Fabl. Design
Foundation / Shallow foundation void

Crawl space

Definition

A short space between the ground and the first floor, enclosed by foundation walls, that gives access to plumbing, ducts, and wiring.

GradeLiving spaceCrawl space (2–4 ft)Vapor barrier
Fig. 261 — Crawl space: schematic studyNOT TO SCALE
Illustrative photograph of crawl space
Illustrative study — Crawl space · AI-generatedSAMPLE IMAGE

Structural & construction notes

Moisture is the main risk. Sealed or encapsulated crawl spaces with a ground vapor barrier are common in the humid Southeast.

Frequently Asked Questions

An educational reference. Project-specific design requires professional guidance.