![]() When the dimensions of a slab, wall or other form exceed the length of a single stick of rebar, it is required to overlap and tie rebar pieces to create the added length. The most common lengths of pre-cut rebar in the United States are 20`, 40' and 60'. Based on this and the density of steel used in rebar, the Rebar Size Table contains reasonably accurate specifications of rebar linear weight and lateral (face) area based on rebar size. Therefore, size 4 is 4/8 th of an inch, which is 1/2", and size 8 is a full inch in diameter. In the United States, rebar sizes are in increments of 1/8 th inches in diameter. Note: guage is not a correct term for rebar.
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