Sec. 32-159. Subgrade — Compaction

The top eight (8) inches of soil in cut, or the required Class 2 fill sections to be used as subgrade for support of patios, building floor slabs, driveways, parking pads and lots, sidewalks and other structures which would not be especially impaired by moderate settlement shall be compacted, or recompacted, to at least ninety percent (90%) of maximum density as determined by the Standard Proctor test.