|Posted by Vince on April 10, 2004 at 23:13:45:|
|In response to Re: I am totally baffled|
: Hello, I hope someone here can help.
: I am a second year UA apprentice in NJ and one of my mechanics gave me several code questions and 3 math ones, he loves busting my Onions.
: Can anyone please give me the answers to the following as I have been looking all over and cannot find these answers.
: 1-The strainer inlet for a 3" leader line is?
: A- 7" B- 9" C- 11 " D - 14"
I'll toss you a bone...
This is under IPC so check your local code. Section 1105.1 Strainers:
Not less than 1 and 1/2 times the the area of the conductor or leader UNLESS it it is a flat roof then it is not less than 2 times the area...
now let's do our go-into-a's and look more closely at the question.
Area = pi x radius squared
so 3.1416 x 1.5 x 1.5 = 7.07 sq.inches
now take that times 1.5 and 2 because of the code requirement.
7.07 x 1.5 = 10.6
now look at the answers again and take an educated guess.
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