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1 <br /> Colorado Division of Minerals and Geology <br /> ESTIMATING FORM - BULLDOZER RIPPING <br /> ----------------------------------- <br /> ----------------------------------- <br /> Task #: 220 Prep. by: SLB Task File Name: C017-220 <br /> Date: 03/15/95 Permit #: C-81-017 Mine: Coal Basin Mines <br /> Permit Action: N/A <br /> Task Description: Rip Rock Tunnel pile access road <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 #2: 3-shank ripper ---------- <br /> Cost/Hr Breakdown: Utilization % (code MO) <br /> __�_.._.. ownership = $51.87 N/A <br /> operating/overhaul - dozer = $43.64 100 <br /> -ripper = $4.54 100 <br /> operator = S21.58 N/A <br /> Total egpt. unit cost/hr = S121.62 Total fleet cost/hr: $121.62 <br /> _________ ______-__ <br /> MATERIAL QUANTITIES <br /> Selected method Area <br /> Seismic Load Bank ------------- <br /> method: N/A N/A Factor : N/A Volume N/A BCY <br /> Area ------- ---_ <br /> method: 0.83 Acres Rip Depth: 2.00 Volume 2,678 BCY or CCY <br /> Source of quantity take-off: Air photos <br /> ___----------------------------------------------- <br /> Source of mat. load factor: N/A <br /> ----------__------_---------------------__M_--__-__ <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: 2.50 feet <br /> ----------- - Avg. ripping width per pass: 6.25 feet <br /> - Avg. ripping length per pass: 100.00 feet <br /> - Avg. velocity of machine 88.00 feet/min. <br /> - Avg. machine maneuver time : 0.25 minutes <br /> - Hourly prod. per unit area : 0.621 acres/hr <br /> - Unadjusted hourly production: 2,504.55 BCY or CCY/hr <br /> Correction Factors - Unadjusted production = 2,504.55 BCY or CCY/hr <br /> --------------- - Site altitude = 8,700 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 = 1974.84 BCY or CCY/hr <br /> - Fleet production = 1974.84 BCY or CCY/hr <br /> JOB COST <br /> Fleet Size : 1 Dozer(s) Total Job Time: 1.36 <br /> ------- __--__----- <br /> Unit Cost : S0.062 /LCY Total Job Cost: $164. <br /> -------- -------- <br /> 1 <br />