1/4 " per Foot minimum. At least this is what I get out of "Code Check", ISBN # 1-56158-409-6. There is a lot to Plumbing on how pipes are sized, vented and connected. This book is worth getting-I found it on E-bay for less than $10.00.
Depends how much of it you replace . Also how much flooring you remove if you can't get underneath.
To much volume based on DFU's
if you use a uncharged capacitor most likely your car battery will drain much faster using a uncarged capaciter will mess up your amp good power source is needed for your amp to give its maximum potential for deeper bass and no dimming
1.50 per square foot
An S trap would go through the floor. A P trap goes through the wall. As long as the drain is below the bottom of the sink, it should drain. Distance between the bottom of the sink, the trap and the drain does not matter, it just changes how much water stay in the drain. Normally it is just in the trap, but it can be above the trap if circumstances cause the trap to be lower than usual.
All drains slope 1/4 inch per foot, minimum. Too much slope,though, can mean pulling water out of the trap or goose neck on a toilet.
One quarter inch per foot is standard "slope". This equates to a quarter bubble on a level. If you don't have at least one eighth of an inch "slope", your drain will not work properly and will clog constantly.
With a level
One-quarter inch per foot is both the standard practice all around the country and the minimum slope (or grade) allowed by most codes. If maintaining that much slope is a problem, an exception can be requested from the administrative authority.
1 foot by 36 sq feet = 36 cubic feet of dirt is needed
A two percent (or 1:50) is considered a good slope for the drainage of lawn areas. The type of soil you have will also affect drainage. With a more sandy soil a flatter slope may be fine.
From $500 up to whatever needed depending on the conditions.
5300 gallons
No. If you think about it, upstairs toilets actually drain through the walls and down under the foundation and footings, so you would have a 100% slope there. You can have too little slope, but never too much, since gravity is actually what drains a toilet. Yes you can. Pipes that run vertical are not a problem because friction is not acting on either the solid or the liquid matter. Where a pipe is sloping steeply the water can run away leaving solid matter behind.
160 of them.
One foot
1 in 150 for each pipe is better