Concrete Shear Friction Capacity (Interface Shear)
This calculation determines the shear friction capacity according to ACI 318 or CSA A23.3
Output:
- Definitions
- ϕv = Resistance factor for shear
- fc = Specified concrete strength (psi)
- fy = Specified reinforcing steel yield strength (ksi)
- λ = Concrete density modification factor; 1.0 for normal density concrete
- Avf = Area of reinforcing crossing the shear plane (in2)
- N = Axial load; compression positive (kip)
- ts = Slab / member thickness (in)
- b = Effective width of cross section (in)
- μ = Coefficient of friction
- Coefficient of friction
- Surface = Intentionally roughened
- μ = 1 λ = (1) (1) = 1
- Max permissible shear
- ϕVn,max = ϕv b ts * min( 0.2 fc , (480 + 0.08fc) , 1600 )/1000
- ϕVn,max = (0.75) (12) (12) * 0.88
- ϕVn,max = 95 kip
- Shear friction capacity
- ϕVn = ϕv μ (Avf fy + N) ≤ ϕVn,max
- ϕVn = (0.75) (1) [(0.31) (60) + (0)] ≤ 95
- ϕVn = (0.75) (1) (18.6) ≤ 95
- ϕVn = 13.95 kip
Notes: