1/8" per foot.
1/4 inch per foot.
A 1.5 to 2-inch diameter pipe is typically used for a sink drain.
A 2-inch drain pipe is typically used for a shower to ensure proper drainage and prevent clogs.
A 2-inch pipe is typically used for a shower drain to ensure proper drainage and prevent clogs.
A 2-inch drain pipe is typically recommended for a washing machine to ensure proper drainage and prevent clogs.
Probably the wrong size flange. Is the flange a toilet collar? If so the pipe is probably 4 inch.
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
The recommended diameter for a 2-inch drain pipe in a residential plumbing system is typically 2 inches.
The recommended diameter for a 4 inch drain pipe in a residential plumbing system is typically 4 inches.
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.
100
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.