GIRT DEFLECTION CALCULATION (PRE-ENGINEERING BUILDING DESIGN)

[ypzhang]

Hello everyone,

For the pre-engineering building, When we calculate the girt's deflection under the wind load,(cold formed steel and clading system) which should we use to check the deflection, L/360 or L/180?


Thank you very much!


Best regards,



Tom

 

[DaveAtkins]

If the girt gives lateral support to steel wall panels only, L/120 is acceptable.

If the girt gives lateral support to CMU, I would use L/360.

DaveAtkins

 

[SteveGregory]

I use L/600 for masonry support.

 

[UcfSE]

If you're designing the MBS, you should look in the building specifications and contract documents first, then the MBMA Manual, if you're in the US.