Shear Strength of Expanded Metal Grating

[enginerding]

I have a situation where there are some catwalks constructed of 3 psf expanded metal grading welded at 8" o.c. to perimeter angles. If I can get this to act as a diaphragm (which I know it will to some extent) I can avoid adding cross bracing directly beneath this grating. Does anyone know what diaphragm strength I can get from expanded metal grating?

 

[msquared48]

Call a metal grate manufacturer and see if they can give you some guidance.

Although there is undoubtedly some shear strength, do not rely on it without documented justification.

Mike McCann
MMC Engineering