IRC 2021 · Model
Chapter 4: Foundations
48 sections in this chapter of the IRC 2021 model text — not Model's amended edition.
407.1 Wood column protection Wood columns shall be protected against decay as set forth in Section R317.
Plain-English guides for this chapter
- Crawl Space Ventilation — IRC R408.1, R408.2, IRC R408.2
- Sump Pits & Pumps — IRC R405.1, R405.2.3, IRC R405.2.3, P3303
- Anchor Bolts — IRC R403.1.6, IRC R403.1.6
- Retaining Walls — IRC R105.2, IRC R404.4
- Deck Footings — IRC R403.1.4, R507.3.2, IRC R403.1, R507.3
- Driveway Slope — IRC R401.3, Local public works / zoning standards (not IRC)
- Vapor Retarders — IRC R702.7, IRC R702.7
- 407.1Wood column protection
- R401.1Application
- R401.2Requirements
- R401.3Drainage
- R401.4Soil tests
- R402.1Wood Foundations
- R402.2Concrete
- R402.3Precast concrete
- R403.1General
- R403.1.1Minimum size
- R403.1.2Continuous footing in Seismic Design Categories D 0 , D 1 and D 2
- R403.1.3Footing and stem wall reinforcing in Seismic Design Categories D 0 , D 1 and D 2
- R403.1.3.1Concrete stem walls with concrete footings
- R403.1.4Minimum depth
- R403.1.4.1Frost protection
- R403.1.6Foundation anchorage
- R403.1.6.1Foundation anchorage in Seismic Design Categories C, D 0 , D 1 and D 2
- R403.2Footings for wood foundations
- R403.3Frost-protected shallow foundations
- R403.4Footings for precast concrete foundations
- R404.1Concrete and masonry foundation walls
- R404.1.1Design required
- R404.1.2Design of masonry foundation walls
- R404.1.3Concrete foundation walls
- R404.1.5Foundation wall thickness based on walls supported
- R404.1.6Height above finished grade
- R404.1.7Backfill placement
- R404.1.8Rubble stone masonry
- R404.1.9Isolated masonry piers
- R404.2Wood foundation walls
- R404.3Wood sill plates
- R404.4Retaining walls
- R405.1Concrete or masonry foundations
- R405.1.1Precast concrete foundation
- R405.2Wood foundations
- R406.1Concrete and masonry foundation dampproofing
- R406.2Concrete and masonry foundation waterproofing
- R406.3Dampproofing for wood foundations
- R406.4Precast concrete foundation system dampproofing
- R407.1Wood column protection
- R407.2Steel column protection
- R408.1Moisture control
- R408.2Openings for under-floor ventilation
- R408.3Unvented crawl space
- R408.4Access
- R408.5Removal of debris
- R408.6Finished grade
- R408.7Flood resistance
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