New answers tagged concrete
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How should a 4x3 closet bend be installed in concrete?
Assuming that you are using ABS or PVC pipe and fittings, the inlet of the 4 x 3 closet bend should be flush or below the finished grade of the concrete floor. You do not want the fitting's hub to be ...
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Correct transition for pvc conduit to liquid tight flexible conduit on a concrete slab
If you use an LB, LR, or LL, my understanding is that code requires you to maintain access to the removable plate; I’d use a sweep 90 degree bend instead. This way, you can, if needed, pull the wire ...
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What is the best way of removing 1.25" of concrete from slab floor?
Use a concrete planer or shaver. Some of the large shavers can remove 1" of concrete or more per pass. You will need to grind the floor after using the shaver to smooth out the shaved area as it ...
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crumbling foundation wall
If it's efflorescence, then there is not much to worry about. If you see more than dust then it would be a cause for concern.
If you want to stop the dust then there are surface penetrating sprays ...
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How do I finish half concrete wall in walk out basement without framing
if the concrete is waterproof, you can glue the drywall to it with a special cement that is made for the purpose.
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How do I finish half concrete wall in walk out basement without framing
Since you can run cable and put switches and maybe some outlets in the top part of the wall, in this section I'd lay a minimal furring strip floor to ceiling to achieve a uniform face for the drywal, ...
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How do I finish half concrete wall in walk out basement without framing
You need insulation and vapor barrier. Drywall should rarely be attached directly to concrete. I've done it once, but it was on a basement wall under a heated garage where clearance was an issue.
&...
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Do I need 2x6 studs in my basement energy walls?
No.
2x6 studs were used to allow R-19 or better insulation in the framed portion of the exterior walls. Unless you want that much insulation below, 2x4 walls are adequate (and standard in my northern ...
- 115k
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How can I waterproof an exposed porch with a basement room underneath?
I'd suggest redefining the problem. Rebuild the entire system as if the extended basement is the new foundation line and the "porch" is now an actual extension of the house with real walls ...
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How can I waterproof an exposed porch with a basement room underneath?
You build your basement room, you roof it to waterproof, you build a porch deck on top just like you build a deck on any other waterproofed low-slope roof. And yes, the roof needs to slope.
EDPM ...
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How can I waterproof an exposed porch with a basement room underneath?
What to waterproof with is dependent on what you use to build the deck of the porch.
If it is concrete, you need to waterproof the surface of the concrete and seal the edges, so water does not get ...
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Discontinuous footer?
After talking to the town building inspector, no footer is required if the foundation walls are 12" thick (which they are). This is apparently pretty common in the area.
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Can a concrete slab with a 6 inch deep footer support a wall made of 8"x8"x16" concrete blocks that is 8 ft high?
A 9" wide footer is too narrow for a 8" wide wall, which must be at least 12" but you need to look up the value in the correct table, depending on soil type. Going double the wall ...
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Concrete base for parcel box
Don't forget to extend the footing (either concrete or gravel or similar) in front so you have room to use the box without standing in mud. Because directly in front of the box will be an unavoidable ...
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Can a concrete slab with a 6 inch deep footer support a wall made of 8"x8"x16" concrete blocks that is 8 ft high?
Depends on the soil beneath it, and how wide it is (thus, the soil loading applied to that soil beneath it.)
Typical soils have loadings ranging from 2000-5000 PSF. (pounds per square foot)
The "...
- 166k
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Concrete base for parcel box
To use significantly less concrete while still being deep enough to be stable: Rather than pouring a single massive block, dig four holes (one for each corner/mounting hole location) and pour 4 small, ...
- 166k
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Concrete base for parcel box
An alternative suggestion. To get depth (so more stable ground) and to keep the base of the metal off the ground (else it will rust in minutes, especially from condensation in the inside) could you ...
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Concrete base for parcel box
Is the box at risk of being struck by vehicles?
You might choose to have slightly more frangible anchors so they break first, minimising damage to your vehicle. Some hardwood dowells vertically with ...
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Concrete base for parcel box
The depth depends on your regional frost line. For europe we have 80-150cm (varies wildly per source, depends on your location) frost line. That means, to avoid frost-heave, the textbook says the ...
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Concrete base for parcel box
Size will be an opinion mainly, but at least 5 to 8 cm(WxL) bigger than the box and about 8cm deep/thick.
Anchor bolts should be easy to use to anchor the box and will make the box easy to remove for ...
- 16.8k
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Discontinuous footer?
Let's see - I guess the actual question is whether it's possible the footer is in sections, and whether that's norma/safe?
Safe - well, 20 years and the house is staying put, so probably it's safe.
...
- 166k
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Increase Thickness of Concrete Pad (for BBQ Island)
Since the pad has been out in the weather for a year, it won't have the best surface for keying into your new layer of concrete.
You'll need to waterblast the surface to clean off all organic material....
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Increase Thickness of Concrete Pad (for BBQ Island)
There's no need to raise it that much.
Put on ~1/2" of thinset, with proper slope for drainage (so, not 1/2" evenly, if it puddles now. Slope at 1/8" per foot towards the edges so water ...
- 166k
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how to repair a concrete patio slab with crumbling edges
Interesting issue...and seems there are a few things taking place. I'm going to break my recommendation down to two different parts:
Repairing the Crumbling Foundation
You want to ensure that any ...
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Increase Thickness of Concrete Pad (for BBQ Island)
I would drill a few/bunch of holes in the old concrete and fill with short steel rods/rebar/bolts as anchors. About two inches above the old level, and in about two inches in the old concrete.
Fill ...
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