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A scraper [low pressure rubber tires] is working on a road that is earth (compacted &...

A scraper [low pressure rubber tires] is working on a road that is earth (compacted & maintained) as a haul road.

The grade of the road is 2.5 % (cut to fill).

Weight of vehicle is 98000 lb.

Weight of soil to be hauled is 70000 lb.

Calculate the total resistance that the scraper must overcome.

engineering   Civil-Engineering   
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Answer #1

liven data: weight of vehicle, w,= 98000 lb weight of soil to be hauled= 70000 lb brade of road, h=2.5% (cut to fill) Now gro.: RR = (so to 70) lb/ton .: RR= 60 x 84 lb RR = 5040lb Now grade resistance, l1 R=20 lb / x % grade eR=20x84x2.5 1 =4200 lb

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