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Questions tagged [rebar]

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Can you substitute one 3/8" rebar by three 1/4" rebars?

[This question is about constructing techniques in Brazil, so if anything is not clear or not properly worded, please let me know and/or suggest phrasing improvements] I am building the foundations ...
Luiz Cordeiro's user avatar
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0 answers
47 views

Foundation Wall Question

I’m new to building so I am here with a foundation question. We hired a contractor for our concrete pour on a foundation wall. The finished result is attached in the picture below. Other than the ...
Jay's user avatar
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2 votes
1 answer
95 views

Driveway Concrete Help

New here. I wonder if anyone here can help me with supplies, dimensions, type of concrete, rebar type, and other things I will need to fill in a driveway area with concrete. Story: So, when I bought ...
Peter's user avatar
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1 vote
1 answer
478 views

How Deep should 4x4 post be for Cantilever style Pull Up Bar to eliminate deflection? [duplicate]

I have a pull bar. It is 48 inches in-width and spans out 32 inches with the "pullup" portion of the bar located 30 inches into the spanned out end portion. I would like to know how deep ...
FlexBendDeflect's user avatar
1 vote
0 answers
94 views

Thickness of concrete wall for deck construction

TL;DR: What thickness of a concrete wall underneath a deck should I go for? Is there any rule of thumb how to determine it? I am planning to build a deck next to my house. The house is in a mild hill ...
Topper Harley's user avatar
1 vote
0 answers
85 views

Remesh for post base concrete that will have lateral forces

Would using rolled up remesh be suitable for reinforcing the concrete in the below scenario? I'm planning to install some post bases in some concrete which will serve as the bottom of a 16-ft long, 3-...
g491's user avatar
  • 750
0 votes
1 answer
140 views

Is rebar required when raising window sill?

I have an window opening on the side of our covered patio (concrete block/stucco). I want to raise the sill up 24" to accommodate an outdoor kitchen counter and hide the pool pump/filter on the ...
Ben's user avatar
  • 15
0 votes
1 answer
729 views

How can I vertically lengthen my current 4x4 fence posts to accommodate sail shades roughly 12 feet high?

I’m hoping to extend the height of my current 4x4x6 fence post on four corners of my yard so that I can attach triangular sail shades to them. I cannot remove the current posts with longer ones nor ...
Pete's user avatar
  • 1
0 votes
2 answers
341 views

How to pile drive hooked rebar

I use a combination of a sledgehammer and jackhammer to drive [straight] rebar for use in retaining walls . The former gets the stakes started and the latter really drives them home with authority. ...
WestCoastProjects's user avatar
1 vote
3 answers
290 views

Brazing rebar not heating enough

I'm attempting to braze together two pieces of rebar. I'm using a Bernzomatic ts8000 torch and MAP-Pro gas, and I just can't seem to get it hot enough (aiming for a red glow). I've had the torch on ...
G__'s user avatar
  • 203
3 votes
1 answer
3k views

Do I need to use rebar or wire mesh for an 11' x 10' new concrete patio slab?

I am hiring a company to do some concrete work. We are going to have an 11' x 10' slab laid over what is basically bare sand. We live in southern California and the temps can get to 122 in the summer. ...
Adrien's user avatar
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1 vote
2 answers
2k views

rebar requirements in foundation

follow-up question: I am attaching a diagram with my foundation plan. I am in north NJ where frost line 3 ft. Can you kindly look at the plan and opine; I tried to use best practice from all replies. ...
marc Katz's user avatar
  • 109
0 votes
1 answer
502 views

Horizontal rebar protruding from foundation [closed]

On a new build, in Grants Pass, Oregon, should rebar protrude horizontally from a stem wall foundation? The concrete is poured. It is no Ufer, it is rebar - looks to be used to assist in supporting ...
Lesley's user avatar
  • 11
2 votes
1 answer
413 views

Why is rebar dislodging stucco? Remedy?

A 25 year old Florida building's rebar is pushing out. The thick red line shows where the rebar is detached from the concrete (and theoretically could be clipped / removed). Thin red line shows the ...
gatorback's user avatar
  • 3,088
5 votes
2 answers
231 views

Rebar for small basement stairs supported by wall on both sides

I'm rebuilding small stairs (5 steps) leading from the street to my basement apartment. They are supported by brick walls on both sides, as you can see in the picture. The old stairs i just ...
amphibient's user avatar
  • 7,515
2 votes
4 answers
2k views

How can I keep a rod vertical as I drive it into the ground?

I am trying to insert rebar into the ground to hold an art project. I cannot get it straight. I am starting with a drill bit, then hammer, then fence post banger. I is angles every time. ...
Connie S Almond-Drew's user avatar
1 vote
4 answers
4k views

Angle grinder blade(s) for cutting rebar

I have tried both thick and thin blades for cutting rebar. The thick one takes forever and is like smelting a sword. The thin one gets the job done but the blades I selected - limited choices at local ...
WestCoastProjects's user avatar
0 votes
2 answers
61 views

Rebar cutter and bender's and the relative grade range of steel

I'm comparing two budget rebar bender and cutter products (Crescent or HIT Tools), not sure the grade of steel Crescent is able to handle other than "soft or mild steel", HIT mentions up to ...
user289394's user avatar
0 votes
0 answers
36 views

Home Bball court of concrete

I am looking to make a basketball court in my yard. Probably gonna be around 36’x25’. I think a concrete truck can bring about 10 yards of concrete. Would a 3.5” thick slab be strong enough? Do I need ...
Tyler's user avatar
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3 votes
5 answers
5k views

How to prevent rebar from rusting in the ground?

I am building a wall with rebar, cinder blocks, and rebar, as I've seen in many YouTube videos. ________||_ ___________ ___________ _____ | || | | | | <--cinder ...
Village's user avatar
  • 1,045
0 votes
1 answer
379 views

How to attach rebar to a sheet of metal?

I need to use some rebar, driven into the ground, to support a metal sheet: ______________________________________________________________ | ...
Village's user avatar
  • 1,045
0 votes
2 answers
320 views

Exposed rebar end in concrete - options

I have a walkout staircase. The top wall of the walkout had to be cut down to use as a tread. Cutting down the top wall exposed 6 ends of #5 rebar. What should I do? The wall is 8" thick and ...
Fresh Codemonger's user avatar
0 votes
2 answers
2k views

How far into a footing pier should rebar extend from the rock below?

Cottage is on Canadian shield (igneous rock) and unfortunately slopes off where deck footings are being installed. The deck will be secured only to a corner of the cottage and the two furthest ...
david mccormick's user avatar
0 votes
2 answers
126 views

Concrete cost difference if forms done yourself

Thinking about getting a 4 inch thick concrete slab poured for my back patio. I was wondering if I dug everything out, made and set the forms, and laid the stone and rebar, would that be a ...
mang's user avatar
  • 158
2 votes
2 answers
3k views

Making a 4" hole in my foundation , will cutting the rebar cause the foundation to crack?

Making a 4" hole in my foundation , will cutting the rebar cause the foundation to crack ?
DENIS POIRIER's user avatar
1 vote
3 answers
3k views

How do you reinforce round deck footings?

I'm building a covered deck on some weak soil (clay/sandy clay). I'm going to use 24" round footings that I was planning on reinforcing with a bunch of left over rebar. How can I effectively reinforce ...
ShemSeger's user avatar
  • 367
0 votes
2 answers
778 views

Rebar required for 24 ft tall 4x4 square steel tube 1/4 inch thickness, 4ft deep in a concrete base, horizontal load of up to 1,000 lbs at the top

I am installing a 24 ft 4x4 square quarter inch thick steel tube 4 ft into the ground with a concrete base of 28 inch diameter and just over 48 inches deep, so 20 ft of the post is above the ground. ...
Robert's user avatar
  • 1
2 votes
4 answers
1k views

How to remove rebar passing through an inaccessible pipe

My maintenance crew recently discovered that someone drove a rebar through a sewer pipe during construction. Obviously this causes problems. The rebar in nearly dead center of the pipe which is ...
Dav's user avatar
  • 21
-1 votes
2 answers
486 views

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 ...
gerrit's user avatar
  • 245
0 votes
0 answers
888 views

Can I cover rebar sticking vertically out of the ground with something that would permit me to pour concrete over top of it?

First off, this project is free from review from inspectors; i.e. none of this has to be to code. I want to pour a concrete column. The column isn't structural - it's like a column you may find at ...
harperville's user avatar
2 votes
6 answers
3k views

Cut rebar in concrete

I opened up a hole in my concrete wall to pass a threaded PVC 2 inch male adapter. On the other side there is an aluminum metal sheet. The problem is that I hit rebar and can not change the position ...
Rick's user avatar
  • 889
0 votes
1 answer
751 views

Do I need rebar and footing for a 1'4" tall 4" thick concrete wall?

I'm building a small concrete wall for an inground sandbox. The wall will be about 1'4" tall 4" thick and the longest 2 sides run just over 80" long, it is an L shape and the other sides are fairly ...
maxpower's user avatar
  • 103
2 votes
1 answer
2k views

How to lay rebars for a 4'x4'x12" footing for a column?

I have three columns to support lvl beams under an addition and have a question about proper rebar layout for each (identical) footing. All specs are already checked by engineer, but there is one ...
người Sàigòn's user avatar
0 votes
3 answers
6k views

How much shear load can rebar withstand?

I'm thinking of integrating rebar into a short grape trellis as horizontal supports for the vines to climb on. Is there anywhere I can get the deflection/load information for rebar spans? As currently ...
The Shoe Shiner's user avatar
2 votes
1 answer
3k views

How to suspend rebar cages for piers

Hello. We are converting a former metal portable building used for a school classroom in to a living space. We have got all the site plans, remodel plans, electrical and foundation ECT. We are trying ...
Shellsp's user avatar
  • 21
0 votes
4 answers
19k views

Hammering a rebar into the ground without bending it

I want to hammer a rebar into semi-hard ground (about 2 feet in). What options do I have in order to hammer it in straight, without bending it in the process? EDIT: This is a 3/8″ diameter rebar. ...
Yaron's user avatar
  • 1
0 votes
1 answer
2k views

Do I need steel beams (rebar) for a very short block wall (on top of

Do I need steel beams for a very short block wall (there is an existing poured cement wall and we wish to raise it by about a foot or two) to raise the height of the wall around the stairs. On top of ...
KITHP's user avatar
  • 1
0 votes
2 answers
249 views

Concrete column splice - weld or surround with 6mm?

I have a concrete column using 16mm rebars. The column needs to be extended (and of course the rebars) for the 2nd storey of the house that is being built. Should the splice be welded or surrounding ...
user1764381's user avatar
0 votes
1 answer
824 views

Terminology - rebar "tie wire" or "tire wire"?

This is about tie wire that is used in rebars in construction (e.g.: RCC beam and slab). Sometimes I hear people say "tire wire" instead of "tie wire". Is "tire wire" a valid alternative terminology ...
user1764381's user avatar
0 votes
3 answers
965 views

How to hang electric fence from posts?

I need to make some posts for a small electric fence (designed for small animals / gardens) in my backyard. This just encloses my vegetable garden to keep out rabbits. My wire is aluminum. I want to ...
Chrysippus's user avatar
0 votes
1 answer
2k views

How to drill to insert rebar into a large rock (5mx5mx5m)

I am pouring a reinforced concrete beam. It contains rebar. I would like to insert the rebar (horizontally) into this rock: What kind of drill and drill bit and to what depth should I drill to insert ...
thelawnet's user avatar
  • 598
3 votes
1 answer
2k views

How should I prepare the site for a concrete step?

just bought a house where we've got an existing concrete slab porch that is 12" above the adjoining sidewalk and it does not have a step. We want to add in a large 6" tall x 3' wide x 11' long slab ...
Donna's user avatar
  • 31
1 vote
2 answers
693 views

Maximum height of hand-shaped concrete curb?

I need to guide water flow at the end of my driveway (see this question). My plan is to put in a concrete curb or hump to guide the water. I've gone all over the map in thinking of how to build it, ...
Daniel Griscom's user avatar
4 votes
2 answers
30k views

Adding rebar to deck footings and piers?

I've heard a few people mention adding rebar to deck footings and piers to make them stronger, but I haven't been able to find any details on how exactly to do this. Is it sufficient to just hammer ...
Brh's user avatar
  • 881
1 vote
3 answers
51k views

How big a hole do I have to drill in concrete to embed rebar in it?

I have a concrete patio that I'd like to use as the foundation for a CMU wall. I'd like the CMUs to be tied into the patio slab with rebar. I get that the gist is to drill a hole in the slab, put ...
iLikeDirt's user avatar
  • 12.6k
1 vote
1 answer
105 views

Brick pillars gone now what?

I have a back concrete patio in pretty good shape. Surrounding it on 2 sides are concrete pads (| is one pad and the other is -). These two pads are about 1 foot a piece wide. The X's are the brick ...
DMoore's user avatar
  • 49k