I hope that some teacher can give me some advice on my brother's problems, and novices should not joke. "Floor reinforcement is equipped with 10 tertiary reinforcement, and the spacing is 150 double-l

I hope that some teacher can give me some advice on my brother's problems, and novices should not joke. "Floor reinforcement is equipped with 10 tertiary reinforcement, and the spacing is 150 double-layer two-way communication. ... 1.4*46d .。 . I've never seen a 90-degree hook count like this.

This 90-degree hook is easy to calculate, that is, the thickness of the plate is reduced by two protective layers. For example, the protective layer of 120mm plate buckle is 15*2=30mm, and the hook length is only 9cm. Besides, this is a three-grade steel reinforced bar, and there is no need to limit the length of the hook.