Concrete Slab-on-Grade Assemblies Typical costs including fine grading, edge forms, 3,000 PSI concrete, wire mesh, finishing and curing.
4" thick 4' x 6' equipment pad
Craft@Hrs Unit Material Labor Equipment Total
  Hand trimming and shaping, 24 SF CL@.512 LS — 20.70 — 20.70
  Lay out, set and strip edge forms, 20 LF, 5 uses C8@1.30 LS 12.40 60.10 — 72.50
  Place .006" polyethylene vapor barrier 24 SF CL@.048 LS 1.92 1.94 — 3.86
  Place W2.9 x W2.9 x 6" x 6"
        mesh, 24 SF RB@.097 LS 10.60 6.21 — 16.81
  Place ready-mix concrete, from chute .3 CY CL@.127 LS 35.10 5.14 — 40.24
  Finish concrete, broom finish CM@.591 LS — 29.80 — 29.80
  Cure concrete, curing paper CL@.124 LS 1.04 5.02 — 6.06
    Total job cost for 4" thick 24 SF pad —@2.80 LS 61.06 128.91 — 189.87
    Cost per SF for 4" thick 24 SF pad —@.116 SF 2.54 5.37 — 7.91
    Cost per CY of 4" thick concrete, .3 CY job —@9.33 CY 204.00 467.00 — 671.00
8" thick 10' x 10' equipment pad
  Hand trimming and shaping, 100 SF CL@2.79 LS — 113.00 — 113.00
  Lay out, set and strip edge forms, 40 LF, 5 uses C8@3.28 LS 32.00 152.00 — 184.00
  Place .006" polyethylene vapor barrier 100 SF CL@.200 LS 8.00 8.09 — 16.09
  Place W2.9 x W2.9 x 6" x 6" mesh, 100 SF RB@.400 LS 44.00 25.60 — 69.60
  Place ready-mix concrete, from chute 2.5 CY CL@1.08 LS 293.00 43.70 — 336.70
  Finish concrete, broom finish CM@2.11 LS — 106.00 — 106.00
  Cure concrete, curing paper CL@.515 LS 4.10 20.80 — 24.90
    Total job cost for 8" thick 100 SF pad —@10.4 LS 381.10 469.19 — 850.29
    Cost per SF for 8" thick 100 SF job —@.104 SF 3.81 4.69 — 8.50
    Cost per CY of 8" thick concrete, 2.5 CY job —@4.15 CY 152.00 188.00 — 340.00
Note: Ready-mix concrete used in both examples assumes a minimum of 10 cubic yards will be delivered (per load) with the excess used elsewhere on the same job.
    Add for each CY less than 10 delivered — CY 30.00 — — 30.00
Floor Slab Assemblies Typical reinforced concrete slab-on-grade including excavation, gravel fill, forms, vapor barrier, wire mesh, 3,000 PSI concrete, finishing and curing.
  3,000 PSI concrete — CY 223.00 — — 223.00
  4" thick slab —@.025 SF 2.77 1.20 .13 4.10
  5" thick slab —@.026 SF 3.13 1.26 .13 4.52
  6" thick slab —@.027 SF 3.49 1.31 .14 4.94
Detailed cost breakdown slab as described above:
4" thick 100' x 75' slab
  Grade sandy loam site using a D-4 tractor, 140 CY, balanced job, (no import or export) S1@2.66 LS — 129.00 78.00 207.00
  Buy and spread 6" crushed rock base using a D-4 tractor, 140 CY S1@15.8 LS 5,190.00 764.00 464.00 6,418.00
  Lay out, set and strip edge forms, 350 LF, 5 uses C8@19.6 LS 217.00 906.00 — 1,123.00

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