 54. WATER AND AIR TIGHT JOINTS. All joints and con-
ections mentioned under this article shall be made permanently air
nd water tight.
Section 55. VITRIFIED PIPE. All joints in vitrified clay or
oncrete pines or between vitrified clay or concrete pipes and
etal pines shall be made of Portland cement and clean sand, asohal
r other apnroved material finished in a workmanlike manner. The
-13-
Interior of the nine shall be wined clean and smooth. Joints
shall be made in the foliowing manner: A closely tw= isted hemp or
oakum gasket of suitable diameter, in no case less than 3/4 inch,
and in one piece of sufficient length to pass around the nine and
lan at the top, shall be solidly rammed into the annular spaces
between the pipes with a s_sita.ble calkimZ tool. When cement joint
are used, the gasket shall hE first be saturated with neat cement
grout. The remainder of the space shall then be completely filled
with the jointing materials.
Section 56. CALKED JOINTS. All calked joints shall be
firmly packed with oakum or hemp, and shall be secured only with
pure molten lead, not less titan one (1) inch deep, well calked and
no paint, varnish, or putty will be permitted until after the
joint is tested.
Section 57. SCREW JOINTS. All screw joints shall be America
standard screw joints, and all burrs or cuttings shall be removed.
Lubricant or pipe dope shall be used on the male thread only.
Section 58. CAST IRON PIPE JOITS. Cast iron pipe joints
shall be calked and made in the approved manner as specified in
Section 56.
Section 59. COPPER TUBING JOINTS. Copper tubing joints
shall be made in accordance with annroved practice. Solder
fittings shall be of such size that joints will be completely
filled with solder.
Section 60. WROUGHT IRON, STEM, OR BRASS TO CAST IRON. The
joints may be either screwed or calked joints made in the approved
manner as specified in Sections 56 or 57. Calked joints between
1i and 11 inch pipe to cast iron pipe shall be made with calking
spigots.
Section 61. LEAD PIPE. All lead pipe shall be adequately
supported throughout its length. Joints in lead pipe or between
lead pipe and brass or copner pipe, ferrules, soldering nipples,
bushings, or traps, in all cases on the sewer side of the trap and
in concealed joints on the inlet side of the trap, shall be full-
wiped joints, rith an exposed surface of the solder to each side o
the joint of not less than three-quarters of an inch and a minimum
thickness at the thickest part of the joint of not less than
three-eights of an inch. No trimming, or filing of joints after
a=i:�inm shall be done.
Section 62. LEAD TO CAST IRON, STEEL G�: WROUGHT IRON. The
joints shall be made by means of a. calking; ferrule or soldering
nipple.
Section 63. SLIP JOINTS. Slip joints or ground joint unions
will be permitted only in trap seals or on the inlet side of the
trap.
Section 64. ROOF JOINTS. The joint at the roof shall be
made water-tight by use of lead or copper roof flashing s.
Section 65. CLOSET, PEDEST_41 URINAL AND TRAP STANDARD SLOP
SINK, FLOOR CONNECTIONS. A brass floor connection shall be wined
or soldered to lead pipe and the floor connection bolted to an
earthenware trap flange. A metal to earthenware, a metal to metal
union, or a lead or asbestos gasket or washer shall be used to
make a tight joint.
Section 66. INCREASERS AND REDUCERS. Where different sizes
of pines or pines and fittings are to be connected, proper size
increasers or reducers hitched at an angle of 450 between the two
sizes shall be used, except where prohibited by Section 67.
-14-
Section 67. PROHIBITED JOINTS AND CONNECTIOi4S. Any fitting
or connection which ha.s an enlargement chamber, or recess with a
led ~e shoulder or reduction of the nine area in the direction of
the flowon the outlet or drain side of any trap is Prohibited.
Section 68. SUPPORT BOLTS. Connections of gall handers,
pipe sunnorts, or fixture settings with the masonry, stone or
concrete backing shall be made with exnansion bolts without the
use of wooden plugs.
ARTICLE VT_
TRAPS AND CLEANOUTS
Section 69. TRAPS, KIND. Every trap, except grease inter-
centors, shall be self-cleaning. Trans for bathtubs, lavatories,
sinks and other similar fixtures shall be of lead, brass, cast
iron or of malleable iron galvanized or porcelain enameled inside.
Galvanized or porcelain enameled trans shall be extra heavy, and
shall Have a full bore smooth interior waterway arith threads
tapped out of solid metal . Brass tubing and brass tubing traps
shall be seamless drawn and not less than 17 gauge.
Section 70. TRAPS PROHIBITED. No form of trap v,Thich depends
for its seal upon the action of movable Parts or concealed in-
terior Partitions shall be used for fixtures. Runninq trams on
main house drains are prohibited. No fixture shall_ be double
tra�Ped.
Section 71. TRAPS, WHERE REQUIRED. Each fixture shall be
separately trapped by awater-seal trap placed as near to the
fixture as nossi',Dle, extent that a set of not more than three
laundry trays or lavatories or a set of two laundry trays and one
sink, cast or made as one fixture, may connect t=rith a sinfrle trap,
provided that no horizontal arm shall exceed three (3) feet in
developed length from the trap to fixture.
Section 72. WATER SEAL. Each fixture trap shall have a
water seal of not less than 2 inches and not more than 6 inches.
Section 73, TRAP CLEANOUTS. Each trap, except those in com-
bination r,ith fixtures in width the tram seal is ?Mainly visible
and accessible, shall be Provided with an accessible brass clean-
out plug of ample size, protected by the water seal. Drawn brass
tube trans which have a union connection protected by the trap
seal may be used.
Section 74. TRAP LEVELS AND PROTECTION. All trans shall be
set true with respect to their water seals and Protected from
frost and evaporation.
Section 75. PIPE CLEANOUTS. The bodies of cleanout ferrules
shall be made of standard nine sizes, conform in thickness to
that reruired for nine and fittings of the same metal, and extend
not less than one-quarter inch above the hub. The cleanout or
.)lug shall be of heavy red brass, standard iron Pine thread and be
?provided with raised nut or recessed socket, of an approved patter ,
for removal.
Section 76. PIPE CLEANOUTS-WHERE REQUIRED. Cleanouts shall
be Provided trThere necessary and a cleanout easily accessible shall
be provided at the foot of each vertical waste or soil stack at
least 2-?7- feet above floor level. Cleanouts shall be Placed in the
house sealer at intervals not exceeding 75 feet. Branch lines to
fixtures shall have accessible cleanouts. There shall be at least
two cleanouts in the house drain -- one at or near the base of the
stack and the other a Y branch broumht above the floor level insid
the wall near the connection between the house drain and house
sewer except where the base of the stack is less than 5 feet dista t
from the point where the sewer enters the building, the cleanout
at the base of the stac'_, will be sufficient. Cleanouts shall be o
-15-
the same nominal size as the Dines up to four inches and not less
than four inches for larger pipes. The distance between clean-
outs in horizontal soil lines shall not exceed 50 feet.
Section 77. MANHOLES. All underground trans and cleanouts
of a building, except There cleanouts are flush with the floor,
and all exterior underground traps shall be accessible by man-
holes with nroner covers.
Section 78. GREASE INTERCEPTORS. When a grease interceptor
is installed, it shall be 'placed as near as possible to the fixture
from which it receives the discharge and must be of approved type.
Grease interceptors cooled by the house viater supply shall be nro-
h.ibited except when an approved air gap as specified in Section
102 is provided on the water supply. The capacity of grease traps
installed shall be not less than those specified in the following
table.
CAPACITY OF GREASE T RAP S
umber of Grease Floe. `:later e Capacity Waste e nprox.
deals ner Capacity Per Hour Water Retained Inlet & Weight
Day Pounds Gallons Gallons Outlet Pounds
55 15 300 31 1 85
75 24 420 41 1L 100
110 36 740 6 2 110
185 50 935 8 2 125
260 65 1130 10 2 140
160 55 1020 10 2 210
250 75 1200 13 3 240
385 110 1700 18 3 270
525 152 2300 23 3 300
Section 79. SAND INTERCEPTORS, GARAGE SUMPS. Sand intercept-
ors, garage sumps and similar devices, when installed, shall be
readily accessible for cleaning and be of an approved design.
Section 80. BASEI,3E2,TT FLOOR DRAINS. A cellar or basement
floor drain shall connect into a trap so constructed that it can
be readily cleaned and of a size to serve efficiently the purpose
for which it is intended. The drain inlet shall be so located tha
it is at all times in full view. When subject to back flow or bac
pressure, such drains shall be eouipped with adequate backwater
valves. Connections will be nermitted only where they can be made
throup;h a. tram in which a permanent ipTa.ter seal can be maintained.
Basement floor drains shall not be less than three inches in size
and shall connect to the sewer at least five feet from the base of j
the stack unless vented. Clean out plugs shall be provided for
branch lines to floor drains if more than 12 feet in length.
Section 81. BACKWATER VALVES. Backwater valves shall have
all bearing parts or ball of non-corrodible metal and so con-
structed as to insure a mechanical seal The area of the valve
seat shall be eoual to the cross section area of the pipe con-
nection : Backwater valve shall be of open seat type rith acces-
sible hand hole cleanout to service mechanical working harts.
Provide suitable installation pit with cover, or hand operated
bell and spigot gate valve with curb box.
-16-
ARTICLE VII
STATER SUPPLY AND DISTRIBUTION
Section 82. QUALITY OF WATER. The ouality of water supply
shall meet accepted standards of purity. Develonment of private
water supplies shall be in accordance with the recommendations of
the State Department of Health.
Section 83. PROTECTION OF WATER SUPPLY. The water supply
shall be distributed through a piping system not directly con—
nected to a nonnotable sunnly, entirely independent of any piping
system conveying another water supply.
Water supply pipe connections to any fixture, annliance,
device, or system of piping shall be made in a manner so as to
prevent the return of any water, liquid, waste or foreign sub-
stance into the eater supply system by pressure, Erravity or
siphonage, unless such appliance or device is approved or used for
treating; or purifying the dater in such manner so as to maintain
its quality and potability.
Every water closet or urinal shall be flushed by means of
an approved back-siphonage proof tank or flushing device of at
least 4 gallons flushing capacity for seater closets and at least
2 gallons for urinals, and shall be adjusted to prevent the waste
of water. The lush pine for water closet flush tanks shall be
not less than 1 inches' in diameter.
After January 1, 1942, an approved type flush tank shall
have a ball cock constructed and installed in accordance with
the folloiF,ring conditions :
(a) When the tank is filled to its overflow level and the
supply valve is fully oven, there will be no backflow from the
tan�7 into the ball-cock valve or supply _pine under a vacuum of
15 inches of mercury in the supply pipe.
(b) Ball cock, shall be elevated so that water cannot flow
by gravity from the tank into the ball cock valve or supply pipe
when the tank is filled to one (1) inch above the overflow level
with the valve open and the supply pipe open to the atmosphere.
(c) In case the supply discharges below the overflow level
through a. hush tube or other enclosed or partially enclosed pass-
age, the ball-cock assembly shall be eouipped with an approved
backflow nreventer, elevated so that its critical level is at
least one (1) inch above the overflow level.
(d) In case the sulnDly discharges into the tank a'Dove the
overflow level through one or snore supply openirz the ball-cock
assembly shall be elevated so that there is a clear air gap of at
least one (1) inch bettTaeen the lowest point of any supply opening
and the overflow level of the tart-_.
(e) Ball cock for loth tank shall be provided with a refill
tube and shall fill the fixture trap to its overflow weir. Float
shall be of spun copper not less than 0.021 inch thick, or of non-
,absorbent molded composition, or of glass, and shall have a brass
stem connected to float and cock by setscrews or screw threads.
Cock shall. be constructed so it can be taken apart readily for
repair. Pins or thumbscrews formin.-I bearings for levers shall be
not less than 3/16 inch in diameter. Support for ball cock and
lever fulcrum on high tan1: shall be secured with through bolts
and nuts to brackets bolted to or cast on the tank; lead washers
shall be -)rovided between the tank lugs and supports. Pipe con-
nection to ball cock shall be 3/8 inch.
(f) Each ball co c'L shall bear the manufacturer' s name and
sufficient information to identify it from ball cocks of any
other model or construction made by the manufacturer.
-17�
No water closet or urinal bowl shall be sup,-)lied directly
from a. water supply system through a flushometer or other valve
Unless such valve is nrovided with an approved type backflow nre-
venter (vacuum breaker of back-siplhonage nreventer) .
Section 84. BACKFLOW PR'EVENTERS. Backflow preventers (vacu
breakers or back-siphonage preventers) shall be of the moving part '
and air vent type which shell be of such size and nroportions as to
allow an ample flow of water to the fixture. Backflow preventers
shall be a complete functioninf,; unit, installed separately or con-
taine& •wholly within the flush valve body, between the flush valve
mechanism and the fixture. 'pen water is not flowinL from the
flush valve, the moving part or parts shall normally rest in a
position that effectively closes the water passage through it to a
definite extent and in a position that leaves the vent fully open.
When water starts flowing from the flush valve, the moving part or
parts shall be actuated by the flowing water and moved into a nosilln
that opens the water passage and closes the air vent tightly; and
when flow of water stops the moving part or parts shall return auto-
matically to the normal position of rest. The cycle of motion shall
be completed in full with each completed operation of the flush
valve, and 7ilthout the aid of springs or other elastic or flexible
part. The operation shall be positive and dependable. The device
shall nrevent a reduction of nressure in the flush nine greater
than one (1) inch of water when the outlet end of the- flush pine
is closed or submerged in water and a vacuum of 15 inches of
mercury is a_Dplied on the supply side. The critical level shall ir no
case be below the outlet connection, and when the critical level
is above that noint it shall be shown by a horizontal line not les
than 1/4 inch lone; accompanied by annropriate symbols C-L or
clearly east or stamped on the body of the device. When not
L'
indicated by the prescribed mark, the critical level shall_ be con-
sidered as being at the level of the outlet end of the device. Th
critical level of backflow preventers when installed shall be
located at least 4 inches above the flood level of the fixture
except that inhere existing supplies,which do not permit an elevati n
of 4 inches, must be accommodated, the elevation of the critical
level may be placed not less than 2 inches above the flood level
of the fixture. Each backflow preventer shall be clearly marked
with the manufacturer' s name and sufficient additional information
to identify it from any other model or construction th^ t is made
or has been made by him.
Section 85. AUTOLUTIC FLOO11 DaA.IN PRILIERS OR TRAP SEAL VALV+ S.
All automatic floor drain primers or trap seal valves shall be
prohibited.
Section 86. WASTE WATER DISPOSAL. Adequate provision for
waste water disposal, either by public sewer or private sewage dis-
posal works designed and constructed as recommended by the Iowa
State Department of Health, shall be provided for all building-s
with connections to the public water supply or Private water supply
under pressure.
Section 87. SIZE OF WATER SUPPLY PIPES. All Plumbing fix-
tures shall be _provided with a sufficient supply of water to main-
tain trap seals and to keep them in a sanitary condition.
The water service pipe in any building shall be of sufficien
size to Permit a continuous ample flow of water to the building
under the average daily minimum service nressure in t'ie street main.
The minimum size of water service pipe from the main (or cur
where the stub has already been installed) to and including the
third branch opening in the building, shall be 3/4 inch, or 1 inch
if flush valves are installed, and to fixture sulDplies as follows:
-18-
Inch Inch
Sill cocks . . . . . . . . 1T Lavatories 3 8
Hot wp,ter . . . 1/2 Bathtubs 1/2
Laundry trays . 1/2 Water-closet tanks. 3/8
Sinks . . . . . . 1/2 Urinal tanks . . . . . . . 3/8
Shower bath . . . . ,1/2 Flush valves . . . . . . . 3/4
Section 88. IVATER SUPPLY CONTROL. A main shutoff on the
water sunnly line shall be provided near the curb. Accessible shu -
offs shall be provided on the main supply line gust inside the
foundation wall, on the house side of the meter ahead of any con-
nection, on each riser line in buildings over three floors, and
for each sill cock.
Section 89. ;"WATER SUPPLY PIPE FRO:'.: MAIN TO 11ETER. All
water supply pipes from the water main to the consumer's meter
shall be of copper, lead, or cast iron.
Section 90. 17ATER-SUPPLY PIPES, VALVES AND FITTINGS. All
water-supply pipes for a plumbing system shall be of lead, copper,
galvanized wrought-iron or steel, brass, or cast iron, with brass,
galvanized cast iron, galvanized malleable iron or wrought copper
fittir�. When cast iron fittings are used on cast iron water main ,
they shall be of the same material as the water main. No nine or
fittings that have been used for other purposes shall be used for
distributing, water. All pines, valves and fittings shall be de-
signed for the maximum workin pressure of the wafer supply to which
they are connected.
Section 91. WATER SUPPLY, PROTECTIC)N. All concealed water
pipes and storage tanks, subject to freezing temperatures, shall
be protected against freezing. All water nines shall be installed
so that they may be easily drained and are to be hung or laid with
out trapping if possible. If trapping; is unavoidable, tees and
drainage nlugs shall be installed.
Section 92. HUT WATER STORAGE TA' iiS AND RELIEF VALVES. All
of water storage tanks and range boilers stall be of the type
mown as "extra heavy" and designed for a working pressure of not
less than 150 pounds --)er square inch. On all range boilers and hot
water stora.Fe tanks, and/or wherever any check valve is installed i
the cold-water supply pipe between the street main or private water
supply and any existing or replaced hot-water tank there shall be
installed a suitable heat or temperature relief valve set and sealed
to actuate at a temperature of not more than 2120 F. and of a type,
construction, and size approved by the State Department of Health.
The relief valve shall be placed within 12 inches of the ton of the
tank or not to exceed 6 inches above the taiui developed length and
hall not be placed on a line by which the storage tank is fed from
ny heater, and shall be piped to discharge over a suitable fixture here a fixture is not available the discharge shall be piped to
the floor. There shall be a drain coc'r on the bottom of every hot
water tank. No valve shall be permitted in any flow pipe between
tank and heater. An approved pressure relief valve set to actuate
t a pressure not exceeding 150 pounds, except industrial installa-
tions in which case the valve shall be set to actuate at a pressure
of exceeding 50 pounds above the average static pressure in the
an::, shall also be installed in or near the storage tank and no
valve or stop shall be installed betsxreen the tanl;� and the pressure
relief valve.
Whenever a hot water storage tank or range boiler or heater
or such storage tan?-, or range boiler is replaced, the above men-
ioned heat and pressure relief valves and safety device shall be
installed.
Section 93. PILOT SAFETY DEVICES. All automatic or semi-
utomatic water heaters using- a, burner heving a pilot flame or low
lane burner shall be provided i�,ith a suitable safety device which
ill orevent t e escape of fuel in event the pilot flame is ex-
tinguished or fa _ls.
-19-
r
Section 94. HYDRANTS. Yard hydrants to furnish water for
human consumption are prohibited.
ARTICLE V I I.T
PLMI,IBING FIXTURES
Section 95. 11AT ,RIALS. All plumbing fixtures shall be made
of smooth, non-absorbent material, and free from concealed fouling
surfaces. Receptacles used as water-closets, urinals, or other-
wise for the disposal of human excreta, shall be vitrified earthen
ware, or cast iron porcelain enameled on the inside. (Also see
Sec. 99)
Section 96. DRINKI "G FOTNTA±NS. Drinking fountains shall
comply with the following requirements
(a) The fountain shall be constructed of impervious
m,,.teria.l, such as vitreous china, porcelain, enameled cast iron
other metals, or stoneware.
(b) The ,jet of the fountain shall issue from a nozzle
of non-oxidizing impervious material set at an angle from the
vertical, and at an elevation to provide an air gan as specified
in the Table in Section 102.
(c) The end of the nozzle shall be protected by non-
oxidizing guards to prevent the mouth or nose of ne-sons using the
fountain from comin ; into contact with the nozzle.
(d) The inclined ,jet of water issuin- from the nozzle
shall not touch the guard, thereby causing splattering.
(e) The bov.71 of the fountain shall be so designed and
nronortioned as to be free frorz corners which would be difficult
to clean or nhich would collect dirt.
(f) The bowl shall be so nronortioned as to prevent un-
necessary splashing, at a point where the jet falls into the bowl.
Self-cleansini anti-splash rims are recommended.
(1 ) The water supply pipe shall be provided with an ad-
justable valve fitted 7ith -, loose key or an automatic valve ner-
mitting the regulation of the rate of floc, of water to the fountai
so that the valve manipulated by the users of the fountain will
merely turn the water on or off.
(h) The waste onening and pipe shall be of sufficient
size to carry off the !pater promptly. The opening stall be pro-
vided with a strainer.
Section 97. OBSOLETE FIXTURES. Fixed wooden wash trays or
sinks shall not be installed in any building. No copper lined wooden
bathtub shall be installed, and an old fixture of this class taken
out small not be reconnected. Pan and valve plunger, offset
washout and other water-closets having invisible seals or unventi-
lated spaces or walls not thoroughly washed at each flush shall no
be used. Long hopper closets or similar appliances shall not
hereafter be installed.
Section 98. FIXTURES - HOW INSTALLED. All nlumbinr fixture
shall be installed in a manner to afford access for cleaning.
Where practical, all pines from fixtures shall be run to the wall,
and no lead trap or pipe shall extend nearer to the floor than
12 inches unless protected by a casing.
Section 99. VIATER-CLOSET BOWLS. !Vater-closet bowls and
trans shall be made in one niece and of such form as to hold
sufficient ouantity of water, when filled to the trap overflow,
to prevent fouling^ of surfaces, and shall be provided with integral
flushin rims constructed so as to flush the entire interior of
the bowl.
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Section 100. FROST-PROOF CLOSETS. Frost nroof closets are
Irohibited.
Section 101. FIXTURES PROHIBITED. Fixtures with submerged
water supply inlets and any fixture or appliance which does not
ave an adeouate co:npl;ete air break or gap between the water supply
inlet and the highest water level in the fixture are hereby speci-
fically prohibited, except flushometer toilets and urinals and
other fixtures where the use (not the design) of the fixture
necessitates a submerged inlet, in which case an approved back
flow preventer (vacuum breaker or back-siphonage preventer) rust
e nronerly installed so as to safeguard the crater supply.
Section 102. AIR GAPS. The minimum required air break or
an when rot affected by near walls shall be twice the diameter of
the effective onen_ng and when affected bar near walls shall be at
east three times the diameter of the effective opening, but in no
case shall the air break or gap be less than specified in the
ollowing table :
111111114UM AIR GAPS FOR GENERALLY USED
PLU11BING FIXTURES
Minimum Air Gans
When Not Affect- When Affect-
Fixtures ed by Near ,'Pall ed by Near Wall
( see Notes 1 & (See Notes 1
(See Note 3) 2 &
Lavatories with effective open-
ings not greater than 1/2 inch
diameter . . . . . . . . . . . 1.0 1.50
Sinks, laundry trays, and goose-
neck bath faucets with effective
openings not r,-reater than 3/4
inch diameter . . . . . . . . 1. 5 2.25
Drinking fountain nozzles . . . . 0.75 ---
Effective openings greater than
1 inch diameter . . . (a) (b)
All dimensions are riven in inches.
N2 times effective opening.
3 times effective opening.
Note 1 -- Spout near wall -- If any vertical wall extending to
or above the horizontal plane of the snout opening is closer to the
nearest inside wail of the s:�out opening than four times the diameter
of the effective opening, the air gap shall be as specified above
for spout near wall, column 3.
Note 2 -- Spout set at an angle -- Should tlhe plane of the en
of the spout be at an angle to the surface of the water, the mean
gap is to be taken as the basis for measurement, except for drink-
ing fountain nozzles, in which case the gap to the lowest point of
the nozzle openir_ shall be taken.
84. Note 3 -- For ball cocks and flush valves see sections 33 and
_21-
Tan'_�s or vats with inlets below the flood. level rim shall be
fitted with an overflow connection and piping; of sufficient capa-
city to keen the water level from rising more than half of the
minimum renuired air gan distance, as in above table, above the
top of the overflow when water is entering the tank at the maximum
rate of flow. In such case the minimum air gap shall be measured
Iron the lowest point of zany supply outlet to the ton of the over-
flow opening and shall be increased 50 ner cent above the minimum
air gap specified in above table, to provide a similar factor of
safety. There shall be a safe air gap'or break. in the overflow
piping as close to the tan': as nossible to allow overflow water a
free discharge to atmosphere even though the waste mine line
is clogged. -
Section 103. FLOOR DRAIivS AND SiOWE.R DRAINS. A floor drain
or a shower drain shall be considered a fixture and provided with
a strainer. Shower or other floor drains located above the
ground floor level small be provided t-!ith seepage drains and
approved pans or flashings to nrevent leeka<;e of wastes to lower
floors.
Section 104. FIXTURE STRAINERS. All floor drains, shower
and similar drains shall be provided with fixed strong metallic
strainers with outlet areas not less than that of the interiorof
the trap outlet.
Section 105. FIXTURE OVERFLOtVI. The overflow pipe from a
fixture shall be connected on the house or inlet side of the
trap and be so arranged that it may be cleaned.
ARTICLE AMIX
VE T TILATION OF ROOMS AE;D FTXT tJRE5
Section 106. LOCATION OF FIXTURES. No trapped plumbing fix-
ture shall be located in any room or apartment which does not
contain a window placed in an external wall or is not otherwise
Provided with proper ventilation affording at least one air change
every seven minutes. The renuired }provisions for ventilation shall be in place before such fixture is installed.
Section 107. VENTILATING PIPE, HO,V CO i?dECTED. (a) Ventila-
tion pipes from toilet rooms shall be separate and distinct and
have no connection whatever v..rith the other ventilating ducts or
Pines in the building. Such ducts shall have a minimum area of
twenty-four ( 24) square inches.
(b) All gas water heaters must have a vent ')ie of anoroved
material installed so as to vent to the outside air; either
through an established flue or independefitly through the roof.
Rubber tubinrm shall not be used for gas supply lines.
ARTICLE 4X
SOIL, BASTE AND VENT PIPES
Section 103. MATZRI_AL. All main or branch, soil, waste, and
vent _pipes within the building shall be of cast iron, galvanized
steel or wrought iron, lead, brass or copper, extent that no gal-
anized steel or wrought iron pine shall be used for underground
soil or waste Sipes or for so:;_7_, waste, and vent pipes in build-
ings four stories or more in heir;ht. Concealed riaste nines under
bathroom floors shall be of lead, brass, copper or cast iron soil
pipe un to and includinm the fixture opening.
Section 109. FIXTURE UNITS. The follo,,,ring table shall be
employed to determine the minimum diameters of fixture trans, the
minimum diameters of `Taste nines from single fixtures, and the
fixture unit values to be assigned to fixtures.
-22-
In the classification of plumbing installations, class 1
(private) shall apply to fixtures in residences and apartments and
to fixtures in private bathrooms of hotels and similar installatio s
where the fixtures are intended for the use of a family or an indi
viaual.
Class 2 ( semipublic) shall F.pply to fixtures in office build-
ings, factories, dormitories, fraternity and sorority houses, and
similar installations where the fixtures are intended for the use
of the occupants of the building.
Class 3 (public) shall apply to fixtures in general toilet
rooms of schools, gymnasiums, hotels, railroad stations, public
comfort stations, and other installations (whether pay or free)
where a. number of fixtures are installed so that their use is
similarly unrestricted.
Fixture unit ratin-s for all fixtures Miven a sinp•le rating
shall apply to those fixtures in all classes of installations.
MINIrdU14 TRAP DIA11ETERS, 111111TIPaiM DRAIN
SIZES, AND FIXTURE UNIT VALUE'S
11inimum
Nominal
11inimum Diameter,
Nominal Indivi-
Trap dual Fixture
Diameter Drain Units
Inches Inches
1 lavatory or rashbasin, class 1 1 1 1
1 lavatory or iriashbasin, c1.2
or
. 1 1� 2
1 i,,Tater-closet, class 1, 2, •or 3 3 3 6
1 bathtub, class 1 . . . . . . . 1 11 2
1 bathtub, class 2 or 3 . . . . 12 l2 3
1 shower stall, shower head only,
class 1 . . . . • . . . , 11 1Q 2
1 shower stall, multiple spray,
class 1 . . . . . 2 2 4
1 shower stall, shower head only
class 2 or 3 . . . . . . . . 2 2 3
1 shower stall, multi_nle spray,
class 2 or 3 . . . . . • • . 3 3 6
Gang shower, for each shower
head . . . . . . . . . • . . -- -- 5
1 urinal, lip, or each 3 feet of
trou,;h or putter . • . • . • . 1L lz 2
1 urinal, stall or wall hung with
tank or flush valve supply . . 2, 2 4
1 urinal, pedestal or blow-out 3 3 5
1 sink, residence or apartment
kitchen sink, dishwasher,
butler' s or pantry, sink,
class 1 . . 11 11 2
1 sink, hotel or restaurant 12 lz 3
1 sink, hotel or restaurant
vegetable sink . . . . . . . . 12 12 3
1 sink, hotel or restaurant glass
sink 12 12 3 i
1 sink, hotel or restaurant ;.
silver sink 12 12 3
1 sink, lunch counter bar sink 1� 12 3 F
1 sink, soda fountain bar sink 18 l� 1. 5
1 sink, ordinary slo- sink 2 2 3
1 sink, siphon ,jet slop sink,
1 flush rim or mop . . . . . . . 3 3 6
( Tftb
c-x�r1-e-94*
-23-
�'��V ii.Ill.1�LJ��r1u��1cR177�'�y11rA. 41 ���Gwut['F7'/�I6L�i�Y1.
1 dishwasher . . • • • • . • • 2 2 4
1 sink, bedpan sink or bedpan 3 3 6
washer .
1 sink, laboratory, surgeon' s 12 1. 5
or medical sink . . . . . . . 1z
1 sterilizer, instrument, utensil l 0. 5
or T�,rater l2 6
3 3
1 sterilizer, bedpan z l�_ 3
1 laundry tray 1
1�'- 1� 3
1 combination f ixture i 11 2
1 foot bath or sitz bath 1 0.5
1 infant' s or baby' s slab bath 12 1
1L 12 3
1 bidet . . . . . . . . . . . . . 11 12. 0. 5
1 drinking fountain . •
11 0. 5
1 cuspidor, fountain or dental . �" 24 1
1 floor drain, ordinary . . • • -
1 floor drain, basement or 3 3 3
�Touna floor . . • • • • • • •
i 1 floor drain, receiving; overflow
from tanks or discharges from
unrested fixtures shall be
rated on the estimated maximum
flow, for each gallon per 1
minute . . . . • • • • • • • .
1 seviage ejector, for each 25
gallons per minute discharge 30
capacity . . . • • • • • • • ' •
Note: Waste lines and trans to be not less than the diameter
of the waste onenin,rs of fixtures served.
One hundred and eighty (120) square feet
toof rooffiyt oe drained
area in horizontal ?-m,�ection shall as
count as� Sumn pumps, ejecting storm or seepage water, shall rbe counter eddis-
drained area, 600 square feet for each 25 gallons ..
charge capacity.
A floor drain receiving; regular or intermittent discharges
from fixtures shall be counted as the total of the fixtures draine
into it.
Section 110. SOIL AND V7ASTE STACKS. Every building in which
Plumbing fixtures are installed shall have a soil
or waste stack
tin s
or stac'r.;� extending full size thru the roof. _
shall be "Extra Heavy" cast iron. Additional vent stacks need not
be the size of the main stack providing the additional vent stacks
are within 30 feet of the full size stacks and. that al__, a,ste or
soil pipes within one building discharge into the sane house drain
Iv,rithin one building. The reruired. sizes Of soil and !paste stacks
shall be determined from the distribution and total of all fixture
units connected to the stec'ts in accordance r,ith the following
table.
rn�
11a.XIIM1 FIXTURE UNITS ON ONE STACK
Diameter 671th 'T; th all 450Y or Total on
(Inches) "Sanitary T" ( "Combination Y any
Inlets and one-eighth One Stack
Bend" Inlets
In One In One
Branch Branch
Interval Interval
1 1/4 1 1. 1
1 1/2 3 4 8
2 9 15 16
3 24 45 48
4 144 240 256
S 324 540 680
6 672 1122 1380
8 2038 3480 3600
Restrictions : No rater-closet shall discharge into a stack
less than 3 inches in diameter. Not more than two water-closets s all
discharge into a 3 inch branch, and not more than two branches may:
connect to a 3 inch stack at the sa.,me point or level.
Section 111. SOIL AND TASTE STACKS-FIXTURE CO NECTI(11S. All
soil and Taste stac'.s, and branches s.-a,_ll be provided with correc -
ly faced inlets for fixture connections. Base stag, fittings for
3 inch soil_ waste stacks shall be one size larger and when Tong
sweep base fittings are used the hub end shall be one size smaller
than the fitting itself. The same principle shall govern in using
Ys and bends..
Section 112. CHANGING SOIL AZ VENT PIPES. In existing build
ings where the soil or waste vent ripe is not extended undiminished
through or above the roof, or where there is a sheet-metal soil or
waste vent nine, and the fixture is changed in style or location
or is replaced, a. soil or caste vent nine of the size and material
prescribed for new work shall be installed.
Section 113. PROHIBITED CONNECTIONS. No fixture connection
shall be made to a lead bend or branch of a, water closet or simila
fixture. No soil or waste vent, circuit or loop vent above the
highest installed fixture on the branch or main shall thereafter
be used a.s a soil or Taste Wipe.
Section 114. SOIL AND WASTE PIPES SUPPORTED AMID PROTECTED.
All soil -pipes in horizontal runs shall be hunr,Tlith substantial
iron hangers at intervals not to exceed eight (8) feet. Soil and
vent lines in vertical runs shall be rested on the first floor
with an iron nine rest end every tvfi,enty (20) feet above. All
other Taste and vent lines shall be hung at intervals not to ex-
ceed ten (10) feet. PIo soil, waste or vent stack shall be in-
stalled outside a buildin'-, unless aden_uate provision is made
to protect it from frost.
Section 115. ROOF EXTENSION. All roof extensions of soil and
waste stacks shall be increased as follov,s and when the roof is
used for other purnoses than ,R,eather protection such extension
shall be not less than 7 feet above the roof.
-25-
u �
14 inches increased to 22 inches
12 inches increased to 22 inches
2 inches increased to 4 inches
22 inches increased to 4 inches
3 inches increF�sed to 5 inches
32 inches increased to 5 inches
4 inches increased to 6 inches
42 inches increased to 6 inches
5 inches increased to 6 inches
Change in diameter shall be made by use of a long increaser
beginning at least one (1) foot below the roof. Increasers shall
be not less than thirty (30) inches in length.
Section 116. TERMINALS. The roof terminal of any stack or
vent, if within 12 feet of any door, window, scuttle, or air shaft
shall extend at least 3 feet above the same, except v7hen such roof
extension terminates on a roof at right angles to a i,,indoi�r, at
least 6 inches back from the face of the wall of such window; or
2 feet back of the face of a dormer window, a. distance less than
12 feet may be permitted by the �s1x7t �.�
nlumbin{; inspector.
Section 117. TER: INALS ADJOINING HIGH BUILDINGS. No soil,
waste, or vent pipe extension of any new or existing building
shall be run or nlaced on the outside of a wall, but shall be
carried un in the inside and through the roof.
In the event that a new building; is built higher than an exist-
ing building, the owner of the new building shall not locate
windows within 12 feet of any existin�� vent stac'= on the lower
building unless the owner of such new building shall defray the
expenses or shall himself make such alteration to conform with
section 116.
It shall be the duty of the owner of the lower or existing
building to make such alteration therein upon the receipt in ad-
vance of money or security therefor, sufficient for the purpose,
from the owner of the newor higher buildinp- to nermit, at the
election of the owner of the new or higher building, the making
of such alteration by the owner of said new or higher building.
Section 118. TRAPS PROTECTED, VENTS. Every fixture trap
shall be )rotectea against s'iphonage and back pressure, and air
circulation assured by means of a nronerly installed vent. No
crown vent shall be instal led.
Section Jig. DISTANCE OF VENT FROL THE TRAP SEAL. No trap
shall be solaced more than 5 feet, horizontal developed length,
from its vents, except that a 6 foot horizontal developed length
for a bathtub trap and 12 feet for a floor drain will be ner-
mitted. The distance shall be measured alone the central line of
the waste or soil nine from the vertical inlet of the trap to the
vent opening. The vent opening from the soil or waste pipe, ex-
cent for ?eater-closets and similar fixtures, shall not be below
the dip of the trap. Not r.'ore than one fixture shall be placed
on an arm unless such openings are vented.
Section 120. MAIN VENTS TO Co 1I4 CT AT BASE. All main vents
or vent stacks shall connect full size at their base to the main
soil or waste nine at or below the lo,=iest fixture branch and shall
extend undiminished in size above the roof or shall be reconnected
with the main soil or ra.ste vent at least 3 feet above the high-
est fixture branch.. All vent pipes shall connect to soil, waste,
or vent stacks or shall extend through the roof.
Section 121. VENTS, REQUIRED SIZES. The reruired size of ma n
vents or vent stacks shall be determined from the size of the soh
or waste stack vented, the total number of fixtures drained into
it, and the developed length of the vent, in accordance with the
following table, interpolating when necessary bet,,�teen ?permissible
lengths of vent given in the table:
-26-
MAXIMU11 PEHL: I SSIBLE LENGTH OF VENTS (IN FEET) FOR
SOIL AND WASTE STACKS
Diameters
of Soil or Number of Diameter of Vent (In Inches)
Naste State Fixture
(Inches) Units
li 12 , 2 22 3 4 5 6 8 10
11 1 45 - - - - - - - - -
12 U�n- t o 8 - 60 - - - - - - - -
2 16 - 50 90 _ - - - - - -
22 36 - 45 75 105 - - - - - -
3 12 - 3S 120 180 212 - - - - -
3 18 - 18 70 130 212 - - - - -
3 24 - 12 50 130 212 - - - - -
3 36 - 8 35 93 212 - - - - -
3 48 - 7 32 80 212 - - - - -
4 24 - - 25 110 200 300 340 - - -
4 48 - - 16 65 115 300 340 - - -
4 96 - - 12 45 84 300 340 - - -
4 144 - 9 36 72 300 340 - - -
4 192 _ _ 8 30 64 282 340 -
256 7 20 56 245 340 - -
5 72 - _ - 40 65 250 390 440 - -
5 144 - _ - 30 47 180 390 440 - -
5 288 _ - _ 20 32 124 390 449 - -
5 432 _ _ _ 16 24 94 320 440
680 10 16 70 225 440 -
-
6 144 - - _ - 27 108 340 510 - -
6 288 - - - - 15 70 220 510 630 -
6 576 - - - 10 43 150 425 630
6 864 - _ - - 7 33 125 320 630
6 11330 - - - 6 25 92 240 630 -
8 320 _ _ _ _ _ 42 144 400 750 900
8 640 30 86 260 750 900
8 980 - - - .- 22 60 190 750 900
8 1, 600 - - - - - 16 40 120 525 900
8 3 600 - - - - - 12 28 90 370 900
' t
Section 122. BRANCH, INDIVIDUAL, GROUP V0,,1 TS AND INET VENTS.
No vents shall be less than 14 inches in diameter. For 14 and 11
inch wastes the vent shall be of the same diameter as the waste
pipe, and in no case shall a branch or mainvent have a diameter
less than one-half that of the soil or waste pipe served, and in nc
case shall the length of a branch vent of given diameter exceed
the i-iiaximum lengt'-i permitted for the Main vent serving the same
soil or vent stack.
A group of fixtures located on the same floor level may be
group vented, providing thy- t the highest fixture trap of such a
group is not more than four (4) feet above the lo.aest fixture
trap, but such installations shall be subject to the following
limitations:
_27_
(a) One fixture of two or less units may drain into the
vent of a 3 inch closet branch.
(b) One fixture of two or less units may drain into the
vent of a 1T inch bathtub waste nine.
(c) Two fixtures of two or less units may drain into the
vent of a 2 inch bathtub waste serving tslio or less tubs provid-
ing that they drain into the vent at the same level.
(d) There bathrooms or water-closets or other fixtures are
located on opposite sides of a. wall or partition or are adjacent
to each other within the --)resdribed distance such fixtures may
have a common soil or waste Pipe and common vent. Water closets
having a common soil and vent stack shall drain into the stac'<.
at the same level. Lavatories, sinks or similar fixtures having
a common �-aste and vent nine shall drain into the ~pine at the
same level. - -
Wherever possible all vents shah be continuous vents, that
is, a continuation of the vertical waste line.
Basement closets or floor drains whose connection to the
house drain is 5 feet or more from the base of the stac!. may be
vented by a wet vent from a 1st floor sink or lavatory having a
1IT" vent pipe for a 311 closet branch or a 2" vent for a 411 closet
branch.
Section 123. VENT PIPE GRADES Ac:D CONNECTI ;N S. All vent
and branch vent YDi~)es sh^Il be free from drops and sags and be so
graded and o..nnected as to drip back to the soil or waste nine by
gravity. Whenever possible, where dry vent pines connect- to a
horizontal soil or waste nipe the vent branch shall be takken off
above the center line of the pine, and the vent ppipe rise verti-
cally or at an angle of 450 to the vertical to a oint 6 inches
above the fixture it is venting before offsetting orizontally
or connecting to the branch, main waste, or soil vent.
Section 124. CIRCUIT AND LOOP VENTS. A circuit or loop
vent will be permitted as follows. A branch soil or waste Dine
to which two -and not more than eight water-closets ?pedestal
urinals, tram standard slop sinks or shower stalls are connected
in series may be vented by a circuit or loop vent, which shall
be taken off in fronVof the last fixture connection. Where fix-
tures discharge above such branch, each branch shall be provided
with a relief vent one-half the diameter of the soil or -waste
stack, taken off in front of the first fixture connection.
Section 125. V1VTS NOT REQUIRED. No vents will be required
on a down snout or rain leader trap, a back-water valve, a. sub-
soil catch basin trap, or on a. cellar floor drain, _provided the
cellar floor drain branches into the house drain on the sewer
side at a distance of 5 feet or more from the base of the stack
and the branch line to such floor drain is not more than 12 feet.
Section 126. FUTURE VLTITS. A 11 inch vent nine shall be
extended below the basement ceiling; line for future fixtures.
ARTICLE X2
HOUSE DRAINS AND Sr.ERS
Section 127. INDEPENDENT SYSTIE11. The drainage and plumbing
system of each new building and of ner, work installed in an exist-
ing building small be separate from and independent of that of any
other building, except as provided below, and every building shall
have an independent connection with a public or private sew'e when
available. -
Excention: Where one building stands in the rear of another
building on an interior lot under the same ownershin and no pri-
vate sever is available or can be constructed to the rear build-
ing through an adjoining alley, court, yard, or driveway, the
-28-
house drain from the front building may be extended upon annroval
of the City Council to the rear building and the whole will be
considered as one house drain.
Section 128. OLD HOUSE. SOVERS AND DRAINS. Old house severs
and drains may be used in connection with new buildin[-^s or new
plumbing only when they are found, on examination, to conform to
the reouirements governing new sewers or drains as prescribed in
this ordinance. '
Section 129. CONNECTIUNIS WITH PRIVATE SETIAGE DISPOSAL WORKS.
When a sewer is not available, drain nines from buildings shall be
connected with °private sewage disposal vviorks designed and con-
structed as recommended by the Iowa State Department of Health. No
private sewage disposal works shall be constructed where the -,-)ubli
sewer is available to the first floor of a building. A plan show-
ing ti'le location and design of the septic tank and secondary treat
meat and also the location of a.ny and all wells within 75 feet of
the site shall be filed !��,ith the application for a plumbing permit
The minimum distance between any hart of a private septic
tanl: and any hart of an occupied building shall be t�%enty-five
(25) feet.
Section 130, EXCAVATION NEW AND RECONSTRUCTED SEWERS AND
WATER SUPPLY PIPES. Except a.s hereinafter provided i�?ater service
and 'house sewer nines shall be separated ten (10) feet horizontal
distance throughout their lengths.
Where conditions render such separation infeasible sewer
and water pipes may be laid in the same trench.
The minimum vertical and horizontal distances stated above
shall also apply to the location of the curb cock or curb stop
valve.
Wherever possible the house sewer shall be laid at a death
of not less than 9 feet below street grade from the main sewer to
a point not less than 8 feet from the property line. Reneirials may
be replaced at existing death or lower if desired.
All excavations required to be made for the installation of
a house-drainage system, or any part thereof wlt �3n the walls of a
building, shall be oven trench work. All such trenches and tunnels
shall be kept open until the Ioiping has been inspected, tested,
and approved by the Plumbing Insnector.
Gas pines shall. not be laid in the same trench as the sewer
or water service nines.
Sanitary and surface house drains may be laid in the same
trench.
Section 131. HOUSE DRAIS UNDERGROUND. Whenever possible
all house drains shall be brought into the building below the
basement or cellar floor.
Section 132. I,TATERIAL. The house sewer beginning 5 feet ou -
side of the inner face of building wall shall be of "Standa.rd" or
"Extra Heavy" cast iron bell and spigot nine joints calked with
molten lead not less than 12 oz. per inch diameter of nine. The
house dra _n shall be of lead, brass, copper, or "Extra Heavy" cast
iron. Cast iron to have bell and spigot joints called with molten
lead not less than 12 oz. per inch diameter of nine.
Section 133, DEPTH OF DRAI} S AND SZ7ERS. No house sewer
or underground 'house drain shall be laid parallel to or within 3
feet of any bearing wall, which might be thereby weakened. The
house serer and drains shall be laid at denths of not less than
five (5) feet to protect them from frost.
29-
Section 134. CONNIECTI0A OF HOUSE SETTER TO SANITARY SEVIER.
he house sewer shall be connected to the sanitary sewer by means o
vitrified collar. The house sewer shall be cemented to the
itrified collar by means of a well cemented and troweled ,joint.
The house sewer shall not be connected to the side of the sanitary
sewer or to a. sewer manhole without sn_ ecific nermission of the
Plumbing Inspector.
Section 135. SIZE OF HOUSE SErIERS HOUSE DRAINS AND HORIZON-
AL BRANCHES. The required size of a, sanitary house sewer, sani-
tary house drain, or branch of the sanitary house drain not re-
ceiving the discharge from fixtures on the same floor or level as
the drain, shall be determined in accordance 7ith the following
table except that no main house drain or sewer shall be less than
our (4) inches in dip-meter.
TABLE A
HOUSE DRAINS AND HOUSE SEWERS
( Sanitary only)
P.TP.ximum Number of Fixture Units For
Diameter of Pine 1/8 Inch Fall 1/4 Inch Fall 1/2 Inch Fall
Per Foot Per Foot Per Foot
1 1/4 inches . . . . 0 1 1
1 1/2 inches . . . . i 2 3. 5 4. 5
2 inches* 7 11 14
2 1/2 inches* . 17 21 27
3 inches (no water
closets) . . . 33 45 72
3 inches (not more
than 2 water- +
closets) 27 36 48
4 inches 114 150 [ 210
5 inches 270 370 540
6 inches 510 71?0 , 1,050
8 inches 11290 1,860 i 2, 640
f
10 inches 2, 5`O 31600 5,250
12 inches 4, 390 6, 300 9,300
15 inches 81300 11, 600 16, 800
*No water-closet shall discharge into a drain less than three
(3) inches in diameter, and no main house drain receiving; dis-
charges from water-closets shall be less than four (4) inches in
diameter.
Note: The table for sanitary drains only is based on mravit
flow in drains one-half full, it having been found that full
practical capacity is reached at annroximately that point on
account of air tranned in sanitary house drains.
The reruired size of a sloping; sanitary drain receiving the
discharge from fixtures on the same floor or level as the drain
(termed a horizontal branch) shall be determined in accordance
with the following table, extent the^t no main house drain or sewer
shall be less than four (4)4inches in diameter.
0-
TABLE B
HORIZONTAL BRANCHES HOUSE DRAINS AND
HOUSE SEWERS (Sanitary only)
Maxiim m ?Number of Fixture Units For
Diameter of Pipe /8 Inch Fall 1/4 Inch Fall 1/2 Inch Fal
Per Foot Per Foot Per Foot
1 1/4 inches . . . . . 0 1 1
1 1/2 inches . . . . . 2 3 4
2 inches* . . . . . 5 8 10
2 1/2 inches* . . . . . 12 15 18
3 inches (no water
closets) . . . . . 24 27 36
3 inches (not more
than two water
closets) 15 16 21
4 inches « 84 96 114
5 inches . . . . . . 180 234 280
6 inches . . . . . . 330 440 580
8 inches . . . . . . 870 1,150 11680
10 inches . . . . e a 1,740 21500 3, 600
12 inches . . . . 3,000 4, 200 6, 500
15 inches . 6,000 8, 500 13, 500
*No water--closet shall discharge into a, drain less than 3 inch-
es in diamSter.
The re--uired size of a sloping storm drain shall be determined
roi:1 the horizontal nro,jection of the total area drained by it in
accordance with the followinm table.
TABLE C
STORI:2 D RAINS ONLY
Maxim= Drained Area For
Diameter of Pine 1/8 Inch Fall 1/4 Inch Fall 1/2 Inch Fal
Per Foot Per Foot Per Foot
Sc?.Ft. So.Ft. Sq.Ft.
1 1/2 inches . 140 210 290
2 inches . . . . . . 300 440 620
2 1/2 inches . . . . . . 545 790 1,100
3 inches . . 865 1, 250 1, 750
4 inches 1,860 2, 650 3, 800
5 inches 3, 300 4,700 6, 650
6 inches . . 5, 250 7, 500 10,700
8 inches . . . . . . 11, 000 16,000 22, 200
10 inches . . . 19, 500 27, 500 40,000
12 inches . . . 32, 500 45, 500 65, 500
15 inches . . . 58.9000 81,000 115,000
Note: The table for storm drains only is based on gravity
floe in a full pipe, and a maximum rate of rainfall of four (4)
inches -)er hour.
Section 136. HOUSE SEVER IN I,1ADE GRO 1,jD. The house sever
when laid in made or filled-in ground shall be laid on bed of
u
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approved. grillave or concrete, or of extra heavy cast iron pipe.
Section 137. DRAINAGE BELOW SEWER LEVEL. In all buildings
in which the whole or part of the house drainage and plumbing
system thereof lies below the crown level of the main sewer,
sewage or house wastes beloiA, the sewer level shall be lifted by
approved artificial means and discharged into the house sewer.
Section 138. SUMPS AND RECEIVING TA_jKS. All sub-house
drains shall discharge into an air-tight properly vented sump or
receiving tank. so located as to receive the sewage by gravity,
from which sump or receiving taniK the sewage shall be lifted and
discharged into the house sewer by electric pumps or air xtx e-
jectors, or any other approved method. Sued' sumps shall be auto-
matically operated and each discharbe line shall be provided
with a suitable chec'- valve. 57ater or steam operated ejectors
or grater primed pumps connected to the water supply conveying
sewage or waste water shall be >Drohibited.
Section 139. SU110 VENTED. All sump_ s and receiving tanks
used for receiving; sewage or other wastes shall be orovided with
a. sena.rate vent extending through the roof. Such vent shall be
not less than 4 inches in diameter when sump receives water
closet discharge, and when sump receives wastes other than rater
closet discharge the vent shall_ be the same diameter as the waste
pipe. Sumps serving single family dwellings may connect to
other vents of the plumbing system 'providing that the other vent
is adequate in size on the basis of the sump pump or ejector be-
ing rated as a fixture according to Section 109. In single
family d,.ellings sumps of approved construction to which no fix-
tures, except one floor drain, are connected and which receive
only laundry wastes or basement drainage need not be air tight
nor vented.
Section 140. '610TORS, CO`.PRESSORS, ETC. All motors, air
compressors and air tanks shall be located nhere they are oven
for inspection and rena.ir at all times. The air tanks shall be
so nronortioned as to be of eoual cubical cana.city to the ejector
connected therewith, in which there small be maintained an air
pressure of not less than 2 pounds for each foot of height the
sewage is to be raised.
Section 141. EJECTORS FOR SUBSOIL DRAIiAGE. When subsoil
catch basins or sumps are installed below the serer level,
electrically operated pumps or ejectors or other approved sump
mumps shall be used. Such numns raisJng subsoil water shall dis-
charge in properly trapped fixture, or storm water drains
except ,!,,here the house seiirer is connected to a nriva.te septic
tank, when the discharge may be to the ground surface. '' a
ter
or steam operated ejectors or water primed pumps connected to
the water supply conveying sewage or waste eater shall be -)ro-
hibited.
ARTICLE XII
STOMI WATER DRAINS
Section 142. DRAINAGE OF YARDS, AREAS AND ROOFS. All
roofs and paved areas, yards, courts, and courtyards shall be
drained into the storm-rater sewerage system and not into the
sanitary sever system, There there is no sewer accessible, such
storm sewer connections shall be discharged into the public
gutter or other means of disposal as is permitted, by the City
Manager, and in such case traps ;gay not be required.
Section 143. SIZE OF GUTTERS AND LEADERS. No gutter or
inside leader shall be of less size than the following:
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Area of Roof (In souare feet) Gutter Leader
Inches Inches
Up to 90 . . . . . . . . . . 3 1
91 to 270 . . . . . . . . . 4 2
271 to 810 4 21
811 to 11800 5 3
1, 801 to 3,600 . 6 4
3, 601 to 5, 500 . . . . . . , 8 5
5, 501 to 9, 600 . . . . 10 6
Outside leaders to the frost line shall be one size lamer
than recuired in the above table.
Gutters 8 inches or over in widt__ on new building-s shall be
hung 7 ith wrought-iron hangers of approved tyne.
The above sizes of rain leaders are based on diameter of
circular rain leaders, and gutters based on semicircular sheet-
metal gutters T, ith the top dimension riven and other shaves shall
have the same sectional area.
Section 144. INSIDE CONDUCTORS. When placed within the
walls of any building or run in an inner or interior court or
ventilating nine shaft, all conductors or roof leaders shall be
constructed of cast iron or of galvanized wrought iron or galvaniz-
ed steel pipe.
Section 145. OUTSIDE COi�DUCTORS. �7hen Outside conductors
or down snouts of sheet metal are permitted with the house drain,
they shall be so connected by means of not less than one length
of castiron pipe extending vertically at least one (1 ) foot above
the grade line.
Along -public driveways without sidewalks they shall be
placed in niches in the valls,, protected by wheel guards, or enter
the building through the iT,allat a 45o slope at lea..st 12 feet
LD
above the grade.
Outside conductors shall not extend within the limits of any
street or alley without aP'proval of the City Council.
Section 146. DEFECTIVE CONDUOTOR PIPES. VI'zen an existing
sheet-metal conductor nine within the walls of any buildin€, be-
comes defective, such bo nductor shall be replaced by one which
conforms to this ordinance.
Section 147. VENT CC NECTI01S WITH 00 .IDUCTORS PROHIBITED.
Conductor pines shall not be used as soil., waste, or vent pipes,
or shall any soil, waste or vent pines be used as conductors.
Section 148. OVERFLOWS. Overflow nines from cisterns,
supply tanks, exnansi:7,n tanks, and drip �Dans shall not connect
,irectlyy with any house sewer, house drain., soil or was
te
nd shall be so constructed to 7provi6_e a complete air n pipe
east one (1) diameter of the waste nine opening; betwec a
aste line and the overflow nine.
he
Section 149. SUBSOIL FOM1DATIU1,1' CLEAR WATER AND ABSORPTIO PILE DRAII:-So Subsoil drains so placed as to intercept surface
ater around or within a building, shall be made of open ,jointed
rain the or earthenware nine not less than four inches in dismete
[he
d may discharge into a, storm sewer, street gutter or ravine, or
to a water tight sump, and pumped thru a pumz� operated by other
a.ns than steam, or crater to a level a'�ove the basement floor into
open tranned plumbing fixture, or into the soil pipe through a
onerly connected sani ta.ry fitti4,� `��ith a checlr valve placed in
discharge line of the }Dump.
0
Where the foundation drain has sufficient height to permit,
the discharge therefrcm may be over the basement floor into a
floor drain which is flush with the basement floor.
ARTICLE XIII
INDIRECT, REFRIGERATOR, ACID AND SPECIAL WASTES
Section 150. INDIRECT WASTE. No paste nine from a refrig-
erator, ice box or cold room, any receptacle where food is stored,
or sterilizer, autoclave, sterile water tank or any receptacle
used to treat, process or store surgical or hospital supplies and
equinment or receptacle for storing or dispensing drinking; water
shall connect directly with any house drain soil or waste nine,
except drinking; fountains which are properly trapped and vented.
Such waste nine shall in all cases empty over an oiler. sink, floor
drain, or other fixture that is properly sup,)lied with water,
connected, trapped and vented the same as any other fixture, and
an air gap of at least twice the diameter of the waste nine shall
e provided between the waste nine and the receiving receptacle
or waste pine except that an oven waste fitting; or back flow nre-
enter having an air aan equal- to one (1) diameter of the waste
pine and air vent area equal to 100 per cent of the waste nine
area. will be ?permitted on lines from- rooms or receptacles not sub-
Mted to a vacuum or directly connected to the water supply.
e also Sec. 153. )
Section 151. ACID WASTE. The waste pines, vent nines and
raps for acid tanks, sinks and other receptacles receiving the
ischarge of acids ;n chemic2-1 laboratories, electrotyping, litho-
raphing and other similar establishments shall not be connected
ith soil or ia.ste nines in buildings, but shall be constructed
f acid proof earthenware or acid proof _nine with bell and spigot
Joints, bells to be at least 3 inches deep and pith annular space
of less than one-half inch, or material of equal quality, lines
o be properly trapped at fixtures and carried to the house drain
r house sewer.
Section 152. BAR AND SODA FOUNTAIN `TASTES. A bar or soda
ountain may be drained indirectly over a sink or other receptacle
nd such sink or receptacle shall be located in full vies; on the
awe floor level as the bar or fountain it serves, and shall con-
ect directly to the sewer and be properly vented. All such bar
r soda fountain connections shall be installed under the annrova.l
f the nlumbin � inspector.
Section 153. REFRIGERATOR WASTES. Refrigerator -aste nines
hall be trapped and of a size not less than 1 inches for one- or
wo trans, 12 inches for three to six traps, and 2 inches for six
o twelve trans. Clean-out plugs shall be placed at points to
fiord easy access to lines for cleaning. When such waste lines
xtend more than one floor above the fixture they discharge over,
hey must be vented full size through the roof.
Section 154. DRINKI1`1G FOUNTAIN WASTES. Drinkinc, fountain
asses may discharge over oven fixtures and when so installed shall
ave the same installation requirements as for indirect wastes.
See sections 150 and 153. )
Section 155. OVERFLO1,7 PIPES AND 1.10TOR EXHAUSTS AIR CITIONIdG SYST vIS WATER SOFTENERS O -
� . a)
ipes from a water-su'-)ply tank or exhaust from a water lift or
ischarge from air conditioning units, compressors, water softeners,
r similar devices connected to the water supply shall not be
irectly connected with any house drain, house sewer, soil or
.aste nine. Such pine shall. discharge upon the roof or be drained
ver an open fixture properly trapped and shall end at a distance
f at least twice the diameter of the discharge pipe above the
aximum overflo�.f level of such fixture.
-34-
c • • 1 • .,
r
(b) No high nressure steam or blow, off exhaust shall be
directly connected to the house drain or sewer except when direct-
ed through an approved and properly vented expansion chamber, con-
denser, or device so constructed as to reduce the nressure to a
safe limit.
ARTICLE XIV
14AINTENANCE
Section 156. DEFECTIVE PLUIBING. All installed plumbing
systems and fixtures attached thereto found defective or in an
unsanitary condition shall be repaired, renovated, replaced or
removed within 10 days upon written notice from the plumbing
inspector. When defective plumbing is found to be dangerous to
the health of the occunants of a building or to the patrons of a
food establishment, the Plumbing Inspector shall notify the City
Health Officer, and said Health Officer shall take immediate
stens to protect the health of such occunants or natrons. In the
event the Plumbing; Inspector is of the opinion the defect found
endanr,ers the public water supply, the defect shall be immediately
corrected or the Plumbing system disconnected from the nublic
water supply.
ARTICLE XV
VALIDITY, PENALTY FOR VIOLATION AND REPEAL OF
CO`TFLIG11 ORDI N AN , .S
Section 157. VALIDITY OF ORDINANCE. Should any nrovision
of this ordinance be held by any court of competent jurisdiction
to be invalid, such decision shall not affect tine validity of the
remainder of the ordinance.
Section 158. VIOLATION OF ORDINANCE. Any Person, firm or
corporation violatinr, any provision of this ordinance shall, upon
conviction thereof, be fined a sum not exceeding; One Hundred
Dollars and costs, and in default of nayment thereof shall be
committed to the city or county ,jail until such fine and costs
are naid, not exceedin€° thirty days. Each day of the continuance
of such violation shall constitute a separate offense.
Section 159. REPEAL OF COitiFLICTING ORDINANCES. That all
ordinances or Parts of ordinances in conflict herewith are hereby
revealed; provided that such repeal shall not in any way affect
any act heretofore committed in violation of such ordinance so
revealed, or any nroceedings nor, pendinrr, thereunder, but all such
offenses heretofore committed against the provisions of such
ordinances, or any of them, may be nrosecuted and punished the
same as if said ordinances were in full force and effect.
Section 160. ORDINANCE Iii EFFECT. This ordinance shall
take effect and be in force from and after its nassage and Publi-
cation as re(-+-uired by law.
Passed the 17th day of November, 1941.
Published the 25th day of November, 1941 .
F�r'ilAfK D. PAIl�IE _._.
e �s __ ___- r„�
�4 er .,.ayor
City Clerk
I, J. 7V. Prather, City Clerk of the City of Ames, Iowa, do certify
that the above and foregoin's Ordinance No. 542 was duly and properly
passed at a meeting of the City Council on the 17th day of November
1941, and published in the Ames Daily Tribune on the 25th day of
November 1941.
. 'r. Prather, City Clerk
Recorded November 19, 1941