1/4 inch per foot.
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
Wouldn't recommend it as things may back up in the drain line. 4" line is the norm ... you want to get rid of waste, not keep it around longer.
With large diameters like that you will most probably need to insert a weld-on 12 inch - 10 inch reducer at the point where the reduction is required. The pipe and reducer perimeter edges should be bevelled, say 45 degrees, for good weld penetration especially if the pipe conveys fluid under pressure.
The volume of a 12 inch x 12 inch pipe is: 1,360 cubic inches
1/8" 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.
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% = 1/100 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
100
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.
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.