I'm installing a custom metal gate at my daughter's. It is about 8 feet tall, 40 inches wide and suppose it weighs about 100 lbs.
The post that will hold it is 2" square, 16 gauge well, bolted to the concrete flatwork and braced to the house. It is solid. The hinges need to be attached to the post. Welding at this site is out of the question. Each hinge consists of a thick strap (approx. 1/8" material) "U" shaped with the legs being about 1-1/4 inches wide and 2 inches long. Question: how best to attach.
1) I can drill two clearance holes in the straps and attach with sheet metal screws into the 16 gauge post. Total = 4 screws per hinge. 2) I can drill clearance holes and use self tapping screws into the 16 gauge post. Total 4 screws. 3) I can drill through the post and install two long screws (say #10 or 1/4) with nuts and lock washer on the other end.The thing I don't like about sheet metal screws is that I never know what size pilot hole to drill. Just guess at the root diameter??? I also tend to over tighten them and they break. Same goes for the self tapping screws. If I break one (I've done it before) I have to abandon it and start a new hole, probably not in the optimum location.
Are the through bolts the best idea?
All comments appreciated.
Thanks, Ivan Vegvary