# Basic Hook development length using CSA A23.3 provisions

I have 8" thick reinforced concrete walls and I would like to anchor my horizontal corner reinforcement with only 1 hook (I have only 1 layer of reinforcement in both walls). The problem is CSA A23.3 (same for ACI if I'm not mistaken) restricts minimum hook length to 6" or $8d_b$ = 120mm = 5" in my case.

If I want to put my reinforcement in the middle of my wall, there is no way for me to get that 6 inches. Can I simply assume that the bar is held by my vertical reinforcement (see picture)?

• If i want to put my reinforcement in the middle of my wall, there is no way for me to get that 6 inches. Not quite sure what you mean here. Do you mean that you want the reinforcement to be in the middle of the thickness of the wall? A sketch of a wall elevation might help illustrate your case. – grfrazee Mar 21 '16 at 17:50
• Also, looking at CSA A23.1-09, Section 6.6.2.2(b), a 90-deg hook needs $12d_b$ at the free end. – grfrazee Mar 21 '16 at 17:58