Embankment Grading Earth embankment spreading, shaping, compacting and watering, and finish shaping. Use $15,000 as a minimum job charge, loading or hauling of earth fill not included.
Spreading and shaping. Spread and shape earth from loose piles, based on using a D-8 tractor.
        6" to 10" lifts (164 CY per hour) TO@.006 CY — .34 1.02 1.36
Compacting and watering. (Add for cost of water from below.) CY per hour shown is for a 3-man crew. Based on using a self-propelled 100 HP vibrating roller and a 3,500 gallon truck. Productivity assumes 3 passes at 7' wide.
        6" lifts (500 CY per hour) C3@.006 CY — .28 .28 .56
Compacting with a sheepsfoot roller towed behind a D-7 tractor and a 3,500 gallon truck. Productivity assumes 3 passes at 5' wide
        6" lifts (185 CY per hour) C3@.016 CY — .76 1.15 1.91
        8" lifts (245 CY per hour) C3@.012 CY — .57 .87 1.44
Cost of water for compacted earth embankments. Based on water at $2.50 per 1,000 gallons and 66 gallons per cubic yard of compacted material. Assumes optimum moisture at 10%, natural moisture of 2% and evaporation of 2%. Placed in conjunction with compaction shown above.
    Cost per CY of compacted embankment — CY .32 — — .32
Finish shaping of embankments. Earth embankment slopes and swales up to 1 in 4 incline. Based on using a 150 HP grader and a 15-ton self-propelled rubber tired roller. SY per hour shown is for a 3-man crew.
    (200 SY per hour) SS@.016 SY — .82 .94 1.76
Finish shaping of embankments with a D-8 tractor (150 SY per hour) TO@.007 SY — .39 1.19 1.58
Finish shaping of embankment slopes and swales by hand. SY per hour shown is for 1 man.
    Slopes up to 1 in 4 (16 SY per hour) CL@.063 SY — 2.55 — 2.55
    Slopes over 1 in 4 (12.5 SY per hour) CL@.080 SY — 3.24 — 3.24
Trench Excavation and Backfill These costs and productivity are based on utility line trenches and continuous footings where the spoil is piled adjacent to the trench. Linear feet (LF), cubic yards (CY), square feet (SF), or square yards (SY) per hour shown are based on a 2-man crew. Increase costs by 10% to 25% when spoil is loaded in trucks. Hauling, shoring, dewatering or unusual conditions are not included.
12" wide bucket, for 12" wide trench. Depths 3' to 5'. Equipment is a wheel loader with 1 CY bucket and integral backhoe. Use $400 as a minimum job charge.
    Light soil (60 LF per hour) S1@.033 LF — 1.60 .66 2.26
    Medium soil (55 LF per hour) S1@.036 LF — 1.74 .72 2.46
    Heavy or wet soil (35 LF per hour) S1@.057 LF — 2.76 1.15 3.91
18" wide bucket, for 18" wide trench. Depths 3' to 5'. Equipment is a wheel loader with 1 CY bucket and integral backhoe. Use $400 as a minimum job charge.
    Light soil (55 LF per hour) S1@.036 LF — 1.74 .72 2.46
    Medium soil (50 LF per hour) S1@.040 LF — 1.93 .81 2.74
    Heavy or wet soil (30 LF per hour) S1@.067 LF — 3.24 1.35 4.59
24" wide bucket, for 24" wide trench. Depths 3' to 5'. Equipment is a wheel loader with 1 CY bucket and integral backhoe. Use $400 as a minimum job charge.
    Light soil (50 LF per hour) S1@.040 LF — 1.93 .81 2.74
    Medium soil (45 LF per hour) S1@.044 LF — 2.13 .89 3.02
    Heavy or wet soil (25 LF per hour) S1@.080 LF — 3.87 1.61 5.48
Truck-mounted Gradall with 1 CY bucket. Use $700 as a minimum job charge.
    Light soil (40 CY per hour) S1@.050 CY — 2.42 2.22 4.64
    Medium soil (34 CY per hour) S1@.059 CY — 2.85 2.62 5.47
    Heavy or wet soil (27 CY per hour) S1@.074 CY — 3.58 3.28 6.86
    Loose rock (23 CY per hour) S1@.087 CY — 4.21 3.86 8.07
Crawler-mounted hydraulic backhoe with 3/4 CY bucket. Use $500 as a minimum job charge.
    Light soil (33 CY per hour) S1@.061 CY — 2.95 2.83 5.78
    Medium soil (27 CY per hour) S1@.074 CY — 3.58 3.43 7.01
    Heavy or wet soil (22 CY per hour) S1@.091 CY — 4.40 4.22 8.62
    Loose rock (18 CY per hour) S1@.112 CY — 5.42 5.20 10.62

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