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Home / Questions / A wheel tractor-scraper whose weight on the driving wheels is 38,720 lb (17,563 kg) has a...

A wheel tractor-scraper whose weight on the driving wheels is 38,720 lb (17,563 kg) has a...

1. A wheel tractor-scraper whose weight on the driving wheels is 38,720 lb (17,563 kg) has a gross weight of 70,400 lb (31,933 kg). If the road surface is dry earth with a rolling resistance factor of 100 lb/ton (50 kg/t), what is the maximum grade the scraper could ascend?

 

2. What is a pull-scraper? What advantages does it have over conventional scrapers?

3. Write a computer program to calculate the number of pushers required to service a specified scraper fleet. Input should include scraper cycle time, method of push-loading, and whether single or tandem pushers will be used.

Jul 22 2020 View more View Less

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