INSTALLING PIPING MATERIAL
Roughed-in waste system piping and fittings are installed between and through the building framework. Installation is done before the exposed wall studs and floor joists are covered. Installation at this time makes it easier to rough in pipe runs.
Installing Pipe Runs through Floor Joists
Cutting joists. Use the following steps:
Use a handsaw to cut a notch in the joist. The notch can be cut at the top or bottom of the joist. The width of the notch should be slightly larger than the pipe's outside diameter. The depth of the notch cannot be larger than one quarter of the joist depth.
Use a sharp wood chisel to cut away any wood between the saw cuts.
Bracing joists. A joist with a notch cut on top is braced with a 2- by 4-inch board on each side. The boards are nailed in pace and centered under the notch. A joist with a notch cut in the bottom is braced with a steel plate centered on the notch.
Cutting a joist for a water closet bend. Use the following steps:
Installing Pipe Runs Through Wall Studs
Cutting wall studs. Always measure before cutting. Use the following steps:
Bracing wall studs. Studs with a notch cut at the top or bottom are braced with steel plates over the center of the notch.
|David L. Heiserman, Editor||
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Revised: June 06, 2015