leakyroof said:
Details man, we want details..... [poke]
You added 3/4" thick nailing/screw supports across several studs to help keep the upper cabinets..up [big grin]... yes?
Added a vent for what looks like a stove top or countertop burner in the middle of the cabinet run...
The only part I was confused about was the hole in the upper right picture/support.
Exploring the wall a bit or running wire and need an access hole that would be covered up by the cabinet support? [popcorn]
The GC had installed 5/8" drywall over what appears to be a cast plaster. The core reminds me of Flexicore floors/ceilings.
The hole existed behind the drywall. I exposed it by chance when I removed that section of drywall.
I posted a close up of the view through the hole so one can see the shape of the wall cores. There is no wood in these walls anywhere I had found/seen. The original wall product crumbled when installing Tapcons or Spax Multi Material screws. Without good screw purchase the cabinets install would have failed. I choose to remove the drywall so I could use construction adhesive directly to the plaster wall.
I tried toggle bolts, but the wings would not open in the wall, also tried Togglers, could not get them to open either. Time for Rawl/Powers Calk-In anchors. I choose 1/4-20 over 10-24 due to embedded depth and pullout. I used the ratings for clay brick masonry which is fairly fragile form Powers chart. The high low patten was used to limit the chance of the the 2x twisting.
The setting tool for the Calk-Ins is a must. It holds the threaded inner core (which is tapered), has a collar the sets the lead sleeve over the tapered inner core when you strike the tool with a hammer, locking the anchor in the hole. I've used Calk-In anchors on other things, never had one fail. I tried pulling one of these out with a pry hooked to a bolt threaded in it, the anchor did not move at all.
The upper cabinets were spaced for a Wolf 48" vent hood that will go in after the 3cm gauge solid stone back splash is installed by the stone fabricator. I have a feeling we'll end up using the Calk-In anchors in the stone also.
The backer is a 2x4, 1.5" thick, bolts are 3" long.
Tom