DIY

Calculate Concrete for Steps & Stairs

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate cubic yards of concrete needed for stairs. Enter rise, run, width, and number of steps.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

Calculating Concrete for Stairs
Building Code Requirements

Dimensões

Espelho: 16-18 cm. Piso: 25-32 cm. Fórmula de Blondel: 2 × espelho + piso = 60-65 cm. Para 2,70 m: 15-16 degraus de 17 cm. Todos iguais — variação causa tropeços. Ângulo ideal: 25-35°.

Volume

Escada de 4 degraus × 90 cm largura: ~0,3-0,5 m³ incluindo laje. Exterior: concreto C25 com armadura. No Brasil, NBR 9050 define acessibilidade (corrimão, piso tátil).

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Frequently asked questions

Quanto de concreto para 4 degraus?▾

90 cm largura: ~0,3-0,5 m³. 8-15 sacos de 50 kg.

Dimensões padrão?▾

Espelho: 16-18 cm. Piso: 25-32 cm. 2×espelho + piso ≈ 63 cm.

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →