【Haichuan Chemical Construction Technology】What are measure rebar?

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What are contingency rebar? Simply put, any rebar for which no information is specified in the structural drawings belongs to contingency rebar. To ensure that the rebar in the drawings is in the correct position after construction, the rebar added separately by the construction workers is called supplementary rebar. Specifically, the shims placed between the double layers of rebar in beams, the stirrups in raft slabs and floor slabs, the bracing rebar in shear walls as well as the horizontal positioning stirrups, and the formwork positioning rebar in frame columns all fall under the category of temporary rebar. In rebar work, are there any regulatory guidelines regarding supplementary rebars, such as those used in cast-in-place slabs? Their placement is determined based on the actual project requirements: first, it must be carried out in accordance with the requirements of the construction plan, and approval from the client is necessary ； Second, project negotiations should be carried out based on the actual usage conditions of the project, and signatures and seals from the supervisor, the client, and the construction party are all required. During construction, if steel reinforcement replacement is necessary, it is essential to fully understand the design intent and the properties of the replacement material. Any replacement of rebar in critical areas must be approved by Party A and the design unit, and such replacement may only take place upon receipt of written approval. The measures rebar shall be included in the quantity of the actual rebar work