1/8" per foot.
Absolutely NOT you 2" minimum
Pipe bore is the actual minimum inside diameter of a pipe, which is not necessarily the nominal pipe size.
It depends on the pipe schedule and diameter... For example. Schedule 40 1 Inch pipe has a minimum burst pressure pressure rating of 1440PSI and an operational PSI of 270. Google can provide a complete chart. Just search "PVC Pipes - Pressure Ratings"
Plumbing pitch is the amount of fall you have on your waste. All waste, not on a pump system, has to have fall toward the destination of the waste (septic tank, sewer, etc.) The pitch is basically a downhill tilt of the pipe it requires to drain the liquid and solid waste from the pipe utilizing gravity. standard fall on a waste pipe is 1/8 of an inch per foot. the reasoning behind this is that your solid waste runs with your liquid waste minimizing clogs and optimizing drainage.
1/8 inch fall for every foot of run is the ICC code minimum, but I would prefer 1/4 inch fall.
1/8" per foot.
From various sources I gathered that the minimum fall (slope) is 1cm fall over 1m distance. Converted that is 0.125 (1 eighth) inch fall over 1 foot distance.The maximum that should not be exceeded is 1cm fall over 20cm distance. Converted that is 0.25 (1 quarter) inch fall over 4 foot distance.
Absolutely NOT you 2" minimum
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.
It really depends on your local building code, but 2% should be the minimum so that your pipe will be self-cleaning.
1/8" to 1/4" inch per foot.
For proper fall. Pipe should slope 1" for every 8'.
Foul Air
The outlet pipe needs to be a minimum of two inches and then expanding to the four inch main line
Every time! lol Seriously a 10-inch pipe is 5/4 of an 8-inch pipe
The slope of the pipe is determined by the size of the pipe and the volume expected to run through it. 2 1/2 inch or less = 1/4" per foot 3 to 6 inch = 1/8" per foot 8 inch and larget = 1/16th per foot This information is in the International Plumbing Code 2006, Table 704.1. You should check with your local building department to verify this information is applicable in your area. Hope this helps! Terry, CBO