I have a situation where I have shear, axial, and moment and the program doesn't allowed me to use ACI318-14 chapter 17. I couldn't find in the code the section were it mentioned that is not allowed to use shear. The only reason why I want to verify this is because I am trying to use small embedment. Similar situation happens on the concrete to concrete extension connection where the program is forced to design for yield.
Also, when using shear-friction reinforcement shall be anchored to develop fy per ACI318-14 Sec. 22.9.5.1 which bond strength can achieved this with a small embedment.
Hi Diego,
When a shear force is introduced in the Concrete-to-Concrete module, this module automatically assumes a shear friction interaction. To calculate the development length required for a shear interface application per ACI 318-19 Ch 22 Shear Friction Theory, you can either reference ACI 318-19 Chapter 25 or Chapter 17 (design for yield using anchoring to concrete provisions which is satisfied if the nominal steel strength is less than the calculated bond strength and tension concrete strength). The Chapter 17 approach can sometimes result in a shallower embedment depth, however, you may consider designing your connection using Hilti’s Rebar Method which you can find more information here.
Regards,
Ashley