Sunrooms By Brady Sunrooms By Brady

November 16, 2009

Back-Fill

Filed under: Glossary — Sunrooms by Brady @ 5:20 pm

When a hole is dug for a foundation more material is removed than is necessary for the foundation itself so that there is room for workers and equipment.  Once the foundation is complete the soil must be placed back into the hole.  This is called back-filling.  Most often, simply pushing the soil back into the hole is unacceptable because over time it will settle, leaving a depression.  To avoid this, the soil is replaced in layers (called lifts) and compacted with vibrating machines or heavy rollers.  Often water is used to augment the process

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