CAESAR rèport "0" in some effort. I understand that compared to compression alone. CAESAR Why does a comparison to compression?, Caesar adopted despite efforts to overcome the yield stress?

karlos

B31.11 addresses piping in two states "restrained" and "un-restrained". The "stress equations/load cases" are different for each state. When a particular stress equation doesn't apply to a particular "state", we report a zero.

In the particular case of buried pipe, CAESAR repot:

NO CODE STRESS CHECK PROCESSED: LOADCASE 36 (OPE) W+D3+T2+P2
Highest Stresses: ( KPa ) LOADCASE 36 (OPE) W+D3+T2+P2
OPE Stress Ratio (%): 0.0 @Node 12801
OPE Stress: 1188260.4 Allowable: 0.0
Axial Stress: 203105.0 @Node 12801
Bending Stress: 985155.4 @Node 12801
Torsion Stress: 0.0 @Node 10501
Hoop Stress: 259248.9 @Node 10501
3D Max Intensity: 1186357.1 @Node 12801

Code stress >>> Sy (API 5L X65, 0.438" thk)

Then:

Does that mean the value obtained?
How to interpret this value?
Should I ignore it because the B31.11 does not check?
Is the pipeline in traction(>>Sy)?


And case SUS:

CODE STRESS CHECK FAILED : LOADCASE 31 (SUS) W+D2+P2
Highest Stresses: ( KPa ) LOADCASE 31 (SUS) W+D2+P2
CodeStress Ratio (%): 448.1 @Node 12801
Code Stress: 1084469.1 Allowable: 242006.0
Axial Stress: 181717.5 @Node 12801
Bending Stress: 902751.7 @Node 12801
Torsion Stress: 0.0 @Node 10501
Hoop Stress: 259248.9 @Node 10501
3D Max Intensity: 1082550.5 @Node 12801

I undestand in compression. It is correct?

Regards
___________
Karlos