The most common way of tying rebar together with tie wire used by concretors is called the slash tie.
How to tie rebar with a slash tie using concretor’s nippers and pliers
Step 1 – Position wire
The wire tie is passed diagonally behind the crossover point of two sections of rebar. The ends are then pulled forwards so the wire tie forms a U-shaped loop around the rebar.
Step 2 – Twist wire
Take hold of the U-shaped wire tie with the concretor’s nippers and pull it tight around the back of the rebar. Then rotate the nippers so they twist the wire. You may have to do this several times to get the required tension on the wire tie around the rebar.
Step 3 – Cut wire
Once you have twisted the wire and achieved the tension required to keep the rebar in place, squeeze down further on the handles of the concretor’s nippers and pliers so they cut through the wire you are using. This should leave a neat wire tie around the rebar.