Troughed/Butterfly Roof - ASCE Wind Loads

[bones206]

Any ideas how to develop wind loads for this type of roof using ASCE provisions? ASCE 7-16 explicitly covers this roof type for open buildings, but not if the building has walls.

I was thinking about adapting design pressures from two back-back, mirrored monoslope buildings, but I'm not sure that would give realistic loadings.

 

[HTURKAK]

My opinion is , this approach will underestimate the wind load. I think you want to use the coefficients at ASCE 7-16 ,FIGURE 27.3-1. Still imo, the use of coeff. for roof type for open buildings should be considered .

EC's are law resource at Eurozone and one can access to the the following doc. free of charge. Pls look o the pp44&45 of the following doc.

https://www.phd.eng.br/wp-content/uploads/2015/12/en.1991.1.4.2005.pdf

............

He is like a man building a house, who dug deep and laid the foundation on the rock. And when the flood arose, the stream beat vehemently against that house, and could not shake it, for it was founded on the rock..

Luke 6:48

 

[bones206]

The open building pressures would certainly be conservative. It's strange that ASCE has this roof type for open structures but not enclosed structures.

I see that the Eurocodes do include this roof type, but I'm not sure I can make any use out of it for projects in USA.

 

[bones206]

I ended up treating this as a monoslope building. I figure the wind pressure dynamics at the roof do not change dramatically between a monoslope and trough. The only modification I made to the ASCE procedure is assuming both wind directions were windward, acting at the high side of the building.