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Author:
cbstriper (MD)
how many 2 inch pipes does it take to equal a cross sectional area of a 4 inch pipe? and can you tell me the furmula for calculting cross sections?
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Author:
hj
Four. For comparison calculations, all you have to do is square the pipe sizes, and then compare the two answers. Two inch squared is four, four inch squared is sixteen. Sixteen divided by four equals FOUR. There are other ways to do the same thing, but this is usually the easiest.
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Author:
cbstriper (MD)
Thank you! That is what I was leaning towards but just needed to make sure. I am studying for the maryland masters and it has been a long time 30 + yrs since I have had to study like this.
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Author:
jimmy-o (CA)
cross section area of a pipe is 3.14 X radius squared. So a 2 " pipe has a cross section of 3.14 sq inches, and a 4 " pipe has a cross section of 12.56 sq inches.
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Author:
hj
Pi, 3.1416, is a constant, so for comparison purposes it cancels out and is irrelevent for the computation. Only when you need that ACTUAL area does it become a factor.
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