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1/4 inch per foot.

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Q: What should 3 inch drain pipe drop per inch?
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What should 6 inch drain pipe drop per inch?

1/8" per foot.


You are working with a 3 inch PVC drain pipe and a 3 inch PVC flange and there is too much play as you insert the flange into the drain pipe?

Probably the wrong size flange. Is the flange a toilet collar? If so the pipe is probably 4 inch.


What the equivalent fraction for a 1 percent grade on a drain?

1% = 1/100 means 1 inch drop over 100 inches of drain pipe that is slightly more than 8 feet 1 in drop over 8 ft 4 in


Is there a required minimum pipe size for a shower-tub drain?

1-1/2 inch drain for above grade and 2 inch drain for below grade. Most UPC-based codes (IAPMO) require 2 inch above and below grade.


4 inch drain pipe water flow in gpm?

100


How much drop required for a drain pipe?

Depending on the type of drain pipe referred to, "Yes", it can have too much drop or "fall". Specifically sewer drains, as too much drop allows the liquids to leave the solid material behind, causing a blockage. The water outruns the solids.


What size of drain do you need if you tie 2 bathroom sinks into 1 drain line?

a 3 inch pipe


How far from the wall does a toilet drain go in the floor?

12-13 inches to the center of the drain.... make sure your drain pipe is 1/4 inch drop per foot. also use the sweeping y drain if possible. leave lots of room for the flange. mount the toilet after the floor is in.


Is it possible to cut or clear out tree roots out of a 2 inch drain pipe?

yes


What would make your two-inch drain pipe overflow when your washing machine drains?

your drain has a restriction in line and needs to be snaked


Will inch and a half pipe have enough run off for a shower drain?

Absolutely NOT you 2" minimum


What side of the toilet drain should the vent be on up stream or down?

downstream of a closet bend within 8 ft for three inch pipe and 10 feet for 4 in pipe at least half the size of the drain... unless it is stack vented then it would be full size of the stack right