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A contractor plans to excavate 3,900 bank cubic yards from a site. He needs to have 1,250 compacted cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 1,800 pounds per cubic yard, a loose density of 1,500 pounds per cubic yard, and a compacted density of 2,400 pounds per cubic yard. He plans to use a truck that can haul 20 loose cubic yard per load. How many full truckloads of loose excess material should be hauled off the site?

A contractor wants to investigate the production and cost differences of using a 4S blade on a crawler-type dozer (D4H-4S). The material is dry clay and is to be moved a distance of 150 ft from the beginning of the cut. The dozing is uphill on a 10% grade. The operator will have average skill. The site conditions will be dark for visibility. The material weighs 90 pcf in the bank state. Job efficiency is assumed to be equivalent to a 45-min hour. Find the ideal production rate for D4H-4S. Please choose a range from the following choices where your reading will be within.

A contractor wants to investigate the production and cost differences of using a 4S blade on a crawler-type dozer (D4H-4S). The material is dry clay and is to be moved a distance of 150 ft from the beginning of the cut. The dozing is uphill on a 10% grade. The operator will have average skill. The site conditions will be dark for visibility. The material weighs 90 pcf in the bank state. Job efficiency is assumed to be equivalent to a 45-min hour. What is the material-weight correction factor? Assume the percent swell is 12%.

Answer below questions:   a) What is the support force? (3 points)       b) What is the acceleration of an object that moves at constant velocity? What is the net force on the object in this case? (6 points)  

Pollen grains are formed in _____ and ova are formed in _____.

Which of these typically occur in both angiosperms and gymnosperms?

Using the following pulmonary volume measurements, write out the equation for Inspiratory Capacity Tidal volume= 625 Inspiratory reserve volume= 2500 Expiratory reserve volume= 1550 Residual volume= 1300

A policy domain is:

Best argues social problem workers tend to employ a microsociological approach to social problems. Which of the following accurately describes a microsociological approach?

Which of the following best describes ‘malestream’ expression?