Tag Archives: plumbing

Residential Code requirement for expansion tank

The 2012 International Residential Code (P2903.4.2) requires the installation of an expansion tank on a hot water tank where thermal expansion may cause an increase in pressure. The tank is only required when the water supply system incorporates a backflow … Continue reading

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Residential Code requirement for protection of pipes

The Residential Building Code requires the protection of pipe which is located in concealed locations.  This requirement can be found in several sections of the code including; M1308.2, G2415.7, and P2603.2.1. According to both the mechanical and plumbing sections of … Continue reading

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Residential Code requirement for water hammer arrestor

The building code* requires the use of water hammer arrestors in conjunction with appliances that use quick closing valves.  Examples of these types of appliance include; dishwashers, clothes washers, and even some refrigerators. *Note: There are two primary plumbing codes … Continue reading

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Residential Code requirement for toilet clearance

The residential building code (R307.1) (P2705.1) provides clearance requirements for bathroom fixtures in relationship to the surrounding area.  The minimum distance from the center line of a toilet to any wall, cabinet, etc. is 15” while the minimum distance in … Continue reading

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