Construction Calculators

Frequently Asked Questions

How do I estimate concrete needed for a slab?

Multiply length × width × thickness (in consistent units) to get volume, then convert to cubic yards (divide cubic feet by 27). Add 5-10% for waste and spillage.

How many bricks do I need for a wall?

Calculate wall area (length × height), subtract openings, then divide by the area covered by one brick plus mortar joint. A standard modular brick covers about 0.27 sq ft including mortar.

What roof pitch is walkable?

Roofs with a pitch up to 6:12 (26.6°) are generally considered walkable with caution. Steeper pitches require harnesses, roof jacks, or professional equipment.