What Are the 3 Types of Foundations? Types of Foundations

• Well Foundation: Used below water level for bridges.
• Types of Footings:
  • Wall footing
  • Strip footing
  • Individual footing (pad foundation)
• Pile Foundations: Used to reduce cost and transmit loads beyond shallow reach.

Slab Foundation

• Requires least site work.
• Begins with concrete footers below grade.
• Advantages include low maintenance and cost.

Basement Foundations

• Dug 8 feet deep.
• Provides added space and can be conditioned.
• Modern homes use poured concrete.

Shallow Foundations

• More width than depth, cheaper and faster.
• Used for smaller buildings, homes, and wood structures.
• Heavy buildings need deep foundations.

Raft and Slab on Grade

• Raft: Reinforced slab that spreads load over area.
• Slab on Grade: Rests directly on the ground surface.

Footings and Foundation Types

• Footing: Delivers load to soil.
• Four Types of Foundations:
  • Full basement
  • Submerged crawl space
  • Flush crawl space
  • Slab on grade