Plumbing Flashcards
1
Q
What is the minimum required slope for horizontal drainpipes?
A
¼ inch per foot for pipes ≤ 2 inches, and ⅛ inch per foot for pipes > 2 inches.
2
Q
What is the purpose of a P-trap in a plumbing system?
A
To prevent sewer gases from entering the home by holding a water seal.
3
Q
How far should a toilet be from side walls or other fixtures?
A
Minimum 15 inches from the center of the toilet to any side obstruction.
4
Q
What is the minimum water pressure required for a residential home?
A
40-60 psi, with 80 psi being the maximum before requiring a pressure regulator.
5
Q
What is the purpose of a TPR (temperature-pressure relief) valve on a water heater?
A
To release excess pressure and prevent the tank from exploding.
