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§ 18-29-306.2.3 — Soft loadbearing materials

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-29-306.2.3

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18-29-306.2.3 Soft loadbearing materials.

If soft materials of poor loadbearing qualities are found at the bottom of the trench, stabilizing shall be achieved by overexcavating a minimum of two pipe diameters and backfilling to the installation level of the bottom of the pipe with fine gravel, crushed stone or a concrete foundation. The concrete foundation shall be bedded with sand tamped in place so as to provide uniform loadbearing support for the pipe between joints.