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Which ACI standard hook is cheaper?

Which ACI standard hook is cheaper?

(OP)
The 90 degree hook or the 180 degree hook? As far as I know they perform the same for development. Which is better to specify when either will work?

RE: Which ACI standard hook is cheaper?

OK, I'll bite. IMHO, a 90 degree is cheaper. It's just a gut feel and I doubt the difference is significant, but that's my take.
Fire away!

RE: Which ACI standard hook is cheaper?

Specify the one that will fit the best. But either way, the cost won't be affected.

RE: Which ACI standard hook is cheaper?

Cost of materials is roughly based on weight, but it's not really that simple. The estimation of rebar cost relies upon bar size, weight, handling and cutting issues, repetition, types of fabrication, and overall project size. Do not worry about which hook for pricing purposes. Design your building according to good practice.

Constructibility is the primary factor in getting the most economical building. The designed reinforcing should avoid conflicts and excessive congestion. The best designs usually use consistent joist, beam, slab, and column layout and schedules, without unnecessary complexity. Because of the way bars are bent and transported, avoid having similar members when identical ones will do. Do not try to work every extra pound of reinforcement or concrete out of members in the name of economy, unless you are working on a tall building where the weight adds up quickly as you move down the structure. If you want to get into it, consider the way bars will be assembled and placed to avoid making things more complicated than required.

Formwork labor and materials account for about half the cost of concrete construction, so consistent, modular formwork from level to level, and end to end within a level, generally minimizes costs.

RE: Which ACI standard hook is cheaper?

Please follow TX's advice. Architects make things complex, we simplify.

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