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Title 28: New York City Construction Codes
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§ 28-701.1 Update.
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Chapter 2: Definitions
Chapter 3: Use and Occupancy Classification
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Chapter 15: Roof Assemblies and Rooftop Structures
Chapter 16: Structural Design
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Chapter 18: Soils and Foundations
Section BC 1801: General
Section BC 1802: Definitions
Section BC 1803: Geotechnical Investigations and Material Classifications
Section BC 1804: Excavation, Grading and Fill
Section BC 1805: Dampproofing and Waterproofing
Section BC 1806: Allowable Load-bearing Values of Soils and Rock
Section BC 1807: Retaining Walls and Other Retaining Structures
Section BC 1808: Reserved
Section BC 1809: Shallow Foundations
1809.1 General.
1809.2 Stepped footings.
1809.3 Depth of footings.
1809.3.1 Frost protection.
1809.3.2 Foundations on frozen soil.
1809.4 Shallow foundations at different levels.
1809.5 Shallow foundations.
1809.5.1 Design.
1809.5.1.1 Design loads.
1809.5.1.2 Vibratory loads.
1809.5.1.3 Shifting or moving soils.
1809.5.2 Concrete shallow foundations.
1809.5.2.1 Concrete strength.
1809.5.2.2 Footing seismic ties.
1809.5.2.3 Plain concrete footings.
1809.5.2.4 Placement of concrete.
1809.5.2.5 Protection of concrete.
1809.5.3 Masonry-unit footings.
1809.5.4 Steel grillage footings.
1809.5.5 Timber footings.
1809.5.6 Wood foundations.
1809.5.7 Pier foundations.
1809.5.7.1 Dimensions and height.
1809.5.7.2 Concrete design.
1809.5.7.3 Reinforcement placement.
1809.5.7.4 Concrete placement.
1809.5.7.5 Steel shell.
1809.5.7.6 Dewatering.
1809.5.8 Foundation walls.
1809.5.8.1 Foundation wall thickness.
1809.5.8.1.1 Thickness based on walls supported.
1809.5.8.2 Foundation wall drainage.
1809.6 Seismic requirements.
Section BC 1810: Deep Foundations
Section BC 1811: Driven Deep Foundations
Section BC 1812: Cast-in-Place Concrete Piles
Section BC 1813: Composite Piles
Section BC 1814: Helical Piles
Section BC 1815: Permanent Prestressed Rock and Soil Anchors
Section BC 1816: Liquefaction Analysis
Section BC 1817: Underpinning and Alternate Methods of Support of Buildings and Adjacent Property
Section BC 1818: Geotechnical Peer Review
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Chapter 29: Plumbing Systems
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Chapter 31: Special Construction
Chapter 32: Encroachments Into the Public Right-of-Way
Chapter 33: Safeguards During Construction or Demolition
Chapter 34: Reserved
Chapter 35: Referenced Standards
Appendix A: Reserved
Appendix B: Reserved
Appendix C: Reserved
Appendix D: Fire Districts
Appendix E: Supplementary Accessibility Requirements
Appendix F: Rodent Proofing
Appendix G: Flood-Resistant Construction
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1809.5.7.6 Dewatering.
Where piers are carried to depths below the groundwater level, the piers shall be constructed by a method that will provide accurate preparation and inspection of the subgrade in dry conditions.
1809.5.8 Foundation walls.
Concrete and masonry foundation walls shall be designed in accordance with Chapter 19 or 21, respectively.
1809.5.8.1 Foundation wall thickness.
The minimum thickness of concrete and masonry foundation walls shall comply with Section 1809.5.8.1.1.
1809.5.8.1.1 Thickness based on walls supported.
The thickness of foundation walls shall not be less than the thickness of the wall supported, except that foundation walls of at least 8 inch (203.2 mm) nominal width are permitted to support brick-veneered frame walls and 10 inch wide (254 mm) cavity walls.
1809.5.8.2 Foundation wall drainage.
Foundation walls shall be designed to support the weight of the full hydrostatic pressure of undrained backfill unless a drainage system is installed in accordance with Sections 1805.4.2 and 1805.4.3.

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