What is Rebar?

The first-level rebar is the name in the old rebar specification. HPB300 is usually called the first-level rebar. H (Hot-rolled) means hot-rolled, P (Plain) is smooth, and B (Bar) is a bar. This refers to the rebar , 300 indicates a yield strength of 300 MPa.

First level

Rebars arranged in reinforced concrete structures can be divided into the following types according to their functions and uses:

1. Tension bars-steel bars that are subjected to tensile and compressive stress.

2. Stirrupsbear part of the diagonal tension and fix the position of the stress bars, mostly used in beams and columns.

3. Stand ribs-used to fix the position of the steel hoop in the beam to form the steel skeleton in the beam.

4. Distribution ribsused in roof panels and floor slabs, which are arranged perpendicularly to the ribs of the board, to transmit the weight to the ribs uniformly, and to fix the position of the ribs, and to resist thermal expansion and contraction Induced temperature distortion.

5. Others-structural ribs configured due to component structural requirements or construction and installation requirements. Such as lumbar tendons, embedded anchor tendons, rings, etc. ^[1] .