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rephil34
running new drain

what is the proper way to run a 2" drain perpendicular to floor joists?
can i laminate 3/4" plywood to joists then drill 2 1/2" holes in joists?

Gizmo
Re: running new drain
rephil34 wrote:

what is the proper way to run a 2" drain perpendicular to floor joists?
can i laminate 3/4" plywood to joists then drill 2 1/2" holes in joists?

You could do it that way,make sure you pitch the pipe.

You could use these also.

http://www.google.com/products/catalog?q=2%22plumbing+hanger+pipe+straps&hl=en&prmd=ivns&bav=on.2,or.r_gc.r_pw.&wrapid=tlif130209862873310&um=1&ie=UTF-8&cid=2021989502782494744&sa=X&ei=1nKcTfTLFNCltwfq4vXWBw&ved=0CFYQ8gIwAA#

dj1
Re: running new drain

What kind and size of joists do you have?
To drill out 2.5" requires a certain joist size. Make sure you know the code.

johnofgb
Re: running new drain

Pitch is 1/8" per foot. Less and solids settle out. More and your pipe will scour out the bottom eventually.

Sten
Re: running new drain

I believe pitch is 1/4 per foot in MA., don't know about any other State.

Gizmo
Re: running new drain

[QUOTE=Sten]I believe pitch is 1/4 per foot in MA., don't know about any other State.[/QUOTE

I think 1/4" per foot is standard in a Hand Dug Out House also.

dj1
Re: running new drain

Slope required in CA is 1/4" per foot as well.

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