BARLOW’S FORMULA

The Barlow formula for internal pressure that a pipe can withstand to its dimensions and the strength of its materials is P=(2*t/D), Where

  • P = pressure
  • S = allowable stress
  • t = wall thickness
  • D = outside diameter
P (pressure):

psigS (allowable stress): psi.

t (wall thickness): in.

D (outside diameter): in.

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