Page 37 - 2018_IPC

GENERAL REGULATIONS

instructions. Thermal expansion tanks shall not be supported SECTION 309
by the piping that connects to such tanks. FLOOD HAZARD RESISTANCE
TABLE 308.5 309.1 General. Plumbing systems and equipment in struc-
HANGER SPACING tures erected in flood hazard areas shall be constructed in
MAXIMUM MAXIMUM accordance with the requirements of this section and the
PIPING MATERIAL HORIZONTAL VERTICAL International Building Code.
SPACING (feet) SPACING (feet)
Acrylonitrile butadiene b [BS] 309.2 Flood hazard. For structures located in flood haz-
4 10
styrene (ABS) pipe ard areas, the following systems and equipment shall be
located and installed as required by Section 1612 of the Inter-
Aluminum tubing 10 15
national Building Code.
Brass pipe 10 10
Cast-iron pipe 5 a 15 1. Water service pipes.
Chlorinated polyvinyl chloride 2. Pump seals in individual water supply systems where
(CPVC) pipe and tubing, 1 3 10 b the pump is located below the design flood elevation.
inch and smaller
3. Covers on potable water wells shall be sealed, except
Chlorinated polyvinyl chloride where the top of the casing well or pipe sleeve is ele-
1
(CPVC) pipe and tubing, 1 / 4 10 b vated to not less than 1 foot (305 mm) above the design
4
inches and larger flood elevation.
Copper or copper-alloy pipe 12 10
4. Sanitary drainage piping.
Copper or copper-alloy tubing,
1
1 / -inch diameter and 6 10 5. Storm drainage piping.
4
smaller 6. Manhole covers shall be sealed, except where elevated
to or above the design flood elevation.
Copper or copper-alloy tubing,
1
1 / -inch diameter and larger 10 10 7. Other plumbing fixtures, faucets, fixture fittings, piping
2
Cross-linked polyethylene systems and equipment.
2.67
(PEX) pipe 1 inch and 10 b
(32 inches) 8. Water heaters.
smaller
9. Vents and vent systems.
Cross-linked polyethylene
1
(PEX) pipe 1 / inch and 4 10 b Exception: The systems listed in this section are permitted
4
larger to be located below the elevation required by Section 1612
of the International Building Code for utilities and atten-
Cross-linked polyethylene/
dant equipment, provided that the systems are designed
aluminum/cross-linked 2.67
polyethylene (PEX-AL- (32 inches) 4 and installed to prevent water from entering or accumulat-
ing within their components and the systems are con-
PEX) pipe
structed to resist hydrostatic and hydrodynamic loads and
Lead pipe Continuous 4
stresses, including the effects of buoyancy, during the
Polyethylene/aluminum/
2.67 occurrence of flooding up to such elevation.
polyethylene (PE-AL-PE) 4
(32 inches)
pipe [BS] 309.3 Coastal high-hazard areas and coastal A zones.
Structures located in coastal high-hazard areas and coastal A
Polyethylene of raised
2.67 zones shall meet the requirements of Section 309.2. The
temperature (PE-RT) pipe 1 10 b
(32 inches) plumbing systems, pipes and fixtures shall not be mounted on
inch and smaller
or penetrate through walls intended to break away under
Polyethylene of raised flood loads.
temperature (PE-RT) pipe 4 10 b
1
1 / inch and larger
4
Polypropylene (PP) pipe or 2.67 b SECTION 310
tubing 1 inch and smaller (32 inches) 10 WASHROOM AND TOILET ROOM REQUIREMENTS
Polypropylene (PP) pipe or b 310.1 Light and ventilation. Washrooms and toilet rooms
1
tubing, 1 / inches and larger 4 10
4 shall be illuminated and ventilated in accordance with the
Polyvinyl chloride (PVC) pipe 4 10 b International Building Code and International Mechanical
Stainless steel drainage Code.
10 10 b
systems
310.2 Location of fixtures and compartments. The location
Steel pipe 12 15 of plumbing fixtures and the requirements for compartments
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. and partitions shall be in accordance with Section 405.3.
a. The maximum horizontal spacing of cast-iron pipe hangers shall be
increased to 10 feet where 10-foot lengths of pipe are installed. 310.3 Interior finish. Interior finish surfaces of toilet rooms
b. For sizes 2 inches and smaller, a guide shall be installed midway between shall comply with the International Building Code.
required vertical supports. Such guides shall prevent pipe movement in a
direction perpendicular to the axis of the pipe.
20 2018 INTERNATIONAL PLUMBING CODE ®
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