31 23 00
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Excavation and Fill
Includes excavation and fill for foundations, structures, pavement, railways, ditches, channels, culverts, drains, and utilities.
May Include foundation and underslab drainage.
Alternate Terms/Abbreviations flowable fill: controlled density fill, unshrinkable fill, flowcrete, liquid dirt, fly ash slurry, flowable mortar, plastic soil cement, soil replacement, lean mix backfill, controlled low strength material.

31 23 00 Excavation and Fill
31 23 13 Subgrade Preparation
31 23 16 Excavation
31 23 19 Dewatering
31 23 23 Fill
31 23 33 Trenching and Backfilling