OBRAS ONSITE · free site calculator

Brick & Block Calculator

Wall area in, order out - bricks or 200-series blocks, mortar bags, and core-fill concrete for reinforced blockwork.

The wall

Wall length (m) Wall height (m) Openings total (m²) Type Waste

Rates: bricks 48.5/m² (single skin, 10 mm joints), blocks 12.5/m². Mortar: ~1×20 kg premix bag per 25 bricks / per 10 blocks. Core fill (fully cored 200 series) ≈ 0.011 m³ per block. Budget numbers - confirm with your supplier and the structural drawings.

Blocklaying SWMS & pack in the Core Construction Trades pack · All free tools →

Want a person to look at it?

The tools above are free and yours to use. When you need the paperwork behind them reviewed by someone who has run sites, Obras HSE Services is a live consulting business in south-east Queensland.

SWMS review service — a marked-up review showing what is missing and why it matters.
Construction HSE health check — an independent look at what is in place and what carries exposure.
All Obras HSE Services — scoped and priced before anything starts.