Pocket Guide to Flan..

5. Always measure pipe within tenths of an inch. Mea-
sure the entire length of pipes, including couplings
and threads.
Calculations to Use
If the outside diameter (OD) and the wall thickness of a
pipe (t) are known, then you may calculate the weight per
foot with the following equation:
Weight per foot = 10.68 x (OD-t) x t
Example: What is the weight per foot of a 3-in. pipe
with a .216-in. wall thickness and an OD of
3.500 ins.? Using the equation,
Weight per foot = 10.68 x (3.500 - .216) x .216
= 7.58 Ibs/ft
Another method to determine weight per foot of pipe
where the outside diameter and wall thickness are
known is called the Baiamonte plate method. It is based
on a square foot of plate 1 inch thick weighing 40.833
Ibs, and uses the following equation:
Wei0 t 0er ,oot = 2 t) xTrxt
Example: What is the weight per foot of an 8-in. pipe
with a wall thickness of .322 in.? Table 3-1
81