construction

Foundation

The lowest structural element of a building that transfers loads from the structure to the ground.

A foundation distributes a building's weight to the earth. It must resist settling, shifting, and moisture intrusion.

Slab-on-grade: Concrete slab poured directly on compacted soil (simplest, cheapest)
Crawl space: Raised foundation with 18–48" clearance underneath
Full basement: 8+ ft walls below grade (most expensive, adds livable space)
Pier/pile: Columns driven deep into load-bearing soil/rock (soft soil, waterfront)

Must extend below frost line (varies by region: 12" in Texas, 48" in Minnesota). Undersized footings cause cracking and settling.

Related Calculators

A measurement of area in square feet, commonly used for rooms, homes, and land in the United States.

The amount of concrete needed for a project, typically measured in cubic yards or cubic meters.

A unit of lumber volume equal to a piece 1 foot long, 1 foot wide, and 1 inch thick (144 cubic inches).

Steel bars embedded in concrete to increase tensile strength, since concrete is strong in compression but weak in tension.

A paste of cement, sand, and water used to bind bricks, blocks, or stones in masonry construction.

A construction panel made of gypsum plaster pressed between two sheets of paper, used for interior walls and ceilings.