How many types of steel mesh are there?
There are many types of steel bars, usually classified according to chemical composition, production process, rolling shape, supply form, diameter size, and use in structures:
1. According to the size of the diameter
Steel wire (diameter 3~5mm), thin steel bar (diameter 6~10mm), thick steel bar (diameter greater than 22mm).
2. According to mechanical properties
Grade Ⅰ steel bar (300/420 grade); Ⅱ grade steel bar (335/455 grade); Ⅲ grade steel bar (400/540) and Ⅳ grade steel bar (500/630)
3. According to the production process
Hot-rolled, cold-rolled, cold-drawn steel bars, as well as heat-treated steel bars made of grade IV steel bars, have higher strength than the former.
3. According to the role in the structure:
Compression bars, tension bars, erection bars, distributed bars, stirrups, etc.
The steel bars arranged in reinforced concrete structures can be divided into the following types according to their functions:
1. Reinforced tendon—a steel bar that bears tensile and compressive stress.
2. Stirrups——to bear part of the cable tension stress and fix the position of the stressed tendons, and are mostly used in beams and columns.
3. Erecting bars - used to fix the position of the steel hoops in the beams and form the steel skeletons in the beams.
4. Distributing tendons - used in roof panels and floor slabs, arranged vertically with the stress ribs of the slabs, to transfer the weight evenly to the stress ribs, and to fix the position of the stress ribs, and to resist thermal expansion and cold contraction caused by temperature deformation.
5. Others——Structural tendons configured due to structural requirements of components or construction and installation needs. Such as waist tendons, pre-embedded anchor tendons, prestressed tendons, rings, etc.
Post time: Mar-02-2023