How to Lay Rebar for Concrete
Concrete is known for its durability and resilience, but it isn’t infallible. One problem that can occur with concrete is cracking, and when that happens, it can pose structural issues for the concrete, as well as having a detrimental effect on its appearance. In this article, we’re going to look at the process of laying a rebar for your concrete and how that can help.
How much rebar do you need?
Rebar is placed in increments of one foot, and they’re placed one foot apart. This means that you need to think of the wider picture when laying your rebar. As an example, let’s say you need rebar for a space that is 6ft2 – you will need four pieces of rebar for each section, and each section will be spaced one foot apart, meaning you need 16 pieces of rebar for the 6ft2 space. This also applies to the height of the space that requires the rebar.
Put the rebar in position
You should start by placing your rebar a foot away from the sides of the space. Once in position, you can ensure the rebar is firmly in place by hitting it into the concrete with a mallet. Making sure to keep the rebar as level as possible, you should place each piece one foot apart. Repeat this process until you’ve laid all the necessary rebar.
Tie the rebar together
Tying the rebar is crucial to ensuring the rebar stays in place and functions as it should. There are different ways to go about tying your rebar: saddle ties and figure 8 ties. We’ll run through these ties now:
Pass the wire behind the rear bar, and then across the front one. Then, you should pass it back through behind the rear bar and then again past the front one. It is then time to twist the ends together, cut the feed wire from your spool and bend the cut ends so they can’t become untied.
Figure 8 ties:
A figure of 8 tie is a fairly simple, self explanatory one, but you should pull the wire around the rear of the bar, then diagonally across the front, around the rear again and then diagonally across the front in the opposite direction. Twist the wire together, cut it from the spool and bend the ends backwards.
When tying your rebar together, you must do it so that the rebar is strong enough to withstand somebody stepping on it when it’s ‘suspended’ over some concrete. When the rebar is in position, you should hold it in place while the concrete is poured over it. You can use ‘rebar chairs’ for this; make sure you position them at intervals that do not allow the rebar to bend.
When you have correctly applied rebar to your concrete, you’ll be left with a surface that is even stronger, and it was strong to start with.
iMix concrete are proud to provide the highest quality concrete for domestic and commercial customers throughout Romford, Ilford, Essex and the wider London area. If you’d like to know more about the work we do, please get in touch with us today on 0800 030 9015 or fill in our handy contact form and we’ll be more than happy to help you with anything you need.