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We have to attach pockets and shade brackets to the undersides of the horizontal steel support beams (indicated by arrows in the exemplar photo).
The brackets are 1/8" thick, the pockets about 1/16" and the steel beams are 3/8" thick. We will be screwing/drilling straight up. Based on this Teks screw application paper I'm thinking we'll use hex head Teks 8x18 in one inch length.
We've installed a lot of motorized shades -- however, there is normally blocking or another substrate to mount to. In this case the architect has specified that we mount directly to these structural beams. We have about 200 fasteners to attach and Davis-Bacon wages and we'd appreciate any tips to improve our efficiency. Do you recommend using a punch before we start screwing/drilling?
Any and all comments appreciated.

The brackets are 1/8" thick, the pockets about 1/16" and the steel beams are 3/8" thick. We will be screwing/drilling straight up. Based on this Teks screw application paper I'm thinking we'll use hex head Teks 8x18 in one inch length.
We've installed a lot of motorized shades -- however, there is normally blocking or another substrate to mount to. In this case the architect has specified that we mount directly to these structural beams. We have about 200 fasteners to attach and Davis-Bacon wages and we'd appreciate any tips to improve our efficiency. Do you recommend using a punch before we start screwing/drilling?
Any and all comments appreciated.