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According to the CAT Manual, the CAT 785D truck is a front-drive truck that has an empty weight of 256,849 lbs, heaped volume of 102 CY, and a target payload of 157 tons. The weight is shown below. The CAT 785D’s maneuver (in loading and dumping areas) and dumping time is 1.8 minutes. Travel time charts and performance curve should be used. (refer to nunally 8edition)
a.)What is the maximum grade the CAT 785D truck can ascend empty on dry loose sand?
b.) How many trips will a CAT 785D make to transport 25,000 LCY of broken gypsum?
Determine the specifications (unstretched length and springconstant k) for the elastic cord to be used at a bungee-jumping facility. Participants are to jump from a platform 150 ft above the ground.
A student in the laboratory plans to exert a vacuum in the head space above a surface of water in a closed tank. She plans for the the absolute pressure in the tank to be 10,400 Pa. The temperature in the lab is 20°C.
A 200 pound man stands at the end of a 16 foot diving board (point C) with a pin at (A) and a roller located 6.695 ft away from A at point (B). The hollow diving board is made of aluminum
A city near the epicenter of an earthquake sustains major damage to poorly constructed building, althought hospital and schools designed to resist dmage from ground motion sustsain only minor damage.
Determine the major and minor principal stresses at failure and the effective stress friction angle (assume c' = 0). Plot the Mohr diagram.
mg/L of salt. The new owners propose to flush the pond into their discharge pipe leading to the Atlantic Ocean, which has a salt concentration above 30,000 mg/L.
The students strikes the sign at a speed of 35mi/h. If the student was travelling at 55mi/h when the sign was first spotted, what was the student's associated reaction time( use practical stopping distance)
Reservoir A (water surface elevation = 1300 ft) is connected to reservoir B (water surface elevation=250 ft) by 6,000 ft of 14 inch diameter cast iron pipe (e = 0.005 ft. Neglecting all minor losses
design a bar screen for a peak average flow of 0.46m3/s.you can consider reasonable assumptions.
The two shafts in a speed-reducer unit are subjected to couples of magnitude M1 = 18 N · m and M2 = 7.5 N · m, respectively. Replace the two couples with a single equivalent couple, specifying its magnitude and the direction of its axis.
Determine the force required to lift the block of stone that weighs 200 lb. The rollers are frictionless and the static coefficient between all other surfaces is 0.3. Neglect the size and weight of the wedges.
Suppose the average concentration of SO2 (SOsub2) is measured to be 400microgram/cu.m at 25degree celcius and 1 atm. Does this exceed the (24-hr) air quality standard of 0.14 ppm
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