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2 votes
Accepted

How to attach cat shelves to cement wall that already has nail heads

"keyhole hangers" will attach wood to nail heads
Jasen's user avatar
  • 21.6k
1 vote

Spacing between shelf brackets for 1/4 inch plywood and light load

Take your longest piece of leftover 1/4", balance it between two chairs, drop your cat in the middle and see what happens. If you don't like the result, move the chairs closer til you do. Tack ...
jay613's user avatar
  • 40.5k
1 vote

Spacing between shelf brackets for 1/4 inch plywood and light load

"Reasonably" and "safely" aren't really at play here. Both are highly subjective. It also depends on the type and quality of the plywood. Rough construction plywood is very ...
isherwood's user avatar
  • 140k
1 vote
Accepted

Best way to patch 8" square through hole in cinder block wall

A half-block and a bit of mortar. Given a block is 8x16 (nominal, with mortar joints) and a half-block is 8x8, nominally. Rather than cutting down a full block, just buy a half-block in the first ...
Ecnerwal's user avatar
  • 220k
1 vote

Best way to patch 8" square through hole in cinder block wall

Kind of depends what's on the other side, and whether you need it to be airtight, watertight, smooth finished, capable of bearing a load, and visually indistinct from the rest of the wall. Easiest is ...
gbronner's user avatar
  • 5,688
1 vote

How would you design a code legal guard railing on a raised block deck that also has a 22" high block bench that runs along the deck perimeter?

See IRC R312.1.1 for whether guards are required. If the walking surface is higher than 30" above the surrounding grade, then they're required. When guards are required, they're relatively ugly ...
popham's user avatar
  • 10.4k
1 vote

How do I repair a sewage leak in a wall?

You will have to have axcess to the other side of the wall. What is on the other side? If it goes into the ground it looks like digging is in your future. The copper drain will need to be cut out and ...
RMDman's user avatar
  • 32.2k
1 vote

Are these block foundation cracks problematic?

If you have granular soil under your foundation, then apply a concrete sealant with a class 25 rating under ASTM C920. If you have a cohesive soil like clay under your foundation, then apply a ...
popham's user avatar
  • 10.4k
1 vote

How should I solve/approach the cracks in my garage's cinderblock walls?

Patch the cracks with an exterior grade caulk. If you've got clay soil, then there could be crack growth and new cracks in the future. The stair pattern cracking is typical to settlement. Your left ...
popham's user avatar
  • 10.4k
1 vote

How would you fill this gap between a garage slab and a foundation wall?

Your desire Any solution you choose is going to bring even more attention to that seemingly small gap unless you paint everything after. Overall, just get some mortar mix and fill it. Real problem ...
MonkeyZeus's user avatar
  • 16.7k
1 vote

Cinderblock cmu masonry question

It doesn't make a difference. Either way is fine, just make sure the cut is even so the mortar joint is even. If you're concerned about it being weakened, fill the core with grout after the block is ...
Ecnerwal's user avatar
  • 220k

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