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Thickness of Ellipsoidal Head Under Internal Pressure:

Pressure Vessels Design and Engineering

This calculator determines the thickness of a Ellipsoidal Head Under Internal Pressure with an internal pressure applied: Typical applications are propane tanks, compressed air storage tanks etc.

The "Joint Efficiency" reflects your confidence in the welded seam areas of the as-manufactured pressure vessel.

Note: When Thickness does not exceed one-half of the inside radius, or P does not exceed 1.25SE, use the following calculator.

Design Variables:

(P) = Design Pressure(internal) (psi) =

(D) = Inside Diameter of conical portion (in.) =
of a toriconical head at point of tangency

(S) = Max. Allowable Material Stress (psi) =

(E) Lowest Joint Efficiency (80% = .80) =

Minimum required wall thickness of shell (inches) =

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