+Mill Tol % / Wl / Ovality % - CAESAR II - Help

CAESAR II Users Guide

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CAESAR II
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CAESAR II Version
13

+Mill Tol %

Specifies the positive mill tolerance. This option is only enabled when IGE/TD/12 is active. It is used when the Base Stress/Flexibility On option of the Special Execution Options is set to Plus Mill Tolerance. In that case, piping stiffness and section modulus is based on the nominal wall thickness increased by this percentage. You can change this value on an element-by-element basis. The software defaults to a value of 12.5.

Wl

For the B31.1 and B31.3 piping codes, specifies the weld strength reduction factor (Wl), to be used in the minimum wall calculation for straight pipe.

Ovality %

For the DNV 2017 piping code, specifies the percentage of pipe ovalization. DNVGL-ST-F101 addresses the minimum and maximum allowable percentages of ovalization of piping to prevent collapse. The software defaults to a value of 0.5.