L x W x Pitch and calculate the average rain fall in a 10 year period
2"
not enough information. size and shape of pipe needed.
1"
typically shower drains are 2"
That would depend on the pressure huh?
At least 3 in. drain pipe
2"
depends on the size of drain piping. Most toilet either have a 3" or 4" drain. The size hole needed would be larger than the outside diameter of the piping. 3" pipe=4" hole / 4" pipe=5" hole
Any vent is usually the size of the drain or waste pipe it is connected to. 3 or 4 inch on a toilet.
a 3 inch pipe
2" VENT. Many codes say the vent can be 1/2 the size of the pipe being served but in no case less then 11/2" and considering a lead bend (toilet drain) can be 3" and the new fixtures have 1.6 GPF in lieu of the 3.5 GPF a 11/2 vent pipe is fine
not enough information. size and shape of pipe needed.
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.
1"
typically shower drains are 2"
Probably the wrong size flange. Is the flange a toilet collar? If so the pipe is probably 4 inch.
That would depend on the pressure huh?