Calculadora de armadura viga/losa/pilar (GB 50010)

Beam / Slab / Column Rebar Calculator (GB 50010)

Singly reinforced flexural estimate per GB 50010: required A_s, ratio checks and bar suggestions (Φd@s for slabs).

1. Choose beam / slab / column and material grades
2. Beam: b×h and M (optional V tip); slab: thickness and M per meter; column: N and optional M

• α_s = M/(f_c b h₀²), ξ = 1−√(1−2α_s), A_s = f_c b ξ h₀/f_y
• Compare with ρ_min/ρ_max; column uses max(ρ_minA, flexure A_s)

Preliminary only—final drawings need a licensed engineer. Runs locally in your browser.