Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 10-9
... flow . As the head loss due to friction is 0.84 ft , the total head necessary for flow is 1.00 ft per 100 - ft length of pipe . One notes that solution of the formula Q = Av for velocity gives a value of 3.19 ft / s , whereas Table 10-1 ...
... flow . As the head loss due to friction is 0.84 ft , the total head necessary for flow is 1.00 ft per 100 - ft length of pipe . One notes that solution of the formula Q = Av for velocity gives a value of 3.19 ft / s , whereas Table 10-1 ...
Halaman 10-19
... flow and size of meter . TABLE 10-3 Friction Losses for Water Flow in 100 - ft Length of Rubber or Rubber - Substitute Hose in Average Condition in Feet of Head Inside diameter of hose , in Flow , gal / min 2 21/2 3 4 20 1.6 0.7 40 5.6 ...
... flow and size of meter . TABLE 10-3 Friction Losses for Water Flow in 100 - ft Length of Rubber or Rubber - Substitute Hose in Average Condition in Feet of Head Inside diameter of hose , in Flow , gal / min 2 21/2 3 4 20 1.6 0.7 40 5.6 ...
Halaman 10-27
... flow or parts of the flow in a large integrated system may move upgrade , essentially level , or downgrade . Despite the complexities , the problems may be solved by application of the general equation involving equality of total head ...
... flow or parts of the flow in a large integrated system may move upgrade , essentially level , or downgrade . Despite the complexities , the problems may be solved by application of the general equation involving equality of total head ...
Isi
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