Section 1905.6.2 is amended to read as follows:
1905.6.2 Seismic Design Categories C, D, E and F. Structures assigned to Seismic Design Category C, D, E or F shall not have elements of structural plain concrete, except as follows:
1.
Concrete used for fill with a minimum cement content of two (2) sacks of Portland cement per cubic yard.
2.
Isolated footings of plain concrete supporting pedestals or columns are permitted for buildings of light-frame construction, provided the projection of the footing beyond the face of the supported member does not exceed the footing thickness and the footing supports a single roof or floor.
3.
Plain concrete footings supporting walls are permitted provided the footings have at least two continuous longitudinal reinforcing bars. Bars shall not be smaller than No. 4 and shall have a total area of not less than 0.002 times the gross cross-sectional area of the footing. A minimum of one bar shall be provided at the top and bottom of the footing. Continuity of reinforcement shall be provided at corners and intersections.
In detached one- and two-family dwellings three stories or less in height and constructed with stud-bearing walls, plain concrete footings with at least two continuous longitudinal reinforcing bars not smaller than No. 4 are permitted to have a total area of less than 0.002 times the gross cross-sectional area of the footing.
(Ord. 25-5, 11/25/2025)