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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


How do you replace the trap in the drain?

You just replace it. How depends on what type of pipe. Metal pipe, the trap is usually held on with nuts that connect the trap to the sink and the main pipe. On PVC or plastic, it may be glued in place. Rarely is all the drain glued. The piece going up to the sink should have a slip joint right above the trap with a nut. There should be enough of this tube in the trap to allow you to cut the trap out and glue in another one. Cut the trap off the drain line as close to the trap as possible. The drain should be straight at this point. Glue a new one in and reconnect to the sink. The trap will drop down 1/2 to 3/4 of an inch, but there should still be enough pipe to connect. If there is not, an extension is available. Without seeing it, there is no way to give more specific directions.