NM CID GS-4 Practice Questions - New Mexico CID GS-4 Concrete, Cement, Walkways And Driveways Examination Exam

IRC 2021 Section R403.1 requires concrete footings to be supported on:

Frozen soil, provided the pour is completed the same day Undisturbed natural soils or engineered fill Loose backfill from the previous day's excavation A layer of topsoil for drainage

Correct Answer:

Undisturbed natural soils or engineered fill

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