Calculadora de Laje de Concreto Grátis

Descubra quanto concreto você precisa para uma laje. Informe as dimensões e a espessura para obter a quantidade exata com margem de desperdício.

feet
feet
inches

Volume (Jardas Cúbicas)

2.96 cu yd

Área da Laje240.0 sq ft
Volume (Pés Cúbicos)80.00 cu ft
Com 10% de Desperdício3.26 cu yd

Volume (Cubic Yards) vs Slab Length

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Formula

## How to Calculate Concrete for a Slab ### Formula **Volume (cu ft) = Length (ft) x Width (ft) x Thickness (ft)** **Volume (cu yd) = Volume (cu ft) / 27** First convert thickness from inches to feet by dividing by 12. Standard slab thicknesses are 4 inches for patios and walkways, 4-6 inches for driveways, and 6-8 inches for heavy-duty applications.

Exemplo Resolvido

A patio slab measuring 20 ft by 12 ft with a 4-inch thickness.

  1. 01Convert thickness: 4 inches / 12 = 0.333 ft
  2. 02Volume = 20 × 12 × 0.333 = 80 cu ft
  3. 03Cubic yards = 80 / 27 = 2.96 cu yd
  4. 04With 10% waste = 2.96 × 1.10 = 3.26 cu yd
  5. 05Order 3.5 cubic yards from the concrete plant.