<p>This Architectural Drawing is AutoCAD 2d drawing of Backfill details in AutoCAD, dwg file. Backfilling is <strong>the process of reusing or replacing the soil that is removed during the excavation of foundations, ground bearing slabs or other groundworks to support and strengthen a structure</strong>. It protects foundations and forms part of the substructure of slabs, roadways, walkways and other groundwork elements.</p>