3 wall thickness grades for copper pipes
M, L and K
4 different pipe classifications
Cast iron, galvanized, copper and plastic
Different gases used for copper sweating
Propane and mapp gas
When joining a copper pipe with a galvanized pipe you must put what I between them
Dielectric Union
When using pex pipe a 90• directional change requires what
Guide fitting
Minimum diameter of a vent pipe is
1 1/4
If a waste pipe is 1 1/2” in diameter how big must the vent pipe be
Bigger than 3”
Toilet area dimensions
15” left and right 12” to the rear
What should be done to horizontal faced drain lines
They should drop 1/4” every foot
What determines the size of a septic tank
Not the number of occupants but the amount of bedrooms or waste/water gal a day
When venting 2 toilets what size must the vent pipe be
3”
For pvc drain systems what is the Y shaped fitting that is capped off called
Clean out
