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Foundation loads of Vertical Vessel/HEx Lugs on Supporting Structure

DeathRay009

Mechanical
Jan 7, 2024
17
Hi all,
We are in the process of ordering a Heat Exchanger. The heat exchanger is vertical and supported by two lug supports. The vendor has given us a foundation loads table. In this table the vendor has mention wind/earthquake shear and wind/earthquake moment.

I understand how the shear forces are calculated and how they will be transferred to the foundation, But I can't get my head around how the wind/EQ moment load is calculated and how it will be transferred to the foundation (since the lugs are attached to the steel structure using two bolts/lug, so that the connection is considered pinned).

Your help will be of great value in this regard.
 
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Probably just an overall moment calculated by multiplying reaction force by distance from COG
 

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