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#1
05-18-2010, 08:50 PM
 Unregistered Guest Posts: n/a
How to calculate linear inches in pipe

If it is 16 diameter pipe I need calculate linear inch of opening 16length 16inch width
#2
05-18-2010, 09:18 PM
 Robert Fogt Administrator Join Date: Dec 2005 Location: Seattle, WA Posts: 3,467 Rep Power: 13
Re: How to calculate linear inches in pipe

Not quite enough information supplied. Is it the circumference of the opening you need?

Linear distance is distance as if the object was along a straight line, without any care to the width or height.

Usually that would be the length of the pipe, but you mentioned the opening so that may need more explanation.
#3
05-18-2010, 09:26 PM
 Unregistered Guest Posts: n/a
Re: How to calculate linear inches in pipe

it is circumference of 16inch pipe
need calculate in linear inch for cutting
I got 16 inch length by 16inch width with STD wt
#4
05-19-2010, 03:10 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,538 Rep Power: 19
Re: How to calculate linear inches in pipe

Quote:
 Originally Posted by Unregistered it is circumference of 16inch pipe need calculate in linear inch for cutting I got 16 inch length by 16inch width with STD wt
Circumference is pi times diameter.
Pi is an irrational numbner (infinite number of decimal digits) but is approximately 3.14159. Circumference is 3.14159 x 16", or about 50.27 inches.
#5
05-19-2010, 07:27 AM
 Unregistered Guest Posts: n/a
Re: How to calculate linear inches in pipe

Thanks John for response
just want to be more clear
for example if size 12in STD wt but length is 16 in
they want cut half of diameter and calculate by linear inch
how to calculate it ?
#6
05-19-2010, 01:48 PM
 Dirtman Senior Member Join Date: Dec 2008 Posts: 157 Rep Power: 6
Re: How to calculate linear inches in pipe

Quote:
 Originally Posted by Unregistered Thanks John for response just want to be more clear for example if size 12in STD wt but length is 16 in they want cut half of diameter and calculate by linear inch how to calculate it ? Thanks in advance
I'm confused!

Pipe weight (related to wall thickness) shouldn't be a factor unless the annulus centerline is needed. I can't imagine you need that.

Are you asking about diameter of the pipe when you say length?

12" Std pipe actually has an outside diameter of 12.75 in., but it can be 40 ft long. The circumference of 12.75 in. diameter pipe is: 12.75 in. * PI = 40.055 in. Half the circumference would be 20.027 in.

Or . . . are you asking about the circumference of an ellipse?

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