I'm planning to seismic retrofit my basement and looking for tips on making the process as easy as possible. I have a lot of clips to install!!
I worked with a structural engineer who drew up the plans which involve the installation of Simpson A35 clips to attach the sill to the rim joist and Simpson UFP plates to attach the sill to the 7.5" concrete wall.
My anchor related questions are:
1. The A35 clips are each installed with 12 x 1.5" 8d nails. Rather than swing a hammer 12,000 times, is there a nailgun I could rent that would be low profile enough to get into the 8-9" of space between the sill and the subfloor? I've used finish nailguns, but not framing nailers. I assume lining them up to shoot into the hole of a A35 plate is fairly easy?
2. The UFP plates require 1/2" 0-expansion anchors embedded 4" into the concrete. The concrete wall is old (1914) and brittle. When I've tried drilling smaller holes (3/16") in the past with an electric hammer drill and tungsten bit, either I hit a hard pebble that the drill bit doesn't like, or the concrete between the pebble crumbles and leaves a bigger hole. I've never tried drilling a 1/2" hole before - any tips on type of drill/bits etc? Is there a "Powder Actuated" gun I can rent that would shoot bolts like this?
Thanks in advance for any tips you can pass on!