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a. Piping code = General
b. Pipe code to calc SIF = BS 806
Define the following options under Tools/ model options / Result ,
A. Direct Shear (N/R/A) = A (CSA-Z662 and BS8010)Note: Autopipe always considers axial and torsional stress for the General piping code and to add Direct shear stress for codes abov
B. Total stress(Oct/Max)" = O, Von Mises is required for the British code BS8010 i.e equivalent stress and CSA-Z662
C. Shear Stress :
i. BS8010:1993 - Torsional + Direct Shear (Tangential)
ii. CSA-Z662: 1999 - Torsional + Direct Shear (Tangential shear). Note: Torsional stress cannot be disabled for General pipe code hence is always consider.
D. Hoop Safety Factor, Long Safey Factor, Shear Allow.Total Allow.
Notes:
Ignore Maximum Shear Stress Ratio the System Summary report
The allowable stress for the CSA-Z662 functional + environmental load combination e.g GrT1P1+U1 will be based on the conservative riser value of 0.60 for functional load combinations therefore if any overstress in the functional + environmental load combinations manually assess if acceptable by multiplying the allowable by 0.8/0.6 (riser) = 1.33 or 1.0/0.6 for seabed piping using Pre-Autopipe 6.3 versions.
In Autopipe v6.3 , under Result Options dialog "Apply all K-factors" = checked and define functional + environmental combinations as shown in Load combinations section above.
Select a point on the riser and evaluate functional and environmental combinations e.g. Gr+P1+T1 & GR+T1+P1+U1 respectively
Evaluate axial stress = 1/2 x(sum of the longitudinal Max and min stresses)
Stress convention : +ve = tension, -ve = compression.
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