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Person tying wire around pieces of reinforced steel in a dirt trench.

Overview

We'll teach you how to prepare reinforced steel before you pour your concrete. You'll learn how to cut steel to size with an angle grinder as well as a simple way to tie steel together when you need to overlap it.

Steps

1Lay the reinforced steel in the trench

Lay a line of reinforced steel along the length of the trench. Then put the plastic bar chairs under the steel to raise it slightly off the bottom. The bar chairs should be placed in left and right pairs, every metre or so, the whole way down the trench.

2Extend a line of reinforced steel in the trench

If your trench is longer than one piece of reinforced steel, lay a second piece to cover the gap. Measure the distance you need to span and use your angle grinder to cut a length of steel that is at least 500mm longer. Then lay the added length in position, prop it up on bar chairs and tie the overlapping sections together with joining wire. Once your whole trench is reinforced, you’re ready to pour your concrete.

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Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.