Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 8-3
Horace K. Church. AND FACILITIES The hourly cost of ownership and operation of rock excavation machinery varies greatly for a ... Ownership and Operation of Machinery and Facilities Elements of Hourly Ownership and Operating Cost Tabulation.
Horace K. Church. AND FACILITIES The hourly cost of ownership and operation of rock excavation machinery varies greatly for a ... Ownership and Operation of Machinery and Facilities Elements of Hourly Ownership and Operating Cost Tabulation.
Halaman 8-4
Horace K. Church. TABLE 8-1 Estimated Hourly Cost of Ownership and Operation of Heavyweight Tractor - Ripper- Bulldozer of 410 - hp Engine and 110,000 - lb Weight ( 1978 ) Cost ... Ownership and Operation 8-4 Cost of Machinery and Facilities.
Horace K. Church. TABLE 8-1 Estimated Hourly Cost of Ownership and Operation of Heavyweight Tractor - Ripper- Bulldozer of 410 - hp Engine and 110,000 - lb Weight ( 1978 ) Cost ... Ownership and Operation 8-4 Cost of Machinery and Facilities.
Halaman 11-19
... ownership and operation Operator Total hourly costs , 15.60 $ 107.70 15.60 $ 110.60 15.60 $ 116.30 15.60 $ 127.80 used for figuring direct job unit cost of Figure 11-17 Although most rock ripping is done by heavyweight machines , a ...
... ownership and operation Operator Total hourly costs , 15.60 $ 107.70 15.60 $ 110.60 15.60 $ 116.30 15.60 $ 127.80 used for figuring direct job unit cost of Figure 11-17 Although most rock ripping is done by heavyweight machines , a ...
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ROCK WEATHERING | 3-4 |
LANDFORMS AND GEOMORPHOLOGY | 4-4 |
OPENCUT EXCAVATIONS | 5-3 |
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alluvium average axles backhoe blasthole borrow pit brake horsepower bucket bucket loader bulldozer calculated California capacity clearing and grubbing cofferdam compaction compactor compressor conveyor cost of ownership crawler-tractor cubic yard cybm cybm/h cysm depth diameter diesel engine dipper Direct job unit dragline dredge dumping efficiency electric embankment equation estimated explosives factor fill freeway friction ft/min ft/s gal/min grade granite haul road haulage head loss heavyweight hoist hole horsepower hourly production igneous igneous rock illustrates job unit cost lb/in² length limestone loading machine machinery material maximum medium metamorphic rocks mi/h off-the-road open-pit mining ownership and operation percent pipe pump quarry r/min rock excavation rock formation rock haulers rock-earth rolling resistance scraper sedimentary rock shovel shown in Figure slope soft specifications Table tare weight tire tons tow-type tractor tractor-bulldozer tractor-rippers truck valve velocity water wagon weight wellpoint wheels-tires width Work-cost indicator yd³