3" Min - 4" is Max
The man came over to my house to plumb my toilet We have a long way to go to plumb the depths of the words.
CPVC is better suited for hot water
This can be a complicated job as the toilet drain ranges from 3" -4" and a variety of materials from Plastic to cast iron to galvanized. Then there is the venting to consider and NO a shower drain CANNOT be used for a toilet discharge as the shower drain is normally 2" diameter
Use of a plumb bob a level used on plumb rather then horizontal
EMT (Electro-metallic tubing) is generally used in pipe-framed fences. This is the solid-wall conduit that electricians use, generally 1.5 to 3 inch diameter.
Reducer
For measuring 'plumb' in conjunction with a spirit level.
Circumference divided by pi equals diameter. Pi X Diameter=Circumference.
Relative roughness is a measure of the surface roughness of pipe surfaces. It is the size of the roughness scaled by the diameter of the pipe or duct. Rel Roughness=e/D; where e is the measurement of the surface roughness and D is the diameter of the pipe. It is mainly used for calculating head losses in piping systems.
A toilet that has a Back Exit hooks up to a drain pipe in the wall, and not through the floor which is most common. This is seen mainly in remodeling situations or where a wall hung toilet is used to make mopping easier.
A plumb-line can be made of steel, metal, gold or wood
Calipers are used to measure the dimension of anarticle. In measuring a section of pipe you would use an inside caliper to give the internal diameter, and an outside caliper to give the external diameter. The difference being the thickness of the pipe wall.