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Colorado Division of Minerals and Geology <br /> ESTIMATING FORM - BULLDOZER RIPPING <br /> ----------------------------------- <br /> ----------------------------------- <br /> Task #: 173 Prep. by: SLB Task File Name: C017-173 <br /> ---------- ---»»»»» ------------- <br /> Date: 1 /94 Permit #: C-81-017 Mine: Coal Basin Mines <br /> y�S�{Permit-Action: N/A -....--------------�._....--- <br /> Task Description: Rip Mine 4 bench area <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D8L Horsepower: 335 <br /> Blade Type: Semi-Uni versa l -....----_-- <br /> Attachment #1: ROPS Cab Shift Basis: 1/day <br /> Attachment #2: 3-shank ripper -»»»»»___- <br /> Cost/Hr Breakdown: Utilization % (code 6W) <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 /> --------- --------- <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: 2.58 Acres Rip Depth: 3.00 Volume 12,487 BCY or CCY <br /> ----------- ------- ----------- <br /> Source of quantity take-off: II-8-App.7-Att.2 and 4-Mine X-Section <br /> _---»-»--»---»__»__---»-»_---__w------------------- <br /> Source of mat. load factor: N/A <br /> -----------------------»-_------_»__--»------------- <br /> HOURLY PRODUCTION <br /> ----------------- <br /> ----------------- <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: 2.69 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: 2,694.90 BCY or CCY/hr <br /> Correction Factors - Unadjusted production = 2,694.90 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 = 2124.93 BCY or CCY/hr <br /> - Fleet production = 2124.93 BCY or CCY/hr <br /> JOB COST <br /> Fleet Size : 1 Dozer(s) Total Job Time: 5.88 Hours <br /> --»---»- __---»»-__- <br /> Unit Cost . $0.057 /LCY Total Job Cost: $714.72 <br />