• • A contractor is planning to use single pusher scrapers to move 90,000 cubic yards of soil, and the expected production of a single pusher scraper assuming adequate pusher support is 230cy/hr. It has been decided there will be a total of 8 scrapers operating on the site with a back-track loading method. The estimated cycle time for each scraper is 7.5 min.
    What is the expected production rate of this scraper fleet if only one pusher is available?

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