RNPCP - CHAPTER 13 JOINTS AND CONNECTIONS

25.4mm - Minimum depth to be filled with molten pig lead.

3.2mm - Extension of the finished joint below the rim of the hub.

Schedule 80 - Minimum wall thickness of threaded plastic pipe.

19mm - Minimum thickness of exposed wiped surface on each side of a wiped joint, and at least as thick as the material being joined.

0.2% or 0.002 - Maximum lead content allowable for solders and fluxes in potable water piping.

Schedule 80 - Job-Fabricated female screws.

76mm to 102mm - Enlargement of closet bend from _____ shall be considered an obstruction.

Caulked joints - for bell-&-spigot Cast Iron Soil (CISP) & other similar joints shall be firmly packed with oakum or hemp & filled with pig lead to a depth of not less than 25.4mm.

Threaded joints - for Iron Pipe Size (IPS) pipe & fittings shall be standard taper pipe threads. Threaded Plastic Pipe shall be Sch.80 min. wall thickness.

Wiped joints - joints in lead pipe fittings or between lead pipe or fittings & brass or copper pipe, ferrules, solder nipples or traps shall be full-wiped lead joints. Wiped lead joints shall have an exposed surface on each side of a joint not less than 19mm & at least as thick as the material being joined.

Solder & Sweat joints - joints in copper tubing shall be made by the appropriate use of approved brass or copper fittings. Solders & fluxes with a lead content which exceeds 0.002 are prohibited in piping systems used to convey potable water.

Flared joints - for soft copper water tubing

Cement Mortar joints - except for repairs & connections to existing lines constructed with such joints such joints prohibited on new building sewers.

Burned Lead joints - shall be fused together to form a uniform weld at lest thick as the lead sheets being joined.

Asbestos Cement Sewer Pipe joints - shall be a sleeve coupling of the same composition as the pipe or of other approved materials, and sealed with neoprene rubber rings or joined by approved type compression coupling

Mechanical joints - shall be for Centrifugal Cast Iron water pipe.

Molded Rubber Coupling Joints - joined by means of molded neoprene rubber coupling joints. Neoprene rubber shall be used in soils subject to oil intrussion.

Elastomeric Gasketed & Rubber-ring Joints - shall conform to IAMPO (International Association of Plumbing & Mechanical Officials) Installation Standard. Neoprene gaskets are recommended for oil handling piping works.

Pressure-Lock Type Connection - a mechanical connection which depends on an internal retention device to prevent pipe or tubing separation. Connection is made by inserting the pipe or tubing inside the filling to a prescribed depth.

Shielded Coupling & Hubless Cast Iron Pipe joints - shall not be considered as slip joints.

Clay Sewer Pipes - shall be joined with neoprene gasket for hub & spigot joints

Screwed Pipe to Cast Iron Pipe - - shall be either caulked or threaded

Lead to Cast Iron, Wrought Iron to Steel - shall be by means of wiped joints to caulking ferrule, soldering nipple or bushing.

Copper Tubing to Screw Pipe Joints - shall be made by the use of brass adaptor fittings. Joints between copper tubing & the fittings shall be properly sweated or soldered or made with flared & screw ends adaptor fittings the connection between the treaded pipe & the fitting made with a standard pipe size screw joint.

Slip joints - may be used in fixture drains & traps.

Expansion joints - used in soil & waste stacks to provide necessary expansion & contraction joints of the pipes for high-rise buildings.

Graphite-impregnated Asbestos - Gasket Material shall be______, felt, or similar approved types.

Copper Water Tube

shall be joined by brass fittings properly soldered or brazed together.