| Applies To | |
| Product(s): | AutoPIPE Vessel |
| Version(s): | ALL |
| Area: | Loads |
| Date Logged & Current Version |
April 2024 44.00.01.014 |
Problem:
At what location are foundation loads calculated for a leg-supported vertical vessel?
Why do bending moment values remain unchanged when the leg support height is varied?
Answer:
AutoPIPE Vessel version 45.00.03.001 and Later:
The AutoPIPE Vessel report has been enhanced to now include bending moments and shear loads at two critical locations:
-
- Leg-to-Vessel Junction (1) : Loads and moments highlighted in yellow represent global values calculated at this junction.
- Base of the Legs (2) : Loads and moments highlighted in green are per-leg values, calculated at the base of each leg.
This improvement provides clearer insight into structural behavior at both the connection and support levels, aiding in more accurate design and analysis.
AutoPIPE Vessel version 45.00.02.004 and Previous :
In this version, foundation bending moments are calculated only at the leg-to-vessel junction. Please refer to the snapshot below for clarity on the assumptions used in these calculations.
Hence, you will not see bending moment values remain unchanged when the leg support height is varied.
It’s important to note that the support leg design is based on the loads at the leg-to-vessel junction, hence support calculations are correct.
This issue has been addressed in AutoPIPE Vessel version 45.00.03.001. The report now also includes load values at the base of the legs, providing a more comprehensive view of the structural behavior.