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FEXLALifting and supportsB-01

Lifting and tailing lugs, trunnions

Upending or a level lift: the lift loads, the lug, the weld, the shackle and the shell.

Where it stops: Crane selection and the lift plan are not checked.

Two cranes lifting a vertical vessel on slings — Fig. 1 · Two cranes lifting a vertical vessel on slings

Choose a method

The quickest first. Each opens with a first page for the job: units, code edition and which checks to run.

01Quick: hand checks + WRC 537
Lifting and tailing lugs
Vertical or horizontal vessel: plate lugs and trunnions, the lug set, the weld, the shackle, the shell under the lug, report and checklist.
Open the quick check
02Detailed: shell model
Lug on the shell, finite-element model
The governing lift step on a shell model of the lug and shell, for when the hand and WRC checks come close to the limit.
Open the tool

Opening a tool asks you to sign in. The finite-element tools are free during early access and under independent verification.

Use it for

01Upending a vertical vessel with top lugs and a tail lug, or a level lift.
02Plate lugs and trunnions; the lug plate, pin hole and weld by Moss/AISC.
03Tail lug with a base ring, compression ring or strut.
04The shell under each lug by WRC 537, then the shell model when it comes close.

In pictures

Fig. 2 · Upending: top lugs and the tail lug
Fig. 3 · A tail lug on the shell, FEA
Fig. 4 · A vessel on legs, FEA

How it works

Method notes: Rigging and lugs Worked examples Quick reference

Also in lifting and supports