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How does ideCAD control shear wall reinforcement limits according to ACI 318-19?

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According to ACI 11.6.1, minimum values of reinforcement ratios are given below.

Minimum The minimum value of distributed longitudinal reinforcement ratio ρ_l is 0.0025

Minimum The minimum value of distributed transverse reinforcement ratio ρ_t is 0.0025

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According to ACI 18.10.2.1, the minimum value of distributed longitudinal reinforcement ratio, ρ_l, and distributed transverse reinforcement ratio, ρ_t, should be 0.0025, except that if V_u < λ√f_c‘A_{cv ,} ρ_t can be reduced to the values in ACI 11.6 explained above. Maximum reinforcement spacing in each direction in structural walls is 18 inches.

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According to ACI 18.10.2.4; , walls or wall piers with h_w/l_w ≥ 2.0 that are effectively continuous from the base of the structure to the top of the wall and are designed to have a single critical section for flexure and axial loads should have longitudinal reinforcement at the ends of a vertical wall segment that satisfies conditions given below;

• minimum longitudinal reinforcement ratio in the area 0.15l_w from the end of a vertical wall segment , and over a width equal to the wall thickness , should be 6√f_c‘/f_y.

• longitudinal Longitudinal reinforcement should extend vertically above and below the critical section at least the greater of l_w and M_u/3V_u.

• no No more than 50 percent of the longitudinal reinforcement should be terminated at any one section.

According to ACI 18.10.4.3, shear walls should have distributed shear reinforcement in two orthogonal directions in the plane of the wall. If h_w/l_w ≤ 2.0, the reinforcement ratio ρ_l should be at least the reinforcement ratio ρ_t.

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