Input
Results
Ka = tan²(45 − φ/2)—
σh at base (γH·Ka + q·Ka)—
Tmax per layer (max σh·Sv)—
Pullout resistance Pr = α·F*·σv·b·2·Le—
FS pullout = Pr / Tmax—
Required strip thickness (yield)—
Method
Tmax_i = σh_i · Sv where σh = Kr·σv + Δσh (here Kr ≈ Ka). σv = γ·z + q. Pullout: Pr = α·F*·σv·b·2·Le. Yield: t_req = Tmax / (b·Fy/1000) plus sacrificial allowance. FS_po ≥ 1.5 typical.