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ยง 28-701.1 Update.
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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
Chapter 19: Concrete
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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.
1809.6 Seismic requirements.
For structures assigned to Seismic Design Category C or D, provisions of ACI 318 18.13, as modified by Section 1908 of this code, shall apply when not in conflict with the provisions of Section 1809 of this code. Concrete shall have a specified compressive strength of not less than 3,000 psi (20.68 MPa) at 28 days.
   Exceptions:
      1.   Group R or U occupancies of light-framed construction and two stories or fewer in height are permitted to use concrete with a specified compressive strength of not less than 2,500 psi (17.2 MPa) at 28 days.
      2.   One and two-family dwellings not more than three stories in height are not required to comply with the provisions of ACI 318, Section 18.11, as modified by Section 1908 of this code.
Section BC 1810: Deep Foundations
1810.1 Scope.
Deep foundation elements, including but not limited to timber piles, precast concrete piles, structural steel piles, cast-in-place concrete piles, caisson piles, drilled displacement piles, composite piles, and helical piles, shall comply with Section 1810; driven piles shall comply with Section 1811; cast-in-place concrete piles shall comply with Section 1812; composite piles shall comply with Section 1813; and helical piles shall comply with Section 1814.
1810.2 Deep foundations โ€“ general requirements.

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