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_GENERAL DOCUMENTS - C1981017 (239)
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_GENERAL DOCUMENTS - C1981017 (239)
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Last modified
11/2/2020 10:24:14 AM
Creation date
6/20/2012 11:20:15 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
GENERAL DOCUMENTS
Doc Name
Bid Documents (IMP) 1982 Technical Revisions Rock Tunnel Trash Pile
Permit Index Doc Type
General Correspondence
Media Type
D
Archive
No
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DRMS Re-OCR
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Signifies Re-OCR Process Performed
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1 - D9U dozer: 2,896 hours @ $127.00/hr. = $367,792.00 <br /> I - Operator: 2,896 hours @ $ 15.00/hr. = $ 43,440.00 <br /> TOTAL COST $411,232.00 <br /> The upper bin has a pad area of approximately 0.20 acres which 'must be backfilled <br /> to an average depth of 8.5 feet. Therefore, 2,743 yd3 must be inoved. The <br /> average push distance would be 125 feet. The unadjusted production rate for a <br /> D9U would be 1,200 LCY/hr. <br /> The factors affecting production are: <br /> Condition Factor <br /> Average Operator 0.75 <br /> Rock Material 0.70 <br /> 50 min. work hour 0.84 <br /> Grade factor 38% 0.26 <br /> Altitude deration 0.94 <br /> Overall Factor 0.11 <br /> Under these conditions, a D9U has a production rate of 132 LCY/hr. , and 'would require <br /> 21 hours. to complete the backfilling operation at the following cost.- <br /> 1 - D9U dozer: _ 21 hours @ $127.00/hr. = $2,667.00* <br /> 1 - Operator: 21 hours @ $ 15.00/hr. = $ 315.00 <br /> TOTAL COST: $2,982.00 <br /> The lower coal bin has a pad area of approximately 0.8 acres which must be backfilled <br /> to an average depth of 19 feet. A D9U would have an average push distance of <br /> 150 feet .to move a total of 24,522 yd3 of material. The unadjusted production rate <br /> for a 150-foot push distance is 1,000 LCY/hr. The production factors would be <br /> the same as the upper bin pad. Therefore, the production rate would be 110 LCY/hr. <br /> At this production rate, it would take a D9U 223 hours to complete this operation <br /> at .the following cost: <br /> 1 - D9U dozer: 223 hours @ $127.00/hr. = $28,321.00 <br /> 1 - Operator: * 223 hours @ $ 15.00/hr. = $ 3,345.00 <br /> TOTAL COST: $31,666.00 <br />
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