scaffolding coupler capacity if its partially in contact with sea water

khurram ali

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one of our clients required scaffolding for Boat landing for an offshore platform, I have submitted the design in a normal manner, like designing it for medium duty (2.4 KN/m2) , but the client engineer wants to check it for seawater slam forces and check coupler capacity if its get wet.

During high tied Scaffolding may submerge in water, not completely, but partially, Does anybody guide how scaffolding design if it's submerged in water?
When scaffolding is submerged in water couplers get wet, which reduces friction between the tube and coupler, so how much will it reduce, is there any test from which we can find its capacity?

no person will work during high tied obviously, but our concern is that scaffolding should bear wave forces so that it can be used after tied gets low

i did some calculations for slam forces, appreciate if someone review and give valuable feedback specially on coupler capacity

thank you
 

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