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a <br /> Colorado Division of Minerals and Geology <br /> ESTIMATING FORM - BULLDOZER RIPPING <br /> Task #: 60 Prep. by: SLB Task File Name: C017-60 <br /> Date: 03/16/94 Permit #: C-81-017 Mine: Coal Basin Mines <br /> Permit Action: NA <br /> ------------- k-------....---------------------------- <br /> Task Description: Rip remaining road surfaces prior tc revegetation <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D8L Horsepower: 335 <br /> Blade Type: Semi-Universal ----- <br /> Attachment #1: ROPS Cab Shift Basis: 1/day <br /> Attachment A2: 3-shank ripper ----- <br /> Cost/Hr Breakdown: Utilization % (code Oyu) <br /> ownership = $51.87 N/A <br /> operating/overhaul - dozer = $43.64 100 <br /> -ripper = $4.54 100 <br /> operator = $21.58 N/A <br /> Total eqpt. unit cost/hr = $121.62 . Total fleet cost/hr: $121.62 <br /> MATERIAL QUANTITIES <br /> - ------- Selected Selected method Area <br /> Seismic Load Bank ---- <br /> method: N/A N/A Factor : N/A Volume N/A BCY <br /> Area -- -- <br /> method: 2.04 Acres Rip Depth: 1.50 Volume 4,937 BCY or CCY <br /> Source of quantity take-off: Division Estimate <br /> Source of mat. load factor: N/A - - - <br /> HOURLY PRODUCTION <br /> Seismic Method-- Seismic velocity of material: N/A feet/sec. <br /> - Unadjusted hourly production: N/A BCY or CCY/hr <br /> Area Method - Avg. ripping depth per pass: 1.50 feet <br /> - Avg. ripping width per pass: 6.25 feet <br /> - Avg. ripping length per pass: 50.00 feet <br /> - Avg. velocity of machine 88.00 feet/min. <br /> - Avg. machine maneuver time : 0.25 minutes <br /> - Hourly prod. per unit area : 0.526 acres/hr <br /> - Unadjusted hourly production: 1,273.15 BCY or CCY/hr <br /> Correction Factors - Unadjusted production = 1,273.15,BCY or CCY/hr <br /> - Site altitude = 10,000 feet <br /> - Altitude adjustment = 0.95 (Cat tbl) <br /> - Job efficiency factor = 0.83 (1sh/day) <br /> - Net correction = 0.79 multiplier <br /> - Adjusted production = 1003.88 BCY or CCY/hr <br /> - Fleet production = 1003.88 BCY or CCY/hr' <br /> JOB COST <br /> Fleet Size : 1 Dozer(s) Total Job Time: 4.92 Hours <br /> Unit Cost : $0.121 /LCY Total Job Cost: 5598.11 <br />