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2009-08-06_REVISION - C1982056 (2)
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2009-08-06_REVISION - C1982056 (2)
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Last modified
8/24/2016 3:49:30 PM
Creation date
8/6/2009 2:33:25 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
REVISION
Doc Date
8/6/2009
Doc Name
Expansion Adequacy Concerns & Attached Cost Estimate
From
DRMS
To
Twentymile Coal Company
Type & Sequence
TR67
Email Name
JHB
Media Type
D
Archive
No
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HOURLY PRODUCTION sheet 2 of 2 <br />Hauling Capacity : <br />Scraper Payload (weight) Basis Scraper Bowl (volume) Basis : <br />Material weight : 3,250 pounds/LCY Struck volume : 32.00 LCY <br />Material description : Heaped volume : 44.00 LCY <br />Gravel - Pitrun Average volume : 38.00 LCY <br />Rated payload : 104,000 pounds Adjusted capacity : 32.00 LCY *** <br />Payload capacity: 32.00 LCY hourly production reflects volume per scraper pair on push-pull models <br />Cycle Time : Job Condition Corrections : Site altitude (ft.) : 6,950 <br /> Scraper Push dozer Source <br />Scraper loading time 1.10 minutes Altitude adj.: 1.000 NA (Cat HB) <br />Maneuver and spread time : 0.60 minutes Job efficiency : 0.830 NA (Cat HB) <br />* load time per scraper pair on push-pull models Net correction : 0.830 NA <br />Travel time : <br />Road condition description : Rutted dirt, little maintenance, no water, 2" tire penetration <br />Haul Route : <br />Seg. # Haul distance (feet) Grade (%) Roll. res. (%) Total res. (%) Velocity (fpm) Travel time (min.)** <br />1 900 -4.70 5.00 a30 3067 0.49 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Haul time : <br />Return route 0.49 minutes <br />1 900 4.70 5.00 9.70 1913 0.58 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />travel time for each segment is adjusted for acceleration/deceleration. Return time : <br />table velocities are max. attainable per total resistance shown, not average <br />Total scraper team cycle time (load + haul + maneuver and spread + return) : <br />Unadjusted unit production/hour : 1,382.86 LCY/hour *** Adjusted for job conditions : <br />Optimal number of scrapers per push dozer : NA Selected number of scrapers : <br />Adjusted single scraper team (unit) hourly production : <br />Adjusted multiple scraper team (fleet) hourly production : <br />JOB TIME AND COST <br />Fleet size : 1 Team(s) Total job time : <br />Unit cost : $0.915 /LCY Total job cost : 0.58 <br /> <br />2.78 <br />1,147.77 <br />2 <br />1,147.77 <br />1,147.77 <br /> <br />4.72 <br />$4,956 minutes <br /> <br />minutes <br />LCY/hour <br />scraper(s) <br />LCY/hour <br />LCY/hour <br /> <br />Hours
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