HomeMy WebLinkAbout~Master - Adopting Revisions to Plumbing Code ORDINANCE NO. 3221
AN ORDINANCE TO AMEND THE MUNICIPAL CODE OF THE
CITY OF AMES, IOWA, BY REPEALING SECTIONS AND SUB-
SECTIONS 21.101, 21.201(2), 21.202(5), 21.302, 21.303(1),
21.304, 21.401, and 21.501 AS THEY NOW EXIST AND ENACT-
ING NEW SECTIONS AND SUBSECTIONS 21.101, 21.201(2),
21.202(5), 21.202(6), 21.302, 21.303(1), 21.304, 21.401 AND
21.501 FOR THE PURPOSE OF BRINGING THEM INTO COMPLI-
ANCE WITH THE MOST RECENT UNIFORM CODE; REPEALING
ALL ORDINANCES IN CONFLICT HEREWITH; ESTABLISHING
A PENALTY AND SETTING AN EFFECTIVE DATE.
BE IT ORDAINED, by the City Council for the City of Ames, Iowa:
Section One. The Municipal Code of the City of Ames, Iowa is hereby amend-
ed by repealing Section 21.101 as it now exists and enacting a new Section 21.101
as follows:
"Sec. 21.101. PLUMBING RULES AND REGULATIONS.
The Uniform Plumbing Code, 1991 Ed. Published by the Internation-
al Association of Plumbing and Mechanical Officials, (herein called
UPC), Chapters 1-13, Appendices A, B, C, D, and H and Installation
Standards shall be the plumbing code for the City of Ames, Iowa, ex-
cept for such modifications, additions or deletions as hereinafter
enacted.
(Ord. No. 2860, Sec. 1, 10-25-83; Ord. No. 3198, Sec. 1, 9-24-92)"
Section Two. The Municipal Code of the City of Ames, Iowa is hereby
amended by repealing Subsection 21.201(2) as it now exists and enacting a new
Subsection 21.201(2) as follows:
(2) Application for permit. An application shall be made in writing at
the inspection division on the form provided by the city, along
with such plans as may be required by the Building Official.
Only Master Plumbers from a registered Plumbing Contractor may
apply for a plumbing permit, except that permits are not required
for public water mains or public sewer mains.
Section Three. The Municipal Code of the City of Ames, Iowa is hereby
amended by repealing Subsection 21.202(5) as it now exists and enacting new
Subsections 21.202(5) and (6) as follows:
"(5) Notice of final inspection. It shall be the duty of the person
doing the work authorized by the permit to notify the inspector,
orally or in writing, that said work is ready for inspection. It
shall be the responsibility of the permittee to ensure that access
is provided such that an inspection can be made. Upon the satis-
factory completion and final test of the plumbing system a notice
of final inspection, with the signature of the plumbing inspector
thereon, will be posted in a suitable place in the building and a
record of such final inspection retained in the inspection divi-
sion.
21-1 Mar. 19, 1993
(6) Installation Inspection. Under no circumstances shall plumbing
installations be backfilled prior to inspection. Work backfilled
prior to inspection shall be uncovered by the plumber doing the
work. Rigid pipe installations shall be such that all pipe joints
are visible with backfill placed only to stabilize the pipe posi-
tion prior to inspection. Flexible pipe shall have no more back-
fill placed than to the middle of the pipe prior to inspection.
Following inspection and approval, the rigid pipe installation may
be backfilled with approved materials. Following review of the
flexible pipe installation, the inspector shall observe the place-
ment of select rock backfill to a point 6" over the pipe. Follow-
ing approval of the initial backfill, the remaining backfilling
operation may continue using approved materials.
(Ord. No. 2707, Sec. 1, 2-20-79; Ord. No. 3198, Sec. 1, 9-24-92)"
Section Four. The Municipal Code of the City of Ames, Iowa is hereby
amended by repealing Section 21.302 as it now exists and enacting a new Section
21.302 as follows:
Sec. 21.302. REGISTRATION.
Before doing any plumbing business in the city, a plumbing con-
tractor shall be registered with the City Inspection Department. The
master plumber must come into the inspection division office to register
in person each year.
(1) Conditions for Registration. A plumbing contractor shall meet both
of the following requirements as a condition of registration:
(a) Each plumbing contractor shall have at least one licensed
master plumber employed by or working for the contractor at
all times.
(b) Each plumbing contractor shall have at least one licensed
journeyman plumber employed by or working for the contrac-
tor at all times.
(2) Information to be provided. An applicant for plumbing contractor
registration under this section shall provide to the Plumbing
Inspector the following information:
(a) The complete name, complete mailing address, street address
and telephone number of the firm or corporation.
(b) The name, position and private mailing address of a manager
or general agent of the firm or of each officer of a corpora-
tion and the registered agent for service of legal process on
the corporation.
(c) The name, position and private mailing address of a person
who is authorized to bind the firm in legal agreements.
21-2 Mar. 19, 1993
(d) If the registration is to be as an individual only, the name
and mailing address, street address and telephone number of
the individual.
(e) The State Division of Labor registration number.
(f) Every registrant shall carry Contractor's Commercial General
Liability insurance in not less than $500,000.00 combined
single limit and shall provide proof of coverage to the Build-
ing Official before registration.
EXEMPTION: When registrant is the property owner, proof
of general liability insurance coverage of $500,000 is re-
quired in lieu of contractor's commercial liability coverage
and no state registration number is required.
(g) The names of all master plumbers employed by or working for
the plumbing contractor.
(h) The names of all journeyman plumbers working for the plumb-
ing contractor.
(i) The names of all apprentice plumbers employed by or working
for the plumbing contractor.
(j) Other technical data and information pertaining to the work to
be done as may be required by the Building Official.
Every Registrant shall provide the required information accurately
and completely. The Plumbing Contractor, if an individual, shall
come into the inspection office to register in person each year.
When the plumbing contractor is a firm, a licensed master plumber
of the plumbing contractor, shall come into the inspection office
to register in person each year. Any changes in the required
information shall be reported to the office of the Building Offi-
cial within ten (10) days from the date the information previously
supplied has become inaccurate for any reason.
(3) Plumbing Inspector Shall Respond. After application for registra-
tion has been received by the Inspector, the Inspector shall act
promptly to issue the registration or to determine on what basis
the registration may not be issued. The Plumbing Inspector shall
so respond not later than two weeks following application.
(4) Expiration and Renewal of Registration Registration shall expire
annually on January 1 and may be reactivated so long as the regis-
tration information remains accurate and proof of continued liabil-
ity coverage is submitted.
(5) Transfer of Registration is Prohibited. No registrant under this
section shall allow their registration by name or other identifica-
tion to be transferred or assigned to or in any manner directly or
indirectly used by any person, firm or corporation other than the
one to whom issued, for any purpose.
21-3 Mar. 19, 1993
(6) Registration Suspended. The Plumbing Code Board of Appeals
shall have the authority to suspend any registration issued under
this section for any of the following acts by the Registrant:
(a) Continued work after the issuance of a stop order.
(b) Initiating work in violation of the Board's decision or prior
to the Boards decision.
(c) Causing or permitting the unauthorized or prohibited use of a
valid registration, by another, such as to allow the rights
and privileges of registration to be applied to one not duly
registered.
(d) Judgment entry of two (2) violations of any of the provisions
of this chapter committed within a period of twelve (12)
consecutive months.
Such suspension of registration shall be for a time not to
exceed six (6) months. After expiration of such period of
time as the Board shall have designated, and after payment
of any outstanding penalties, costs, fees and proof of compli-
ance and routine renewal fee, if it has become due in the
interim, the suspended registration shall again become valid
and effective.
(7) Registration Revoked. The Plumbing Code Board of Appeals shall
have the authority to revoke any registration issued under this
section for:
(a) A violation constituting the practice of any fraud or deceit
in securing (a) a license or (b) a permit.
(b) Three (3) violations of this chapter committed within a period
of twelve (12) consecutive months.
Such revocation of a registration by the Board shall be full and
final cancellation of such registration, made effective on the date
of the Board's decision. Any Registrant so judged by the Board
shall not, thereafter, be allowed to be registered again in the
City.
(8) Suspension or Revocation Hearing In considering allegations under
this section regarding suspension or revocation of a registration,
the Board of Appeals shall proceed upon sworn information fur-
nished it by an official of the City, or by any person. Such
information shall be in writing and shall be duly verified by the
person familiar with the allegations made. The Board shall issue
an order setting the matter for hearing at a specified time and
place, and the Secretary of the Board, with the advice of the City
Attorney, shall cause a copy of the Board's order, and of the
allegations, to be served upon the Registrant by registered mail at
least fifteen (15) days before the date set for the hearing. The
Registrant may appear in person or by counsel at the time and
place named in the order and present his/her defense to the
21-4 Mar. 19, 1993
Board. The City Attorney shall provide counsel for the Board.
If the Registrant fails or refuses to appear, the Board may proceed
to hear and determine the allegations in his/her absence. If
he/she admits the allegations, or if, upon a hearing, the Board
finds any of the allegations to be true, it may enter an order
suspending or revoking the registration. Suspension or revocation
resulting from a decision of the Board shall preclude the Regis-
trant from securing a permit for work controlled by that registra-
tion in the city, or from becoming so registered under alternated
identification, as long as the suspension or revocation is in
effect.
(Ord. No. 3198, Sec. 1, 9-24-92)"
Section Five. The Municipal Code of the City of Ames, Iowa is hereby
amended by repealing Subsection 21.303(1) as it now exists and enacting a new
Subsection 21.303(1) as follows:
11(1) Application for License Required. Each applicant for a license
either as a Journeyman or Master Plumber shall fill out and file,
an application for license on forms furnished, submit proof of at
least 4 years of apprenticeship to a licensed Journeyman Plumber
and pay the required testing fee. Prior to testing the application
shall be reviewed and approved by the Plumbing Inspector.
Should the accuracy of the application or qualifications of the
applicant be questioned, the Board of appeals shall render its
judgment in the matter."
Section Six. The Municipal Code of the City of Ames, Iowa is hereby amend-
ed by repealing Section 21.401 as it now exists and enacting a new Section 21.401
as follows:
"Sec. 21.401. PLUMBING BOARD CREATED; MEMBERSHIP,
APPOINTMENT; QUORUM; AUTHORITY
(1) Plumbing Board Created. There is hereby created a Board of
Plumbing Examiners and Appeals, of three (3) members, at least
one of whom shall be a Master Plumber and one shall be a Journey-
man Plumber and the third shall be either a Master or a Journey-
man Plumber or shall have professional teaching experience or
study in engineering of plumbing systems, appointed by the mayor
and approved by the city council. Only one (1) employee, associ-
ate or representative per business or firm shall be on the Board at
a time. Two (2) of the voting Board members shall constitute a
quorum for the transaction of business. The plumbing inspector em-
ployed by the city and one person from the Building Code Board
of Appeals shall be members ex officio of the Board without voting
power.
(2) Records of Board Proceedings. A record of all proceedings of the
Board shall be kept which shall set forth the issues or requests
submitted to the Board, the reasons for the Board's Decisions, the
vote of each member, the absence of a member, and any failure of
a member to vote.
21-5 Mar. 19, 1993
(3) Authority of Board. The Board has the responsibility and authori-
ty to:
(a) Approve areas to be administered.
(b) Act as a Board of appeals to hear appeals from decisions of a
plumbing inspector when it is claimed that the true intent of
the plumbing code has been incorrectly interpreted, the pro-
visions of the code do not apply, or an equally good or better
form of construction can be allowed.
(c) The Board shall review proposed changes to this chapter and
make recommendation to the city council.
(d) The Board shall adopt, from time to time such rules and
regulations as it may deem necessary to carry into effect the
Board's duties as set out in this chapter.
The Board shall have no power to waive any provision of this code.
The Board shall have no authority over activity within city right-of-
ways or easements. This authority is reserved to the Director of Public
Works. The Board shall have no authority over the sizing of water
meters, this authority is reserved to the Director of Water and Pollu-
tion Control.
(Ord. No. 821, Sec. 1, 11-22-55; Code 1956, 20-1; Ord. No. 3198, Sec. 1,
9-24-92) "
Section Seven. The Municipal Code of the City of Ames, Iowa is hereby
amended by repealing Section 21.501 as it now exists and enacting a new Section
21.501 as follows:
"Sec. 21.501. AMENDMENTS, ADDITIONS AND DELETIONS.
The provisions of the UPC for the City of Ames are modified as follows:
(1) Amend Section 102(c) UPC to read as follows: "Administrative
Authority" - The Administrative Authority is an individual, Board,
department or agency employed by a city, county or other political
subdivision of the state who is authorized by local ordinance to
administer and enforce the provisions of the plumbing code as
adopted.
(2) Add to Section 103 UPC this definition for 'building storm drain':
a building (house) storm drain is a building drain used for convey-
ing rain water, surface water, ground water, or other similar
discharge exclusive of sewage and industrial waste to a building
storm sewer.
(3) Add to Section 103 UPC this definition for 'building storm sewer':
a building (house) storm sewer is a building sewer which conveys
the discharge of a building storm drain to a public storm sewer, or
other point of disposal.
21-6 Mar. 19, 1993
(4) Add to Section 120 UPC this definition for 'subsoil drain': a
subsoil drain is a drain which receives only subsurface or seepage
water and conveys it to a place of disposal.
(5) Add to Section 120 UPC the definition of 'sump service line': A
sump drain line from the sump pit to the city storm sewer main.
(6) Delete subsections 201(e), (f), (g), (h) , (i), and (j) UPC, and
insert in lieu thereof the following:
(e) The provisions of this code are not intended to prevent the
use of any alternative material or method of construction,
provided the alternative has been first approved by the Iowa
Department of Public Health.
(f) Requests for consideration of alternative materials or methods
of construction shall be submitted in writing to the Iowa
Department of Public Health by the building owner or his
agent with substantiating data and drawings.
(g) If granted, permission for the use of alternative materials or
construction methods shall be in writing and shall include the
limitations and conditions of use.
(7) Amend Section 203(a) and (b) UPC to read as follows:
(a) Copper tube for underground drainage and vent piping shall
have a weight of not less than that of copper drainage tube
type "L".
(b) Copper tube for above-ground drainage and vent piping shall
have a weight of not less than that of copper drainage tubing
Type M.
EXCEPTION: Type DWV may be used in one-and two-family dwell-
ings.
(8) Amend Section 203(d) UPC to read as follows:
Copper tube for water piping shall have a weight of not less than
Type M.
EXCEPTION: Underground water piping shall have a weight not
less than Type K copper tubing.
(9) Amend Section 209 UPC by adding these sentences to the end of
the section:
When backwater valves are required by section 409(a), they shall
consist of manually operated valves. Approved valves which are
automatic in operation as described in this section may also be
used but are not required.
(10) Amend Section 303(a) UPC by adding the following: More than
one connection to a public sewer may be allowed by the Administra-
tive Authority.
21-7 Mar. 19, 1993
(11) Delete Section 317(a) UPC and insert in lieu thereof the following
provisions on Plumbing Excavations and Trenching:
(a) Responsibility for protecting the public. The plumbing con-
tractor shall without further or other order, provide, erect
and maintain at all times during the progress and suspension
of the work and until final completion thereof and removal of
all obstruction occasioned by the work within the street
limits, suitable and requisite barriers, signs or other ade-
quate protection and shall maintain such warning lights,
barricades or watchmen as may be necessary, to insure the
safety of the public. Signs used shall conform to the most
recent edition of the Iowa Manual on Uniform Traffic Control
Devices.
(12) Amend Section 317 UPC by adding new subsections (e), (f), (g)
and (h) as follows:
317(c) Excavations within street limits. It shall be unlawful for
any person, firm or corporation doing plumbing work to begin any
excavation or pavement cut or to place any obstructions within the
limits of any street, avenue, alley or public place within the
corporate limits of the City of Ames, Iowa without first having
made application to the city and receiving a permit therefore. All
matters pertaining to the cutting of pavement 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 ordi-
nances relating thereto.
317(f) Backfilling building service ditches. The city or the
plumbing contractor, at the City's option, will backfill all ser-
vice ditches and excavations within the limits of all streets,
alleys and public places within the corporate limits of the city.
The plumbing contractor shall notify the city when such ditches or
excavations are ready for backfilling and the city will fill the
same as promptly as possible thereafter, or will permit the con-
tractor to backfill. The plumbing contractor, if allowed to back-
fill, will maintain a two-year maintenance bond on the backfill,
payable to the city. The responsibility of the plumbing contractor
for the maintenance of warning lights, barricades or other protec-
tion shall cease when the city begins the work of backfilling the
ditch or not later than the end of the next working day, exclud-
ing Saturday, Sunday or holidays, from the time of the receipt of
written notification by the city that the ditch is ready for back-
filling. The city will charge the plumbing contractor for such
backfilling work in accordance with such schedule of fees and rates
as shall from time to time be promulgated by resolution of the city
council. All other ditches outside public areas shall be back-
filled by the plumber as specified in 317(d) .
317(g) Manufactured Plug Required. All water, sanitary sewer,
and foundation drain service lines shall be plugged with a water-
tight manufactured plug when left unattended during installation.
In this instance, unattended shall mean for any time period greater
than one hour. No cast iron blind plugs shall be used. The
21-8 Mar. 19, 1993
following are approved caps: Dearborn No. 3412, Ecno plug, IPS
Corporation, S402 Water Tite; Cherne, Part No. 270-245-Bell;
Cherne, Part No. 270-296-4" J.D. .
317(h) Dry Ditch Required. The contractor will install the water,
sanitary sewer, or foundation drain service lines in a 'dry ditch'.
If necessary, the contractor shall over-excavate, furnish and place
1" concrete stone and provide necessary pumping equipment to
maintain dry working conditions. Under no conditions shall the
contractor discharge surface or groundwater to the sanitary sewer
system or install water or sanitary sewer service lines in standing
water unless on-site authorization is given by the inspector. The
generally accepted understanding of a "dry ditch" is a work area
without standing water and without flowing mud. Failure to have
or provide adequate dewatering equipment shall not be accepted as
justification for waiver of the 'dry ditch' requirement.
(13) Amend Section 318(8) UPC by adding subsections (a), (b) and (c)
as follows:
318(8)(a) No building moved into the city shall be connected to
the city sewer or water system until the plumbing in such building
has been inspected by the plumbing inspector and found in compli-
ance with this chapter.
(b) When a building is moved from one location to another within
the city, no additional plumbing work or connection to the sanitary
sewer or water utility will be done until the plumbing in said
building has been reconstructed to comply with this chapter and
tested.
(c) When an area is annexed to the city, buildings in the an-
nexed area will not be connected to the city water and sewer ser-
vice until the plumbing of the building is inspected and brought
into compliance with the requirements of this chapter.
(14) Amend Section 320 UPC by adding a new paragraph as follows:
Service Line Abandonment. Whenever an individual service line is
permanently abandoned, the service line shall be physically discon-
nected as described below. The service shall be considered to be
abandoned when a permit is issued for a new or replacement ser-
vice for that property. Service shall also be considered to be
abandoned when a service has been inactive or unused for six
months, unless an extension is granted in writing by the City.
The service line shall be physically disconnected within 30 days
after abandonment. The water service shall be disconnected at
the corporation cock on the main. Sanitary sewer and foundation
drain service lines shall be disconnected at the curb on paved
streets with a manufactured plug. All service abandonments shall
be inspected by the Engineering Division of Public Works.
(15) Delete Section 401 UPC and insert in lieu thereof the following:
21-9 Mar. 19, 1993
(a) Drainage piping shall be cast iron, copper, brass, ABS
PVC, or other approved materials having a smooth and uni-
,
form bore. If ABS or PVC is used, no horizontal branch
shall exceed 25 feet in developed length.
(b) Drainage fittings shall be of cast iron, brass, copper, ABS,
PVC, or other approved materials having a smooth interior
waterway of the same diameter as the piping served and all
such fittings shall conform to the type of pipe used.
(16) Amend Section 406 UPC by adding a new subsection (1) as fol-
lows:
Cleanouts shall not be more than 40 feet apart in horizontal drain-
age lines of 2 inches in diameter or less, more than 90 feet of
developed length apart in lines of 3 inches or larger. There shall
be an entrance cleanout. A cleanout shall be provided in each
vertical waste or soil stack at a point at least 42" above the base
of the stack.
(17) Amend Section 407 UPC by deleting this phrase from the end of
the section: ", when first approved by the administrative authori-
ty." and add this sentence to the end of the section: "Slopes of
less than one-eighth of an inch per foot may be approved by the
administrative authority for piping four inches or more in diame-
ter."
(18) Amend Section 409 UPC by deleting the exception to subsection
(j) : which reads "EXCEPTION: In single-family dwellings, sumps
to which no fixtures except one floor drain are connected and
which receive only laundry wastes or basement drainage need not
be airtight or vented."
(19) Table 4-3. Delete the reference to footnote 3 for one and one-half
inch vent piping.
(20) Amend Section 409 UPC by adding new subsections (m) and (n) as
follows:
409(m) A backwater valve shall be installed in the building drain.
It shall be located immediately following the entrance cleanout.
No pipe fittings shall be placed between the cleanout and the
backwater valve.
(n) In buildings, a 3" floor drain shall be installed on the
lowest floor.
(21) Amend Section 502 UPC by revising subsection (a) and adding a
new subsection (c), as follows:
502(a) No vents will be required on a downspout or rain leader
trap, a backwater valve, a subsoil catch basin trap, a three-inch
basement floor drain, or a water closet provided its drain branches
into the house drain on the sewer side at a distance of five feet
or more from the base of the stack and the branch line to the floor
drain or water closet is not more than twelve feet in length.
21-10 Mar. 19, 1993
(c) In single- and two-family dwellings, no vent will be required
on a two-inch basement P trap provided that it drains into a prop-
erly vented house drain or branch which is three inches or larger
in diameter (except for a water closet branch) on the sewer side at
a distance of five feet or more from the base of the stack and the
branch to the P trap is not more than eight feet in length. In
buildings of one interval, where only a lavatory sink or a urinal
empties into the stack, the five-foot distance from the base of the
stack does not apply.
(22) Amend Section 503 UPC by adding this sentence after the first
sentence in (a)(2) : If ABS or PVC is used, no horizontal branch
shall exceed 25 feet in developed length.
(23) Amend Section 504(a) UPC to read as follows:
(a) The size of vent piping shall be determined from its length
and the total number of fixture units connected thereto, as
set forth in Table 4-3 of this Code. Each building shall have
a vent stack or main vent equal in size or larger than the
building sewer. The vent stack or main vent shall extend
through the roof undiminished in size.
EXCEPTION: In single family dwellings, a three-inch vent stack
or main vent is permitted.
(24) Amend Section 507 UPC by adding a new subsection (c) to read as
follows:
(c) A vent stack or a main vent shall be installed with a soil or
waste stack whenever back vents, relief vents or other branch
vents are required in two or more branch intervals or stories.
(25) Amend Section 604 UPC to add a subsection (c) as follows:
(c) In basements of residential construction, a standpipe receptor
for a clothes washer may discharge directly over a floor drain. A
proper air gap shall be provided.
(26) Amend Section 608(d) UPC to read as follows:
(d) No domestic dishwashing machine shall be directly connected to
a drainage system or food waste disposer without the use of an
approved dishwasher air gap fitting on the discharge side of the
dishwashing machine, or by looping the discharge line of the dish-
washer as high as possible near the flood level of the kitchen sink
where the waste disposer is connected. Listed air gap fittings
shall be installed with the flood level (FL) marking at or above
the flood level of the sink or drainboard, whichever is higher.
(27) Amend Section 613 UPC by adding a new subsection (d) as follows:
(d) The following wet venting conditions are given as examples of
common conditions in residential construction which are allowed
under this code, provided the piping sizes are maintained as re-
21-11 Mar. 19, 1993
quired by other sections of this code and the wet vented section is
vertical.
(A) Single bathroom groups. A group of fixtures located on the
same floor level may be group vented as limited below:
1. Two fixtures with a combined total of four or less fix-
ture units may be drained into the vent of a three-inch
water closet drain.
2. One fixture of two or less units may drain into the vent
of a one and one-half inch bathtub drain.
3. Two fixtures of two or less units each may drain into the
vent of a two-inch drain serving two or less bathtubs
providing that they drain into the vent at the same
location.
(B) A single bathroom group of fixtures on the top floor may be
installed with the drain from a back-vented lavatory serving
as a wet vent for a bathtub or shower stall and for the water
closet, provided that:
1. Not more than one fixture unit is drained into a one and
one-half inch wet vent and not more than four fixture
units drain into a two-inch wet vent.
2. The horizontal branch shall be a minimum of two inches in
diameter. The horizontal branch may connect to the
water closet drain.
(C) A common vent may be used for two fixtures set on the same
floor level but connecting at different levels in the stack
providing that the vertical drain is one pipe size larger than
the upper fixture drain, but not smaller than the lower fix-
ture drain.
(D) Where 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 prescribed distance, the fixtures may
have a common soil or waste pipe and common vent. Water
closets having a common soil and vent pipe shall drain into
the stack at the same level.
(E) Basement water closets or floor drains in one and two family
dwellings may be vented by a two-inch drain from a first floor
sink or lavatory.
21-12 Mar. 19, 1993
(28) Amend Table 7-1 UPC pertaining to Trap Arms to read as follows:
Trap Arm Distance Trap to Vent
Inches Feet Inches
1-1/4 5 0
1-1/2 6 0
2 8 0
3 12 0
4 and larger 12 0
(29) Amend Section 909 UPC pertaining to Shower Stalls as follows:
(a) By adding this sentence to the end of the first paragraph
subsection 909(e)(2) UPC:
Shower subpans or linings constructed of asphalt impregnated
roofing felt shall not be permitted.
(b) By deleting the third paragraph of subsection 909(e)(2) UPC
which reads as follows:
Non-metallic shower sub-pans or linings may be build-up on
the job site of not less than three (3) layers of standard grade
fifteen (15) pound (6.8 kg) asphalt impregnated roofing felt. The
bottom layer shall be fitted to the formed sub-base and each suc-
ceeding layer thoroughly hot mopped to that below. All corners
shall be carefully fitted and shall be made strong and watertight
by folding or lapping, and each corner shall be reinforced with
suitable webbing hot-mopped in place. All folds, laps, and rein-
forcing webbing shall extend at least four (4) inches (101.6 mm) in
all directions from the corner and all webbing shallb e of approved
type and mesh, producing a tensile strength of not less than fifty
(50) pounds per inch (0.9 kg/mm) in either direction. Non-metallic
shower sub-pans or linings may also consist of multi-layers of
other approved equivalent materials suitably reinforced and care-
fully fitted in place on the job site as elsewhere required in this
section.
(30) Amend Section 1003 UPC as follows:
(a) To subsection 1003(b) UPC, add the following:
The requirements of this subsection shall not become effective
until January 1, 1993, except by local ordinance. Local
ordinances shall specify certification requirements for
backflow assembly testers.
(b) To section 1003 UPC, add the following subsection (u) :
(u) The provisions of Iowa Administrative Code
§641-25.5(135), Backflow Prevention with Containment,
are adopted as set forth below.
641-25.5
21-13 Mar. 19, 1993
Backflow prevention with containment. Cities of 15,000
population or greater shall enact a backflow prevention
program with containment by January 1, 1996. The
minimum requirements for a program are given in 25.2(1)
through 25.5(5) . These requirements are in addition to
the applicable requirements of subsection 1003 of the
Uniform Plumbing Code, 1991 Edition.
25.5(1) Definitions. The following definitions are added to
those in Chapter 1 and Section 1003 of the Uniform Plumbing
Code, 1991 Edition or are modified from those definitions for
the purposes of 25.5 only.
a. Administrative Authority. The Administrative Au-
thority for this rule is the City Council and its desig-
nees.
b. Approved backflow prevention assembly for contain-
ment. A backflow prevention assembly which is listed
by the University of Southern California-Foundation for
Cross Connection Control and Hydraulic Research as
having met the requirements of ABSI-AWWA Standard
C510-891 "Double Check Valve B ackflow-Prevention Assem-
blies" or ANSI-AWWA Standard C511-89, "Reduced-Pres-
sure Principle Backflow-Prevention Assemblies" for con-
tainment. The listing shall include the limitations of
use based on the degree of hazard. The backflow pre-
vention assembly must also be listed by the International
Association of Plumbing and Mechanical Officials.
C. Approved backflow prevention assembly for contain-
ment in a fire protection system. A backflow prevention
assembly to be used in a fire protection system which
meets the requirements of Factory Mutual Research Cor-
poration (FM) and Underwriters Laboratory (UL) in
addition to the requirements of 25.5(1)(b) .
d. Containment - Containment is a method of backflow
prevention which requires a backflow prevention assem-
bly on certain water services. Containment requires that
the backflow prevention assembly be installed on the
water service as close to the public water supply main as
is practical.
e. Customer. The owner, operator or occupant of a
building or property which has a water service from a
public water system, or the owner or operator of a pri-
vate water system which has a water service from a
public water system.
f. Degree of hazard. The rating of a cross connection
or a water service which indicates if it has the poten-
tial to cause contamination (high hazard) or pollution
(low hazard) .
21-14 Mar. 19, 1993
g. Water service. Depending on the context, water
service is the physical connection between a public water
system and a customer's building, property or private
water system, or the act of providing potable water to a
customer.
25.5(2) Proposed water service.
a. No person shall install, or cause to have installed,
a water service to a building, property or private water
system if it is found that contamination nor pollution of
the public water supply could occur unless the water
service is protected by an approved backflow prevention
assembly for containment.
b. The Administrative Authority shall require the sub-
mission of plans, specifications and other information
deemed necessary for a building, property or private
water system to which a water service is proposed.
The Administrative Authority shall review the information
submitted to determine if cross connections will exist
and the degree of hazard.
C. The owner of a building, property or private water
system shall install, or cause to have installed, an
approved backflow prevention assembly for containment
as directed by the Administrative Authority before water
service is initiated.
d. Reconstruction of an existing water service shall be
treated as a proposed water service for the purposes of
614.24-5, IAC.
25.5(3) Existing water services
a. The Administrative Authority shall publish the stan-
dards which it uses to determine the degree of hazard for
a water service. These shall be consistent with stan-
dards published by the Iowa Department of Public Health.
b. Each customer shall survey the activities and pro-
cesses which receive water from the water service and
shall report to the Administrative Authority if cross
connections exist and the degree of hazard.
c. The Administrative Authority may inspect the plumb-
ing of any building, property and private water system
which receives water service to determine if cross con-
nections exist and the degree of hazard.
d. If, based on information provided through
24.5(3)"b" and "c", the Administrative Authority deter-
mines that a water service may contaminate the public
water supply,the Administrative Authority shall require
21-15 Mar. 19, 1993
that the customer install the appropriate backflow pre-
vention assembly for containment.
e. If a customer refuses to install a backflow preven-
tion assembly for containment when it is required by the
Administrative Authority, the Administrative Authority
may order that water service to the customer be discon-
tinued until an appropriate backflow prevention assembly
is installed.
24.4(4) Backflow prevention assemblies for containment.
a. Backflow prevention assemblies for containment shall
be installed immediately following the water meter or as
close to that location as deemed practical by the Admin-
istrative Authority.
b. A water service determined to present a high hazard
shall be protected by an air gap or an approved reduced
pressure principle backflow prevention assembly.
c. A water service determined to present a low hazard
shall be protected by an approved double check valve
assembly or as in 24.4(5)"b."
(31) Amend Section 1004 UPC pertaining to Water Distribution Materials
to read as follows:
(a) Water pipe and fittings shall be of brass, copper, cast iron,
or other approved materials for water distribution inside of a
building.
This section does not apply to yard sprinkler systems.
See new section 1010 for water services outside the building.
(32) Amend Section 1007 UPC pertaining to Water Pressure as follows:
(b) The first sentence of Section 1007(e) shall read: Relief
valves located inside a building shall be provided with a drain,
not smaller than the relief valve outlet, of galvanized steel or
hard drawn copper or CPVC piping and fittings and shall not
extend from the valve to the outside of the building.
(33) Amend Section 1008 UPC pertaining to Water Service Installation by
adding to the end of subsection (a) the following:
All water service yard piping shall, whenever feasible, be no less
than five feet below the surface of the ground.
(34) Amend section 1009(h) UPC by adding:
An assumed pressure range of 30-45 psi will be used for Table
10-2.
21-16 Mar. 19, 1993
Maximum Number of Water Meter Sizing
Fixture Units as
Determined from Normal Operating Meter Size*
UPC Table 10-1 to Flow Range Typical Residential &
Size Service Lines in gallons Commercial Applications
and Meters per minute (gpm) with Flush Tanks
29 1/4 - 20 5/8" or 5/8" x 3/4"
disc type
52 1/2 - 30 3/4" disc type
125 1/2 - 50 1" disc type
275 1 - 80 11" disc type
* Meter sizing for other specialty applications (such as
flushometer valves) or larger meter sizes shall be determined by the
Water Meter Division.
(35) Add a new Section 1010 to read as follows:
Water Suppiv System.
(A) The water supply system line shall be type K copper tubing,
cast iron, brass or PVC meeting AWWA C-900, I.P.S. 200 PSI
SIDR-7 PE3408 ASTM 2239 or equal, or other approved materi-
als. Lead or galvanized service lines and lead solder shall
not be allowed. Pipe couplings in water service lines shall
be by swedge type mechanical joints. Pipe couplings shall not
be allowed under concrete or asphalt surfaces, such as
streets, driveways, sidewalks, alleys, or floors, except a
flare coupling may be allowed provided there is a minimum
two-inch cover between the pipe and the concrete/asphalt
material. All fittings shall be long-shoulder flare fittings.
(1) Polyethylene service pipe shall be 200 PSI IPS NSF listed
high density PE3408 SIDR-7 meeting the requirements of
ASTM 2239.
Corporation stops shall be Ford Meter Box Co. F600 (111)
or Mueller Co. equivalent.
Corporation elbows shall be Ford Meter Box Co.
L06-44-G (111) . Quarter bend w/grip joint ends or
Mueller Co. equivalent.
Curb stops shall be Ford Meter Box Co. B66-444-G
0") . Quarter turn ball valve type w/grip joint ends or
Mueller Co. equivalent.
*Note: All compression couplings shall have the appro-
priate sized stainless steel insert fittings.
21-17 Mar. 19, 1993
*Note: All compression couplings shall be free of any
pipe sealing compounds.
The polyethylene to copper adaptor coupling located at
the footing shall be Ford Meter Box Co. C26-44-G (111)
or Mueller Co. equivalent.
Tracer wire shall be 14 ga. solid copper wire w/blue
jacket. The wire will be attached to the plastic pipe
with tie straps. The wire will start at the curb box,
circle the water main and return to the curb box. The
wire will be exposed at the curb box.
(B) All water service lines shall be installed at least five feet
below finish grade. If the water main and tap cannot be
buried below frost depth at any point, the trench shall be
lined with I!" thick "Blue Board" insulation or equivalent as
approved by the administrative authority. Sand backfill
material shall then be placed to a depth of one foot above the
top of pipe, then 12" "Blue Board" or equivalent will be
installed so that the entire trench width and length in the
area needing protection against freezing is insulated and then
backfilled.
(C) Water service lines of any installation shall be at least 3/4
inch in diameter. Water service lines for any commercial
property shall be at least one inch in diameter. Any water
service line 100 feet or more in length shall be at least one
inch in diameter. For service lengths of 200 feet or 300
feet, the minimum diameter shall be 14 inches and 12 inches,
respectively. It is important to note that these are minimum
diameters for service lines. Larger diameters may be required
to provide adequate service based on number of fixture
units. See Table 10-2.
(D) All taps on the main shall be at least 24 inches apart and
shall be at least 3/4 inch in size. If more than one tap is
made for a service line, the taps will be staggered on the
pipe. Maximum tap size for a 4-inch main is 3/4 inch. Maxi-
mum tap size for a 6 inch or larger main is one inch. No
more than three taps shall be made for a service connected to
a 4-inch or larger main. All taps will be made in the top
half of the water main but not more than 451 above the hori-
zontal plane. No main shall be tapped nearer than eighteen
(18) inches to a joint. Minimum size for any service valve
will be 4 inch. No 4 inch by 2 inch tapping valves will be
permitted. A 4 inch by 4 inch tapping valve and sleeve is the
smallest which may be used. The following table lists appro-
priate number of taps for different service sites.
Service Size Taps
3/4 inch 1 3/4 inch
1 inch 2 3/4 inch or 1 1 inch
21-18 Mar. 19, 1993
1-1/4 inch 3 3/4 inch or 2 1 inch
1-1/2 inch 2 1 inch
(Two or more taps shall have 24" minimum spacing and be
staggered)
All services having two (2) taps or more shall be combined
through a brass wye pipe connection. The maximum length
of service from the main to the wye shall be four (4) feet.
(E) Where a single water service line provides service to a new
duplex or is split for any other reason, the service line
shall be at least one inch in diameter. Where an existing
structure is to be converted to a duplex a 1" equivalent
service may be provided by a separate tap. The new service
lines shall be divided by a wye at the property line. Exist-
ing 1" services may be split inside the building so long as
shut offs are available in a common area. Separate curb boxes
shall be installed, and separate 3/4 inch service lines shall
be run to the individual customer units.
(F) In the event a curb box is set in any location where a con-
crete or asphalt surface is to be placed, a sleeve shall be
placed around the cap to allow for expansion and contraction.
(G) In a new subdivision the new water service line shall be
installed at the center of the property unless otherwise
approved by the administrative authority.
(H) Only one service is allowed per structure or development.
No extra service line taps into the structure or development
from the service line are permitted unless the main service
line is a 4 inch minimum size or is of sufficient size to meet
the water demands and is approved by the Board of Appeals,
except as stated in (E) above. Additional services may be
approved by the Board of Appeals.
(I) If the proprietors of buildings desire to lay pipes with
hydrants and hose couplings to be used only in case of fire,
they will be permitted to connect with the street mains, at
their own expense, upon application to the City and will be
allowed to use the water for fire purposes only, free of
charge.
W Sprinkler systems used for fire protection may be permitted to
be attached to the water mains by registered plumbing con-
tractors by direct connection without meters under the direc-
tion and supervision of the City. No open connection can be
incorporated in the system, and there shall be no valves
except a post indicator valve at the entrance to the building
which must be sealed open. One and Two family residential
sprinkler lines shall be metered through the single meter.
The property owner or tenant shall promptly report to the
City any seal which has been broken for the closing of the
system. A detailed drawing of the sprinkler system shall be
21-19 Mar. 19, 1993
filed with the City and free access to the building shall be
granted the City for inspection purposes. No charge will be
made for water used for fire purposes through a sprinkler
system.
(K) There shall be a curb cock in every service connection to the
main, lateral or extension service supply in streets. It
shall be located on the property line or as close as possible
thereto and in alleys within one foot of the alley line,
except two (2) inch and larger, which shall have a street
valve box over the valve at the water main. The curb cock
to be used for services from three-fourths (3/4) inch to two
(2) inches shall be the style known as Mueller Mark II Oriseal
or Ford Ball Valve with 901 curb cock, or equal, provided
with T handle and extension rod keyed and locked to curb
cock and shall be the same diameter as the pipe served. The
curb cock shall be kept in an operative condition at all
times.
(L) The curb cock shall be covered by a curb box of the Western
pattern No. 100, or equal, extending to the curb grade. In
cases where the surface of the ground is higher than the
curb grade to the extent that the curb box will not extend
sufficiently to be in plain view, then the curb box shall be
extended to the ground surface.
Whenever a water service is renewed the curb box shall be
brought to the curb grade or present natural ground level
and moved to the property line. In placing the curb cock in
position, care must be exercised to provide against settlement
of the curb box, by providing a base of brick, stone or
concrete block set on solid earth for support. A support
shall be placed across the ditch and wired to the curb box
near the top to keep it in a vertical position while filling
the ditch.
(M) A corporation cock of either a Mueller or Ford make, or its
equivalent, shall be inserted in every tap one inch or less in
diameter made in the water main. The connection to the main
shall be made by a regulation corporation cock and copper
service with a compression joint if the pipe is plastic SIDR-7
200 P3408. All connections to the water main shall be ade-
quately looped to prevent breakage from ditch settlement. All
joints to service pipes shall be tested in the presence of and
approved by the building official before being covered.
(N) Leaking water service connections shall be resolved in accor-
dance with Chapter 28 of the City Code.
(36) Amend Section 1101(a) UPC by adding this sentence as follows:
More than one sanitary sewer connection to a public sewer may be
allowed.
(37) Amend Section 1102 UPC by adding subsection (f) as follows:
21-20 Mar. 19, 1993
(f) All openings into the sanitary sewer piping within a building
must be securely sealed at all times by means of a manufactured
plug or seal until the building has been made completely tight
against the elements of weather and all backfilling around founda-
tions has been brought to proper grade to insure the drainage of
surface water away from the building.
(38) Amend Section 1103(a) UPC to read as follows:
(a) The building sewer, beginning from two (2) feet (.6m) from
any building or structure, shall be of cast iron, extra strength
vitrified clay pipe, or SDR 23.5 polyvinyl chloride pipe (PVC) .
PVC pipe shall conform to ASTM D-3034. PVC resin shall meet
cell class 12454B per ASTM D 1784.
VCP and cast iron shall be installed according to methods specified
in ASTMC-12. SDR 23.5 PVC shall be installed according to ASTM
D-2321. Embedment material shall meet ASTM C-33 (crushed)
gradation 67.
(39) Amend Section 1105 UPC Size of Building Sewers, to read as fol-
lows:
The size of any building sewer shall be determined on the basis of
the total number of fixture units drained by the sewer in accor-
dance with Table 4-3. The minimum diameter for a building sewer
shall be four inches.
(40) Amend Section 1106 by adding a new subsection (d) as follows:
1106(d) Building sewer depth Whenever possible the building
sewer shall be laid at a depth of not less than nine (9) feet below
street grade from the main to the property line. Renewals may be
replaced at existing depth, or lower if desired.
(41) Amend Sec. 1107 UPC by adding a new subsection (g) as follows
(g) Cleanouts shall not be more than 40 feet apart in horizontal
drainage lines of 2 inches in diameter or less, more than 90 feet
of developed length apart in lines of 3 inches or larger. There
shall be an entrance cleanout. A cleanout shall be provided in
each vertical waste or soil stack at a point at least 42" above the
base of the stack.
(42) Add a new section 1120 to read as follow:
Sanitary Sewer Service--New Subdivision Construction.
(A) This section deals with construction and inspection procedures
for installing sanitary sewer service lines where a factory
wye or factory wye and riser are already in place. In this
situation, the plumbing contractor shall start the stub-in at
the existing connection. No additional cut or tap into the
sewer main will be permitted.
21-21 Mar. 19, 1993
(B) All work will be done in a 'dry ditch'. The generally accept-
ed understanding of a 'dry ditch' is a work area without
standing water and without flowing mud. If necessary, the
plumber shall over-excavate, furnish and place 1" or smaller
concrete stone and provide necessary pumping equipment to
maintain dry working conditions. Under no condition shall the
plumber discharge surface or groundwater to the sanitary
sewer system or do any work in standing water unless on-site
authorization is given by the inspector.
(C) The sewer service line shall be pipe of 4 inch minimum diame-
ter installed at least five feet below finish grade. If the
service line cannot be buried below frost depth at any point,
the service line shall be protected in the same manner as
specified for water service lines in Sec. 21.501(29)(B), Ames
Municipal Code.
The property owner also has the option of plumbing to the
sewer main. The property owner shall retain full responsibil-
ity for operation and protection of any delivery system to the
sewer main.
(D) Any service line that is constructed with a greater than 20
percent grade shall be stepped down to the main and an-
chored as approved by the administrative authority to the
undisturbed trench bottom.
(E) Cleanouts on service lines shall be provided every 90 feet of
developed length and "just upstream" of every change in
alignment or grade greater than 451.
(F) All joints in the service line, including the first joint at
the connection to the main, shall be rootproof and waterproof.
Joints shall be fabricated using a preformed compression joint
or an equal alternative method approved by the inspector.
(G) The service line shall cross the property line at a location
such that it will be within three feet horizontally of the
curb box after the water service line is laid or as approved
by the administrative authority. Stub-ins may then diverge as
necessary after entering private property. The termination
point of the service line shall be marked at the surface with
a durable marker. There shall be an elevation marker on the
lot line so curb boxes can be placed at proper height for
locating.
(H) The entire service line trench from wye or riser to its termi-
nation shall remain open and uncovered until inspected and
approved for backfill. If the work has been backfilled or
covered for any reason including natural causes prior to
inspection, the plumber shall be required to uncover it for
inspection.
(I) After inspection, the entire service line trench shall be
backfilled by the plumber in stages as described below. The
21-22 Mar. 19, 1993
bedding and the first two feet of protective cover shall be
comprised of sand, pea gravel, or other approved material,
as directed by the plumbing inspector of the Public Works
Department, with such hand work and compaction as required
by the inspector to assure the integrity of the sewer service
line. After the protective cover is placed and approved, the
rest of the backfill within the public right-of-way shall be
placed by the plumber under the on-site inspection of the
Public Works Department. That backfill shall be mechanically
tamped so that all areas in the upper three feet and within
five feet of the proposed curb line are compacted to 95 per-
cent of the standard Proctor density and all other areas of
the excavation within the right-of-way are compacted to 90
percent of standard Proctor density. The remaining backfill
outside the public right-of-way shall also be placed by the
plumber.
(J) Final inspection of the connection and the main may be made
by TV camera filming of the full-length interior of the sewer
main at city expense.
(43) Add a new section 1121 to read as follows:
Sanitary Sewer Service--Tap into Existing Main.
(A) This section deals with construction and inspection procedures
for installing sanitary sewer service lines where a factory
wye or factory wye and riser do not exist. In this situation,
the stub-in will begin with a tap into the sewer main as
described below. The tap may be made only in the public
right-of-way or in a public easement.
(B) Under no condition shall the plumber discharge surface or
groundwater to the sanitary sewer system or do any work in
standing water unless on-site authorization is given by the
inspector. Failure to have or provide adequate dewatering
equipment shall not be accepted as justification for waiver of
the 'dry ditch' requirement.
(C) The tap into the sewer main shall be in the form of a smooth,
round hole with a tolerance not to exceed 4 inch diameter
larger than the 0.D. of the saddle spigot end. No hand
cutting or tapping methods will be allowed. Only machine
drilling will be permitted with equipment able to retain the
coupon cut from the sewer main. This coupon shall be
marked with the lot number and given to the inspector at the
time of inspection.
(D) If the sewer main is cracked or otherwise damaged during
drilling, the plumber shall replace the pipe section. Where a
pipe section must be replaced, joints must be completed with
stainless steel water main type repair clamps with ductile
lugs, at least 72 inches in length. For 8 inch main, the
repair clamp shall be designed to fit 9.27 to 9.67 inches O.D.
pipe. For 4 inch service line, the repair clamp shall be
21-23 Mar. 19, 1993
designed to fit 4.45 to 4.73 inches 0.D. pipe. No type of
flexible coupling will be allowed. The repair of the main
shall be inspected by Public Works prior to backfill.
(E) The service line connection shall be made with a cast iron
saddle tee such as Genoco Sealtite Model #DSBF sewer saddle
or approved equal specifically designed for this purpose. The
spigot end shall fit smoothly into the wall of the sewer main
and shall not protrude more than 4 inch past the inside pipe
surface. The saddle flange or collar shall be sealed to the
main with a rubber O-ring. The connection shall be secured
in place by a stainless steel strap of at least 28 gauge and
at least 22 inches width. The saddle for PVC pipe shall be as
manufactured for the type of PVC pipe being used.
(F) Building sewer connection. When the building sewer is in-
stalled in the connection fitting a root-proof, waterproof
joint shall be fabricated by the use of a preformed compres-
sion joint or poured joint acceptable to the inspector. The
entire connection fitting and building sewer joint assembly
shall remain uncovered for inspection and approval before
backfill.
(G) Factory saddle wyes will not be accepted for making new
connections to an existing sewer or for repair work.
(H) Final inspection of the connection and the main may be made
by TV camera filming of the full-length interior of the sewer
main at city expense.
(I) All sanitary sewer taps shall be made in the top half of the
main but no more than 451 above the horizontal plane. All
taps shall be made at least 18 inches apart, at least 24
inches away from any joint.
(J) All service lines shall be tapped into the main and not into a
manhole except as provided in Subsection (K) below.
(K) Any sewer line 6 inch or greater requires a manhole at the
public main. The property owner shall retain full responsi-
bility for operation and protection of any delivery system to
the sewer main. Any private sewer 8 inches or larger re-
quires a manhole every 300 feet.
Approved Materials for Sanitary Services
Service Size Material
4 inch Cast Iron, SDR 23.5 PVC,
with gaskets, copper
6 inch Extra strength
vitrified clay, cast
iron, SDR 23.5 PVC, copper
8 inch or larger Truss Pipe
Extra strength
vitrified clay pipe,
cast iron, SDR 35 PVC,
21-24 Mar. 19, 1993
copper
(L) That part of the service line trench outside the public
right-of-way shall be completely backfilled by the plumber in
stages. The bedding and the first two feet of protective
cover shall be comprised of approved material, as directed by
the Public Works Department.
(44) Delete Section 1213(a) UPC and insert in lieu thereof the follow-
ing:
All joints and fittings in a concealed gas piping system shall be
welded. Only fittings approved for a welded system shall be
used. Screw type fittings shall not be welded. Screw type fit-
tings may be used in concealed spaces only if accessibility is
provided at each fitting location. Access opening shall be of a
size that will permit a workable access to fittings requiring
repair or replacement.
(45) Section 1305 pertaining to Water Heaters is revised by adding these
sentences to the end of subsection (c) :
The over-temperature safety protection device shall be a combina-
tion pressure and temperature relief valve. The valve shall drain
indirectly into a plumbing fixture, floor drain, sump pit or other
approved point of discharge inside the building.
(46) Section 1306 pertaining to Oil Burning Heaters is revised by adding
these sentences to the end of subsection (b) :
The over-temperature safety protection device shall be a combina-
tion pressure and temperature relief valve. The valve shall drain
indirectly into a plumbing fixture, floor drain, or sump pit or
other approved point of discharge inside the building.
(47) Add a new Chapter 14 to read as follows:
Chapter 14. Foundation Drain Service
(A) Discharge Line. The discharge line shall be a pipe with a
minimum inside diameter of 12 inches. The discharge line
may be polyvinyl chloride (PVC) or polyethylene (PE) pipe.
PVC pipe shall be a minimum of Schedule 40 PVC meeting
ASTM D-2665 with solvent weld Schedule 80 deep socket fit-
tings. PE pipe shall be a minimum of PE-3408 meeting ASTM
D-2239 with joints made with ribbed insert fittings secured by
stainless steel clamps. All discharge line piping where
fittings are not visible or where there is doubt on the part
of the inspector of proper installation, shall be tested for
leakage by applying a 30 psi air pressure test for a period of
not less than five minutes. Any loss of pressure during the
test will be cause for rejecting the installed pipe and re-
quiring repair or replacement of defective parts.
21-25 Mar. 19, 1993
(B) Depth of Burial. The discharge line shall be buried to a
depth of at least 5 feet below the final surface grade. Where
that depth of cover cannot be maintained, cold weather protec-
tion in the same manner as specified for water service lines
in Sec. 21.501(29)(B), Ames Municipal Code, or by another
approved method, shall be required.
(C) Check Valve. A check valve shall be provided in the dis-
charge line, whether the discharge line flows by gravity or is
pumped. The check valve may be installed in either a vertical
or horizontal position. This check valve shall be in addition
to any check valve built into the sump pump.
(D) Electrical Service. For a sump pump to be operational, the
sump pump shall have a 20-amp circuit and 15-amp outlet.
The wire shall be 12-2 w.g. The sump pump shall have a
separate circuit. Where the fuse box lacks sufficient capaci-
ty or where other electrical deficiencies will not permit
routine hookup of electrical service to the sump pump, the
homeowner will be so informed. In such cases, additional
costs could be incurred by the homeowner to correct the
deficiencies.
(E) Connection. The discharge line shall be connected to a public
storm sewer, collector line, or storm sewer intake if such
exists adjacent to the property. The connection to the storm
sewer or collector line shall be made by machine tapping and a
manufactured fitting, or by an alternate method of an ap-
proved tap and saddle on a concrete storm sewer pipe. A
tap shall be used on all 6 inch collector lines. A sewer
tapping machine shall be used for all tile lines.
1 - The correct saddle to use to connect to a 6"-15" tile
line is a Gemco sewer saddle (B.F.O.) .
2 - The correct saddle for a collector line of 6" plastic is
a Smith Blair 313-00066-314-000 6" x 2" saddle.
3 - To connect a storm line to a concrete pipe, use a saddle
made with a cast iron hub. The pipe will extend from
the hub to the face of the pipe. Cement mortar and
oakum will be used for a water and root-proof connection
to the storm sewer.
(F) No Connection Available. If a storm sewer or collector line
does not exist in the roadway fronting the property, the
discharge line shall be terminated at the back of curb. In
the event the storm sewer/collector line is on the opposite
side of the pavement, the discharge line shall be extended
across the street. Back-of-curb discharges shall be directed
downward to the pavement by use of an elbow or other ap-
proved arrangement. The City of Ames shall be responsible
for the connection to the storm sewer/collector line for those
services properly terminated at back-of-curb.
21-26 Mar. 19, 1993
(G) Sump Pump. Delivery of the foundation water to an approved
point of disposal shall be made using an approved pump sys-
tem. The sump pump shall be able to deliver 17 gpm against
17 feet of head.
(H) Gravity Discharge. In some instances, foundation water may
be discharged to an open waterway or other natural
drainageway by gravity when approved by the administrative
authority. Under no circumstances will a gravity line be
approved without backwater control.
(I) Alternative Uses. With prior approval, the property owner
may install such piping and valves necessary to allow the
foundation water to be used for lawn or garden watering or
other such use. However, said diversion facilities shall be
in addition to the permanent connection to the storm sew-
er/collector line.
(48) Add a new chapter 15 to read as follows:
Chapter 15. Storm Sewer Service
15.1 The storm sewer service line or designed private storm sewer
shall be made of cast iron, reinforced concrete pipe (RCP),
vitrified clay pipe (VCP), SDR 35 polyvinyl chloride pipe
(PVC) , PVC truss pipe, or PVC meeting ASTM F949. PVC
pipe shall conform to ASTM D-3034. PVC resin shall meet
cell class 12454B per ASTM D 1784.
15.2 Installation requirements. Installation shall be completed in
accordance with the standard specifications governing pipe
installations as established by the Public Works Department.
a. RCP, VCP and cast iron shall be installed according to
methods specified in ASTM C-12.
b. SDR 35 PVC shall be installed according to ASTM
D-2321. Embedment material shall meet ASTM C-33
(Crushed) Gradation 67.
15.3 Storm sewer service lines may be connected to the city storm
sewer system at intakes or manholes or directly into the city
storm sewer pipe. Tapping storm sewer service lines into city
storm sewers will be by using approved methods. The con-
nection from the storm sewer service line to the city storm
sewer will be made by a clamping saddle or a fitting with a
sealant that will be waterproof and rootproof.. The entire
connection shall remain uncovered for inspection and approval
before backfill. A collar will be installed at the main so
that the service line will not protrude into the main. If a
storm sewer service line is over half the size of the city
storm sewer it will require a manhole at the junction. The
manhole shall meet City of Ames Standard Specifications for
storm sewer construction. Taps will be installed on the top
half of the city storm sewer. Clean outs shall be installed
21-27 Mar. 19, 1993
on storm sewer service lines at intervals not to exceed 80
feet of developed length and at locations where the line
changes direction more than 45 degrees. If a storm sewer
service line is installed with more than 25 percent grade, it
will be stepped down with the use of fittings.
15.4 Private storm sewer mains can be connected to the City storm
sewer system at intakes or manholes. Connecting into the city
storm sewer line with a private storm sewer main requires
installation of a manhole or intake at the junction. The
manhole or intake shall meet City of Ames Standard Specifica-
tions for storm sewer construction. Manholes or intakes on
the private storm sewer line will be installed at intervals
not to exceed 300 feet and at all alignment and size changes.
The Municipal Engineer shall review and approve all private
storm sewer systems designs prior to the issuance of a permit
to connect the private storm sewer system to the city storm
sewer.
15.5 Permits and applicable fees are required for any storm sewer
service lines or private storm sewer systems installed on
private property.
15.6 Inspection fees for installations utilizing VCP, RCP or cast
iron will be as currently established by City ordinance.
Inspection fees for installations using SDR-35 PVC will be as
from time to time adopted by city council for full time in-
spection while the pipe and embedment materials are being
placed. Inspection fees for the embedment operation may be
waived provided a registered Engineer licensed to do business
in Iowa will certify that the pipe embedment has been complet-
ed in accordance with the ASTM D-2321 Standards.
(Ord. No. 3198, Sec. 1, 9-24-92)"
Section Eight. Violation of the provisions of this ordinance shall consti-
tute a municipal infraction, punishable as set out in Section 1.9, Ames Municipal
Code.
Section Nine. All ordinances or parts of ordinances in conflict herewith
shall be repealed to the extent of such conflict if any.
Section Ten. This ordinance shall be in full force and effect on April 1,
1993, from and after its passage and publication as required by law.
Passed this 23rd day of March 1993.
Cam, L,
c
Sandra L. Ryan, City Clerk Larry Curtis, yor
0231
21-28 Mar. 19, 1993