Concrete Weight & Volume Calculator

def concrete_weight(length_m, width_m, thickness_m, density_kg_m3=2400, quantity=1, waste_pct=5):
    """
    Calculate volume and weight of concrete.

    length_m: Slab length (m)
    width_m: Slab width (m)
    thickness_m: Slab thickness/height (m)
    density_kg_m3: Concrete density (kg/m³)
    quantity: Number of identical slabs
    waste_pct: Margin for site wastage (%)
    """
    if any(val <= 0 for val in [length_m, width_m, thickness_m, density_kg_m3, quantity]):
        raise ValueError("Dimensions, density, and quantity must be positive.")

    nominal_vol = length_m * width_m * thickness_m * quantity
    total_vol = nominal_vol * (1 + waste_pct / 100.0)
    
    nominal_weight_kg = nominal_vol * density_kg_m3
    total_weight_kg = total_vol * density_kg_m3
    total_weight_ton = total_weight_kg / 1000.0

    return {
        "nominal_volume_m3": round(nominal_vol, 3),
        "total_volume_m3": round(total_vol, 3),
        "total_weight_kg": round(total_weight_kg, 2),
        "total_weight_ton": round(total_weight_ton, 3)
    }

# Example
result = concrete_weight(
    length_m=5,
    width_m=4,
    thickness_m=0.15,
    density_kg_m3=2400,
    quantity=1,
    waste_pct=5
)

print(f"Total Volume: {result['total_volume_m3']} m³")
print(f"Total Weight: {result['total_weight_ton']} Metric Tons")

function [total_vol, total_weight_ton] = concrete_weight(L, W, T, D, Q, waste_pct)
    % Concrete Volume & Weight Calculator
    % L = Length (m), W = Width (m), T = Thickness (m)
    % D = Density (kg/m^3), Q = Quantity, waste_pct = Waste (%)

    if L <= 0 || W <= 0 || T <= 0 || D <= 0 || Q <= 0
        error('All inputs must be greater than zero.');
    end

    nominal_vol = L * W * T * Q;
    total_vol = nominal_vol * (1 + waste_pct / 100);
    total_weight_kg = total_vol * D;
    total_weight_ton = total_weight_kg / 1000;
end

% Example
[V, M] = concrete_weight(5, 4, 0.15, 2400, 1, 5);
fprintf('Total Volume: %.3f m^3\n', V);
fprintf('Total Weight: %.3f Metric Tons\n', M);