[Haichuan Civil Engineering Issues] Are there any strength requirements for the rebar supports used in concrete slabs at construction sites?
Thread Content
The rebar supports used at the construction site have a brilliant design – they truly deserve to be patented! The earliest designs used rebar, but nowadays these supports are widely used in the market as they eliminate the need for rebar. It is stated that relevant regulations require the strength of such supports to be equal to that of the surrounding concrete, so as not to affect the structural strength. The strength of such supports is at most C20, or even C10 – they break as soon as they are dropped! What do you think?
Netizen’s opinion: As a person with a level 2 construction engineer certificate, I can tell you that it’s fine to use it in ordinary residential buildings; its effect is similar to that of shims. But using it in impermeable concrete clearly poses risks. ““Affect structural strength”? It’s not even worth considering. For the quality inspection of floor slabs, factors such as the grade of steel bars, the way they are tied together, the thickness of the protective layer, the grade of ready-mixed concrete, test blocks, vibration during pouring, and the slump value are all more important than this small element. When on-site supervision is carried out, it is advisable to focus on the key aspects and pay strict attention to the critical items; one should not focus on minor details while neglecting the more important ones.
Netizen’s opinion: The strength varies, and so does the degree of shrinkage! With widespread use, how many weak points will be created on one floor? ? They’re all in the industry; must be proud!
Those not in this industry might not know; there were no such rules in the past either
These still need to be discussed by industry experts in order to establish industry standards for implementation. People outside the field may not be able to understand what’s crucial