Soil Movement and Erosion Control Plandocx rcd 5 7 2026

•​ Pad footing excavations for one each of footings F2.0, F2.5, F4.0, and F4.5 per the structural drawings •​ Slab field excavation to subgrade elevation to allow for compacted stone base, vapor barrier, and concrete slab Design Assumptions Parameter Value / Basis Frost depth 36" below finished grade (NJ / Essex County standard) Wall footing dimensions 2'-0" wide × 1'-0" thick (per Wall Footing Schedule) Stem wall 8" CMU on top of wall footing, up to grade Working room (over-dig) 1'-0" each side of footing for forming and access Existing asphalt thickness 2" (field-measured) Existing stone base Approx. 4"–6" (to be field-verified at excavation) Slab buildup 4" compacted stone + vapor barrier + 4" concrete slab Part A. Soil Movement Calculation (Comment 5.10) Excavation Volume Calculation 1. Wall Footing Trench Three sides of new foundation: 8' + 18.5' + 8' = 34.5 linear feet Trench width: 2' (footing) + 1' working room each side = 4' Excavation depth to bottom of footing: 3'-0" (frost depth) Volume: 34.5 LF × 4 ft × 3 ft = 414 cubic feet 2. Pad Footings Each pad footing is dug as a square hole sized to the footing plus 1' working room on each side, to a depth of 3'-0". Mark Footing Size Excavation Plan Depth Volume (CF) F2.0 2' × 2' 4' × 4' 3' 48 F2.5 2' × 2' 4' × 4' 3' 48 F4.0 4' × 4' 6' × 6' 3' 108 F4.5 4'-6" × 4'-6" 6'-6" × 6'-6" 3' 127