Plumbing Considerations

Please take the following requirements into consideration when doing residential plumbing work:
New plumbing work and parts of existing systems affected by new work or alterations shall be inspected by the building inspector to ensure compliance with the requirements of this code.

A plumbing or drainage system or part there of shall not be covered, concealed or put into use until it has been tested, inspected and approved by the administrative authority.

The water service pipe shall be of sufficient size to furnish water to the dwelling in required quantities and pressures, but in no case shall be less than ¾ inch nominal diameter.

Each dwelling unit shall be provided with an accessible main shut off valve. The valve shall be of a full way type.

Water heaters must have a shut off on the supply side.

A relief valve shall protect equipment used for heating or storing hot water.

There shall be a Clean out near the junction of the building drain and building sewer.  Such clean-outs may be installed outside of the building within 3 feet of the building wall; the accessible, minimum clearance between the cleanout and the building shall be 18 inches.

Horizontal drainage piping shall be installed in uniform alignment at uniform slopes not less than 1/4 inch per foot for 3-inch diameter and less, not less than 1/8 inch per foot for diameters of 4 inches or more.

Building shall have at least one soil stack running from the building drain up through the building, with the stack terminating outdoors above the topmost branch.

Vent stacks shall connect full size at their base to the drainage system, below the lowest fixture branch.

All vent pipes shall be sloped and connected so as to drain back to the soil or waste pipe by gravity.

All bath tubs and showers shall be equipped with control valves of the pressure balance type, the thermostatic mixing or the combination pressure balance/thermostatic mixing valve types with high limit stops, set to a maximum temperature of 120 degree F.

Floor drains shall have a waste outlet not less than 2 inches in diameter with removable strainer.
Access panel, a door or panel of sufficient size shall be installed to provide access to all pumps for repair and/or replacement.

No check or shut off valve shall be installed between a relief valve and a tank or heating equipment.  The discharge pipe shall not be smaller than the relief-valve outlet; shall not be trapped; and shall terminate with an air gap into a plumbing fixture, floor drain or other suitable point of discharge.

Upon completion of a section or of the entire water supply system, it shall be tested under air pressure of not less than 50 PSI for 15 minutes with no evidence of leakage.

Upon completion of a section or of the entire sanitary sewer system, it shall be tested under air pressure of not less than 5 PSI for 15 minutes or with 10 feet of water column with no evidence of leakage.