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Demo Worksheet Cont'd Task#TTT Page 6 of 141 <br /> BULLDOZER RIPPING WORK <br /> Task description: King I-Rip 12"in upper facility area <br /> Site: King Coal Mine Permit Action: RN8 Permit/Job#: C1981035 <br /> PROJECT IDENTIFICATION <br /> Task#: 002 State: Colorado Abbreviation: None <br /> Date: 3/25/2022 County: La Plata Filename: C035-002 <br /> User: JHB <br /> Agency or organization name: DRMS <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D8T-8SU Horsepower: 310 <br /> Ripper Attachment: 3-Shank Ripper Shift Basis: 1 per day <br /> Data Source: (CRG) <br /> Cost Breakdown: <br /> Utilization% <br /> Ownership Cost/Hour: $97.46 NA <br /> Operating Cost/Hour: $97.63 100 <br /> Ripper Ownership Cost/Hour: $15.19 NA <br /> Ripper Operating Cost/Hour: $9.94 100 <br /> Operator Cost/Hour: $41.30 NA <br /> Total Unit Cost/Hour: $261.52 <br /> Total Fleet Cost/Hour: $261.52 <br /> MATERIAL QUANTITIES <br /> Alternate Methods: <br /> Seismic: NA Bank Volume: NA BCY NA <br /> Area: 1.96 acres Rip Depth(ft): 1.00 Volume: 3,162 BCY or CCY <br /> Source of estimated quantity: Map King I-007 <br /> HOURLY PRODUCTION <br /> Seismic: <br /> Seismic Velocity: NA feet/second <br /> Area: <br /> Average Ripping Depth: 1.00 feet/pass <br /> Average Ripping Width: 7.08 feet/pass <br /> Average Ripping Length: 300.00 feet/pass <br /> Average Dozer Speed: 88.00 feet/minute <br /> Average Maneuver Time: 0.25 minutes/pass <br /> Production per unit area: 0.800 acres/hour <br /> Job Condition Correction Factors <br /> Unadjusted Hourly Unit Production: 0.800 Acres/hr <br /> Site Altitude: 7,400 feet <br /> Altitude Adj: 1.00 (CAT HB) <br /> Job Efficiency: 0.83 (1 shift/day) <br /> Net Correction: 0.83 multiplier <br /> Adjusted Hourly Unit Production: 0.66 Acres/hr <br /> Adjusted Hourly Fleet Production: 0.66 Acres/hr <br /> CIRCES Cost Estimating Software <br />