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Wind load on Canopy roof as per Euro Code EN 1991-1-4

Wind load on Canopy roof as per Euro Code EN 1991-1-4

Wind load on Canopy roof as per Euro Code EN 1991-1-4

(OP)
Dear All,
I have a doubt about the wind load application on canopy roof as per Euro Code EN 1991-1-4. The code tabulated the net pressure coefficients for Zones. The question is for wind direction i.e parallel to length of the canopy, is the same zone split up to be followed or no need to consider this wind direction?

RE: Wind load on Canopy roof as per Euro Code EN 1991-1-4

I'm not familiar with your Euro code; however, I have designed many canopies in the US and I would consider both the parallel and perpendicular cases, picking the worst case. In some cases the parallel case exhibits more stress on certain supporting members.

Typically the zone designations are to be considered for the wind in all directions, including oblique cases.

RE: Wind load on Canopy roof as per Euro Code EN 1991-1-4

IMO you must use other direction since wind force on columns could be different (eg. if you use IPE profiles) and you must also load the beams in perpendicular direction

Ive done mostly compressor sheds that are partially enclosed at the top on 1/2/3/4 sides so I always did wind both sides using zones according to tables.

Most of the roof for canopy is zone A anyways, and zone B and C coeff. are practially the same so I guess it wouldnt matter much (except maybe for side overhang if you have one)

I alway use blockage factor fi = 1.

Only tossing my experience if it helps :)

RE: Wind load on Canopy roof as per Euro Code EN 1991-1-4

(OP)
Thanks for your reply. In ASCE 7, for both parallel and perpendicular wind to ridge, the coefficients were given.

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