Subsection 1807.1.4 is amended to read as follows:

1807.1.4 Permanent wood foundation systems. Permanent wood foundation systems shall be designed and installed in accordance with AWC PWF. Lumber and plywood shall be treated in accordance with AWPA U1 (Commodity Specification A, Use Category 4B and Section 5.2) and shall be identified in accordance with Section 2303.1.9.1. Permanent wood foundation systems shall not be used for structures assigned to Seismic Design Category D, E or F.

Subsection 1807.1.6 is amended to read as follows:

1807.1.6 Prescriptive design of concrete and masonry foundation walls. Concrete and masonry foundation walls that are laterally supported at the top and bottom shall be permitted to be designed and constructed in accordance with this section. Prescriptive design of foundation walls shall not be used for structures assigned to Seismic Design Category D, E or F.

Footnotes for Table 1809.7 Prescriptive Footings Supporting Walls of Light-Frame Constructions is amended to read as follows:

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm

(a) Depth of footings shall be in accordance with Section 1809.4.

(b) The ground under the floor shall be permitted to be excavated to the elevation of the top of the footing.

(c) See Section 1905 for additional requirements for concrete footings of structures assigned to Seismic Design Category C, D, E or F.

(d) For thickness of foundation walls, see Section 1807.1.6.

(e) Footings shall be permitted to support a roof in addition to the stipulated number of floors. Footings supporting roof only shall be as required for supporting one floor.