Toggle bolts ratings in EFIS
Toggle bolts ratings in EFIS
(OP)
There is a municipality nearby that requires certified calculations for sign installation in facades. I've been askedto review and provide calculations and certification for facade mounted signs. The signs I've looked at thus far have come out to about 41lbs per bolt in shear, and slightly more than that in pullout (no FS applied). The bolts are 3/8" toggle style through EFIS with 3/8" plywood backing. Common sense tells me the bolts mounted in that facade will be fine, however, I would like to prove it in calculations. I can find mfg. tables for pullout and shear ratings in gypsum board, but nothing in plywood. How would I go about calculating those values? Thanks






RE: Toggle bolts ratings in EFIS
Also be sure to specify some type of sealing when dealing with penetrations of EIFS. Bad news if moisture gets behind it.
RE: Toggle bolts ratings in EFIS
RE: Toggle bolts ratings in EFIS
RE: Toggle bolts ratings in EFIS
RE: Toggle bolts ratings in EFIS
I suppose it is pretty doubtful that the sign would be applied to any covering directly in contact with the EFIS, and so this argument is likely moot due to clamping not occurring through an air gap.
RE: Toggle bolts ratings in EFIS
RE: Toggle bolts ratings in EFIS