Grating to transfer shear (lateral load)
Grating to transfer shear (lateral load)
(OP)
I have a simple frame of W10 beams. A mechanical unit will rest on it. I am placing W-19-4 grating on the frame. There is very little lateral load coming from unit. What should I specify the contractor to do with grating and w10 joint so that I can assume that grating is acting as shear diaphragm?






RE: Grating to transfer shear (lateral load)
Why do you want to use the grating as a shear diaphragm if there is very little lateral load?
Does the grating manufacturer recommend their product for transferring in plane shear loads?
Good luck.
RE: Grating to transfer shear (lateral load)
RE: Grating to transfer shear (lateral load)
RE: Grating to transfer shear (lateral load)
I agree with BBruins that grating doesn't provide much diaphragm shear values.
RE: Grating to transfer shear (lateral load)
I normally add horizontal diagonals for bracing.
Regards,
Lutfi
RE: Grating to transfer shear (lateral load)
RE: Grating to transfer shear (lateral load)
RE: Grating to transfer shear (lateral load)
I assume this is a rooftop platform that you are doing. If my assumption is correct, another consideration is the height of the platform above the roof. You should leave enough space between the bottom of the platform and the roof surface so that when it's time to re-roof, workers can reasonably work under the platform to put the new roof down. Depending on the size of the platform, roughly 3 feet is good. This could be less for a small platform.