Questions tagged [concrete]

Concrete is composed of cement, aggregate (including crushed rock and sand) and water. In homes, it's frequently seen in the foundation, driveway, sidewalk, patio, and stone walls. Note that bricks use mortar in the joints, not concrete.

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110 views

Load Bearing or Not How Can I Know For Sure

We have an unusual 3 inch thick poured concrete floor in a steel mesh in the ground floor of our house, under this is a basement like area with an old riveted steel across half of it and a couple of ...
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How to mount these anchors?

In the mounted object (pull-up bar) there are 4 holes and in the kit there are 4 such anchors. One type has a metal sleeve, there's decent gap between internal bolt and the sleeve - it moves freely, ...
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Hanging a ceiling lamp from reinforced concrete; what tool do I need to avoid rebar?

I'm trying to hang a ceiling lamp from what appears to be a reinforced concrete ceiling. My anchors require a 40 mm deep hole, but I don't succeed in drilling more than about 35 mm deep with my ...
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Why are my concrete water tanks not retaining water?

I have concrete water tanks, where I grow ornamental fish. Recently on draining the tanks to clean, I observed that they do not retain the water. The tanks drain over time, ...
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Concrete Apartment Balcony Repair

There seems to be two layers on top of the concrete: the thicker, white-ish layer next to concrete the gray, textured layer on top I'd like to fix this up, but have no idea where to start. Would ...
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Dig out some remaining rotted post or just pour in cement [closed]

Will concrete harden although some rotted wood is still in hole?
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Remove or dissolve concrete adhesive

Trying to remove a pea-gravel covering which is laid over concrete with adhesive. Aprox 100 sq. ft area. Tried to scrape and way too labor intensive. Any adhesive/glue dissolve available?
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How to bind pebbles in-between pavers?

I have roughly 700 square feet of pebbles and pavers in my back yard, and the issue I'm having is that when I step on the pebbles, they move all over the place. I'd like to apply some kind of binding ...
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How to prevent water jumping from upper lintel to the lower lintel? [closed]

Water jumping from upper lintel to lower lintel and water jump to lower window (https://i.stack.imgur.com/u8FCr.jpg)
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tools and material to seal and shape concrete rooftop lip?

How can I seal the concrete lip in this building's rooftop? This lip is about 5" wide, and I need to seal it. At the same time, it needs to be even with the rest (ie.it needs to look "square" ). ...
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can asphalt and concrete be laid side by side on roadways? [closed]

Can concrete and asphalt be laid side by side on roadways? If no why? what would be the problems faced?
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Hanging 100 pound mirror on cement wall

How do I hang a 100 pound mirror on a cement wall? Special hooks? Thank you.
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What type and quantity of steel reinforcement should I place in a slab under a water tower?

I want to build a water storage tower I was going to build a slab about 2.8 meter by 1.8 meter the tower / storage room would be 2.5 by 1.5 and about 2.5 meters high and built out of concrete blocks ...
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167 views

how to repair garage concrete threshold

I have a really badly cracked concrete floor at the garage's threshold, looks like the previous owner just slapped concrete on threshold, and it has broken in pieces. What is the right way to fix it? ...
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Proper demolition hammer selection for stone wall and concrete steps

I’m looking to replace a wall under my deck, and to remove an old set of concrete stairs under same. I’m currently researching the project, and hoping to do it this fall in cooler weather. The stone ...
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Advice on building a livable cabin floor on a concrete slab with insulation and plywood

I'm planning to build a 10 x 12 living space based on a shed design. The shed will rest on an existing concrete slab therefore my plan is to lay 6 mil polyethethylene sheeting and foam board ...
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Concrete sinking in front corners of attached garages

I was looking at buying a house and the concrete in the garage sunk about 2" on each front corner, leaving gaps under the garage door. I then realized that at least 5 houses on the same street had ...
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Diameter of an 11' foot high, 3" (2&7/8) steel post footer hole

I know that the general standard for post footers is to make the diameter of the footer hole 3 times wider than the post itself. However, I want to make sure that even in an 11' foot post (which seems ...
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Need help installing the pull up bar i just bought

I am a rookie that hasn't done much installing/drilling etc. in my life (I just turned 18 ;P). I bought this pull up bar online, assembled it, but now I have to install it on my wall. At first I ...
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Removal of leftover glue from glued down 3/4 T&G flooring

In the process of removing the 3 different types of flooring in the house we just bought and before we move in get the major things out of the way. Carpet is easy enough for the most part, the house ...
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Grading over asphalt and concrete walkway

My house is in a small city lot, it's a 1924 Craftsman with a concrete block foundation. On the north side of our house, between the wall and a fence line, the previous owner had asphalt over the ...
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What are my options for plugging leaking gaps, cracks or seams from the back, in concrete walls?

What type of product are available to plug larger gaps in concrete walls, which are subject to hydrostatic pressure (e.g. wet dirt on one side)? Specifically I have an 18" tall retaining wall type ...
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Does a masonry hearth need a moisture barrier between it and the plywood subfloor?

I intend to place a hearth on to the plywood floor of my mobile home. Just a basic question really. Do I need a plastic barrier between the plywood and the concrete? My worry is that it may condensate ...
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How do I fix badly peeling and hairline fractures on indoor concrete walls?

How do I paint and fix peeling paint and hairline fractures on my indoor concrete (cinder block) walls? The popcorn ceiling is a mess too.

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