Choose a method
The quickest first. Each opens with a first page for the job: units, code edition and which checks to run.
- 01Legs: hand checks + WRC 537 + shell model
Vessel on leg supports
Legs welded to the shell, the bottom head or cone, or across the junction: Moss Chapter 4 leg, base plate and bolt checks; the attachment by WRC 537 or FEA.
- 02Horizontal on lugs: shell model
Horizontal vessel on lug supports
A horizontal vessel on 2 or 4 support lugs on its sides, as one shell model: stress round each lug, the load share, and a hand check of each lug.
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Use it for
- 01Legs on the shell, coped at a junction, or wholly on a head or cone; leg, base plate and bolts by Moss Chapter 4.
- 02Top platform legs on a head or a cone junction.
- 03A horizontal vessel on 2 or 4 side lugs: how they share the weight, and the stress round each.
- 04Wind, seismic and longitudinal loads, with one station free to slide.
In pictures
Fig. 2 · A horizontal vessel on support lugs 
Fig. 3 · A lug on the shell, FEA
How it works
Method notes: Rigging and lugsWorked examplesQuick reference
