Pipe Formulas
Pipe and Tube Equations - moment of inertia, section modulus, traverse metal area, external pipe surface and traverse internal area - imperial units
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Online Pipe Formula Calculator
The calculator is based on the piping formulas and equations below:
Moment of Inertia
Moment of inertia can be expressed as
I = 0.0491 (do4 - di4) (1)
where
I = moment of inertia (in4)
do = outside diameter (in)
di = inside diameter (in)
Section Modulus
Section modulus can be expressed as
Z = 0.0982 (do4 - di4) / do (2)
where
Z = section modulus (in3)
Transverse Metal Area
Transverse metal area can be expressed as
Am = π (do2 - di2) / 4 (3)
where
Am = transverse metal area (in2)
External Pipe Surface
External pipe or tube surface per ft of length can be expressed as
Ao = π do / 12 (4)
where
Ao = external pipe surface area (ft2 per ft pipe)
Internal Pipe Surface
Internal pipe or tube surface per ft of length can be expressed as
Ai = π di / 12 (5)
where
Ai = internal pipe surface area (ft2 per ft pipe)
Transverse Internal Area
Transverse internal area can be expressed as
Aa = 0.7854 di2 (6)
where
Aa = transverse internal area (in2)
Circumference External
External circumference can be expressed as
Ce = π do (7)
where
Ce = external circumference (in)
Circumference Internal
Internal circumference can be expressed as
Ci = π di (8)
where
Ci = internal circumference (in)
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Related Topics
- Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more
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Related Documents
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