Question

2 3 Question: How many hours will it take to make two complete trips (i.e., a round trip) over the entire fill area with the disc? Facts: A contractor has a project site with very wet soils. . He has borrowed a Rome model TAW-32 disc from a friend. . The disk width is 15.5 feet . The project is a highway job and the fill area with the wet soils is 2,000 feet long The width of the fill, at this stage of construction, is 120 feet. . He plans to pull the disc with a CAT D7G Series 2 tractor. The tractor average speed is 3 mph. . .He estimates that the entire fill area will have to be disked two times (i.e., a round trip) to get the soil moisture correct. He will disregard any overlap of the disc and any lost time for turning the machine around at the end of each pass. .

Answer 1

- 120fect per 2coo ft. given that, Disk width = 15.5 ft. project long = 2,000 ft width of the fill - 120 ft tractor ang speed = 3 mph ~ 9.84 ft / hours 120 = 7.74 15.5 lapth Time to 2000 = of Speed of recto = 203-25hr 9.84 Time for one round - 203.25x8 16.26 hrs Total time = 1626x2 = 3252hr = 35.5 days