The National Standard Plumbing Code, 2000 Edition, a copy of which is on file with the Department of Economic Development and Planning, Havre de Grace, Maryland, is hereby adopted as the Plumbing Code of the City of Havre de Grace, Maryland, for the control of plumbing practice, design and installation, including the establishment of performance criteria predicated on the need for protection of health and safety through proper design, installation and maintenance of plumbing systems. Each and all of the provisions and terms of the National Standard Plumbing Code, Chapters 1 through 16, 1978 Edition, and the 1979 Supplement to that edition, are hereby referred to, adopted and made a part hereof, as if fully set forth in this chapter, except for such changes, amendments and revisions as are specified in this chapter.
The American National Standard for Installation of Gas Appliances and
Gas Piping (NFPA 54-1980), as published by the American Gas Association, American
Society of Mechanical Engineers and the National Fire Protection Association,
a copy of which is on file with the Department of Public Works, Havre de Grace,
Maryland, is hereby adopted as the Gas Fitting Code by the Mayor and City
Council of Havre de Grace, Maryland, with the same force and effect as though
set out in full herein, except for such changes, amendments and revisions
as are specified in this chapter.
The Harford County Department of Licensing and Inspections shall administer
and enforce the provisions of the Plumbing and Gas Fitting Codes.
The following additions, corrections and/or deletions are hereby made
to the National Standard Plumbing Code (the "code") as adopted.
A.
Conformance with code. The following is to be added to
the code as new Section 1.11:
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All plumbing materials, and plumbing systems or parts thereof
installed hereafter shall meet or exceed the minimum provisions of the code.
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B.
Conformance with other regulations. The following is
to be added to the code as new Section 1.12:
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Nothing in this code shall be construed to prevent the application of
other legal requirements.
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C.
Freezing. Section 2.16 of the code is amended to read
as follows:
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Water service piping and sewers shall be installed below recorded frost
penetration but not less than below grade depth of three feet six inches.
Water, soil or waste piping is not permitted outside of a building or in an
exterior wall unless complete and proper provision is made to protect such
pipe from freezing.
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D.
Connection to water and sewer system. Section 2.19.1
of the code is amended to read as follows:
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The water distribution and drainage system of any building in which
plumbing fixtures are installed shall be connected to a public water supply
system and sewer system if available. A public water supply system or public
sewer system shall be deemed available to a premises used for human occupancy
if such a premises is within 300 feet of the public water supply or sewer
system and a connection conforming with the standards set forth in the code
may be made thereto. These premises shall be connected to the public systems
regardless of the operating condition of any private installations.
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E.
Fire rating. The following is to be added to the code
as new Section 3.3.6:
(1)
All thermoplastic pipe penetrating a fire-rated wall
or ceiling shall meet the integrity of the wall or ceiling. Conformance to
this requirement shall be evidenced by a test report from a nationally recognized
fire testing laboratory.
(2)
It shall be stated by the testing laboratory that the
plastic pipe will not spread either fire or significant quantities of smoke
from one floor to another during a two-hour fire, provided the material is
installed in accordance with the results of the test.
F.
Grease interceptors. The following is to be added to
the code as new Section 6.2.6:
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Commercial buildings. A grease interceptor shall be required in restaurants
and other similar establishments.
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G.
Permitted floor drains. The following is to be added
to the code as new Section 7.16.3:
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When approved by the administrative authority, floor drains may be installed
in basements, utility rooms, commercial kitchens, food-processing establishments,
public rest rooms, and in other locations where they may help promote the
cleanliness of the building.
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H.
Connections to boilers. The following is to be added
to the code as new Section 10.4.9:
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Potable water connections to boiler-feed water systems, in which boiler
water conditioning chemicals are introduced, shall be made through an air
gap, or the system shall be provided with an approved backflow preventer located
in the potable waterline prior to the point where such chemicals are introduced.
Boilers shall be equipped with twin check valves, and supplied with appropriate
testing arrangements in the cold water supply to the boiler. If toxic materials
are to be used in the boiler, additional protection must be installed.
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I.
Water service pipe. Section 10.10.1 is amended as follows:
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Water service pipe to point of entrance to the building shall be made
of brass pipe, copper tube or copper pipe, cast-iron water pipe, galvanized
wrought iron pipe, galvanized open-hearth iron pipe, or galvanized steel pipe,
or approved plastic pipe, tested to withstand a minimum pressure of 160 pounds
per square inch. Copper tubing, when used underground, shall not have a wall
thickness less than type "L." All threaded ferrous pipe and fittings shall
be galvanized or cement lined, and when used underground in corrosive soil
or filled ground, they shall be coal-tar enamel coated, and threaded joints
shall be coated and wrapped when installed.
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J.
Excessive pressures. Section 10.14.6 is amended as follows:
[Amended 3-5-1990 by Ord. No. 739]
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When street main pressure exceeds 60 pounds per square inch, an approved
pressure-reducing valve shall be installed in the water service pipe near
its entrance to the building to reduce the water pressure to 60 pounds per
square inch or lower, except where the water pipe supplies water directly
to a water pressure booster system, an elevated water gravity tank, or to
pumps provided in connection with a hydropneumatic or elevated gravity water
supply tank system. Pressure at any fixture shall be limited to no more than
60 pounds per square inch under no-flow conditions.
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K.
Building sewer. Section 11.2.1 is to be amended as follows:
(1)
In a trench separate from water service: If the building
sewer line is installed in a trench separate from the water service line,
the sewer pipe material shall be of either asbestos cement; cast iron; soil
pipe, bell and spigot, service weight or heavier; soil pipe, concrete or vitrified
clay or other approved material. Joints shall be watertight and root-proof.
ABS or PVC schedule 80 plastic pipe or heavier, PSM SDR 35 (PVCSP) plastic
pipe may also be used.
(2)
In a trench with water service: If the building sewer
is installed in the same trench as the water service line, the sewer pipe
material shall be durable, corrosion resistant, and so installed as to remain
watertight and waterproof. The sewer line shall be tested with a ten-foot
head of water or equivalent and found to be tight. The conditions in Section
10.6.1 shall also be met.
All gas fittings shall be done in accordance with the requirements of
the National Fire Protection Association 54-1980 and the American National
Standards Institute 2223.1 of 1980, known as the "National Fuel Gas Code."
A.
This standard code shall apply to the installation of
all types of gas appliances and to the design, fabrication, installation and
tests of all piping systems for fuel gases such as natural gas, manufactured
gas, undiluted liquefied petroleum gas-air mixtures or mixtures of any of
these gases as follows:
(1)
Low-pressure gas systems [not in excess of 1/2 pound
per square inch or 14 inches water column] extending from the outlet of the
meter set assembly, or the outlet of the service regulator when a meter is
not provided, to the inlet connections of appliances.
(2)
The installation of appliances supplied at pressure of
1/2 pound per square inch or less.
B.
Part 2 of this standard code shall apply to:
