| Applies To | |
| Product(s): | AutoPIPE Vessel |
| Version(s): | ALL |
| Area: | Calculations |
| Date Logged & Current Version |
Dec 2025 46.00.01.002 |
When there is external pressure, the program calculates the reinforcement opening using the formula from AD 2000 Section B9. However, there appears to be no explicit criterion for external pressure in this section. Since B9 is generally associated with internal pressure, should the program perform any calculation for openings under external pressure according to AD 2000?
AD 2000 Section B9 does not explicitly state that its provisions apply only to internal pressure. The section provides guidelines for reinforcement of openings without restricting its applicability to internal pressure cases. Therefore, the program correctly uses the B9 formula for calculating reinforcement openings even when external pressure is present.
See Also