Tentamen (uitwerkingen)
Plumbing Red Seal Questions & Answers!!
- Vak
- Instelling
Trap arms and fixture drains are to be installed with roughly _____ of an inch downward slope for every foot of trap arm length - ANSWER 1/4" per foot less than 3" - 1/8" per foot 4" and higher What can put a great deal of stress on your neck, shoulders, back, and legs when lifting heavy objects...
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