Yes. That is exactly what I used it for
Yes, it will work for both data and cable/line. You can also get the same size CPVC for less, and both will work.
More matte than gloss
The length of the coupling has no bearing on the strength of the joint s the joint can only be as strong as the pipe itself. Generally speaking, PVC when having a strain placed on it at the joint, tends to fracture at the pipe. I personally can not recall ever having seen a coupling fracture, OMHO. If installed properly I would see no problem with standard couplings and to be honest I am unaware as to whether non standard coupling are available for Schedule 40.
Tlee, thanks for the reply! Possibly? I eventually went to the store and learned that they didn't (at least in store) carry white fittings for this pipe, only black. So there's where the first part of my search went wrong!
This is a two part question. The pipe is OK for water, the most common use is to carry waste water from the dwelling to the septic tank or equivalent. I would not use it for potable water. It could be used for storing water above ground, but most people have a 65 to 300 gallon tank which collects rainwater and water is used as needed through a much smaller (1" or less) pipe to the garden.
I would choose the 4", (not 3"), pipe. I would also check that this is in compliance with local laws. If you plan to have no crawl space, bear in mind that any repair or change in the drain setup will be very hard. Also, do not neglect a heavy-duty vapor barrier above the crushed rock substrate (but below the reinforced concrete) .If you go with crawl space, allow enough height for plumbing, heating and air conditioning installation. If you choose to go with the latter, do not neglect weeping tiles around and below the lowest point of your foundation, covered by 3/4" rock extending from the foundation to about a foot, thus draining surface water away from your house.
300 PSI at 70F
find a supplier that handles schedule 80 pipe if you're concerned with crushing exposures