How To Install Wire Mesh/ Rebar/ Reinforcement in Concrete

How To Install Wire Mesh/ Rebar/ Reinforcement
In Concrete

Reinforcing concrete is crucial for durability. This process is not genuinely complex, but it must be complete properly to ensure the best results. Installing rebar or mesh in concrete starts with a plan that includes the actual placement and fabrication.

If you are planning on constructing a concrete driveway, walkway or patio, rebar of no particular shape is required. Now, when it comes to complex application, the rebar will need to be uniquely shaped, such as stirrups, dowels, corner bars, hairpins, candy canes and offset bends.

Step 1- Non-Complex Applications

Most people tend to stick with non-complex applications, leaving the complicated applications to the professionals. One of the first steps of the process is creating a material list:

  • Rebar or mesh
  • Annealed steel wire or bag tie spinner
  • Shovel or excavation equipment
  • Pliers
  • Concrete bricks or rebar chairs
  • Concrete
  • Level

Once you collect your materials for the project, it will be time to get started with the fabrication and placement. One of the most important aspects of the installation process is proper spacing. At this point, you should have a plan drawn up, which includes the bar sizes and spacing requirements. If not, you may need to hire an architect to devise the plans for you.

Step 2 – Choosing A Tie-In Method

There are several ways to tie the rebar, one involves utilizing a “bag tie spinner” and the other utilizes “annealed steel wire.”
Both of these methods work very effectively, but the annealed steel wire is more affordable, as it can be purchased in bulk rolls.
Once you make your final decision, it will be time to start preparing the area, where the concrete will be placed.

Step 3 – Preparing The Area

Preparing the area involves utilizing machinery for grading and compacting the ground. If this is a small project, a shovel should be all you need. Once the ground has been graded and compacted, it will time to mark the lines for the concrete placement.

If you want to, this is the time to pretreat the subgrade for moisture and termites. This is an optional step, so you can skip it if you deem it unnecessary.

Step 4 – Rebar Placement

At this point, you should have an idea of how long the rebar should be. If you are working with a 12-square-foot area, your rebar should have at least eight-inch centres in one direction and 12-inch centres in the other direction.

Mark the rebar with the correct layout measurements and then count each mark to determine exactly how many rebar are needed for each direction. When it comes to laying the rebar, it is crucial to make sure the top rows are perpendicular to the rebar on the bottom.

Step 5 – Tying The Rebar

The purpose of this step is to make sure the rebar stay in the correct position to ensure strength and durability. You will need to start by marking out the “layout bars,” which will be where the tie will be placed.

Take the annealed wire or bag tie and simply twist it around rebar intersection, twisting tightly until they are snug. You can do this with the pliers, continuing until all the bars are tied together.

Step 6 – Supporting The Rebar

If you believe the rebar needs extra support, you can utilize a concrete brick or “rebar chair” to hold them in position. These positioners should be placed in an area that will prevent the rebar from bending.

Step 7 – Pouring The Concrete

Continue to monitor the rebar, while the concrete is being poured. If any shifting is detected, just utilize a shovel to hold the rebar in place.

After the concrete is poured, you should protect any exposed rebar with caps. This will eliminate any risk of injury to your helpers or workers.

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