Core TradesCâu 174 / 700
Rebar chairs and bar supports are used during concrete placement PRIMARILY to:
a.Speed up the concrete pour
b.Act as expansion joints in the slab
c.Reduce the amount of concrete needed
d.Hold reinforcing steel at the correct height so the required concrete cover is maintained
Giải thích
Bar supports (chairs) hold the reinforcement at the specified position so that the required concrete cover is achieved and the steel is protected from corrosion. They do not speed the pour, reduce concrete quantity, or function as expansion joints.
Trích dẫn luật: 2025 CA Building Code, Chapter 19 (Concrete)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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