You are a contractor and and you would like to utilize Caterpillar 637G scrapers for an...

    

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You are a contractor and and you would like to utilize Caterpillar 637G scrapers for an upcoming project. The project's haul route is 2,000 If each direction, the elevation of the cut is 1,425 ft and the fill is 1,575 ft. The scrapers will work in tandem and load in the push-pull arrangement. You are expecting 3" of tire penetration on the haul routes and will utilize the total operated empty and loaded weights that Caterpillar lists for that machine in their product brochure. Using the specifications from the brochure for this equipment (located in the Hwk 6 folder in Canvas), find the following: 1. What is the heaped volumetric capacity (SAE rated)? (2.5 pts) 2. What is the gravimetric capacity? (2.5 pts) 3. What is the operating weight - loaded? (2.5 pts) 4. What is the operating weight - empty? (2.5 pts) In answering the following questions, be sure to show your work for credit 5. What is the rolling resistance, expressed in lbs/tn and as a percentage of grade for this machine based upon the stated hauling conditions? (10 pts) 6. What is the grade resistance, expressed in lbs/tn and as a percentage of grade, when the machine is hauling material from the cut to the fill? (10 pts) 7. What is the grade assistance, expressed in lbs/tn and as a percentage of grade, when the machine is returning empty from the fill area to the cut? (10 pts) 8. What is the total resistance, expressed in lbs/tn and as a percentage of grade, when the machine is hauling material from the cut to the fill? (10 pts) 9. What is the total resistance, expressed in lbs/tn and as a percentage of grade, when the machine is returning empty from the fill area to the cut? (10 pts) 10. What is the total rimpull required of this machine when hauling material from the cut to the fill? (10 pts) 11. What is the total rimpull required of this machine when returning empty from the fill area to the cut? (10 pts) 12. What speed in MPH can the machine be expected to operate at while hauling material from the cut to the fill? (10 pts) 13. The material being excavated is located in the river bottom consisting of wet sand and gravel. Will the machine have trouble getting traction to haul out of the cut? (10 pts) You are a contractor and and you would like to utilize Caterpillar 637G scrapers for an upcoming project. The project's haul route is 2,000 If each direction, the elevation of the cut is 1,425 ft and the fill is 1,575 ft. The scrapers will work in tandem and load in the push-pull arrangement. You are expecting 3" of tire penetration on the haul routes and will utilize the total operated empty and loaded weights that Caterpillar lists for that machine in their product brochure. Using the specifications from the brochure for this equipment (located in the Hwk 6 folder in Canvas), find the following: 1. What is the heaped volumetric capacity (SAE rated)? (2.5 pts) 2. What is the gravimetric capacity? (2.5 pts) 3. What is the operating weight - loaded? (2.5 pts) 4. What is the operating weight - empty? (2.5 pts) In answering the following questions, be sure to show your work for credit 5. What is the rolling resistance, expressed in lbs/tn and as a percentage of grade for this machine based upon the stated hauling conditions? (10 pts) 6. What is the grade resistance, expressed in lbs/tn and as a percentage of grade, when the machine is hauling material from the cut to the fill? (10 pts) 7. What is the grade assistance, expressed in lbs/tn and as a percentage of grade, when the machine is returning empty from the fill area to the cut? (10 pts) 8. What is the total resistance, expressed in lbs/tn and as a percentage of grade, when the machine is hauling material from the cut to the fill? (10 pts) 9. What is the total resistance, expressed in lbs/tn and as a percentage of grade, when the machine is returning empty from the fill area to the cut? (10 pts) 10. What is the total rimpull required of this machine when hauling material from the cut to the fill? (10 pts) 11. What is the total rimpull required of this machine when returning empty from the fill area to the cut? (10 pts) 12. What speed in MPH can the machine be expected to operate at while hauling material from the cut to the fill? (10 pts) 13. The material being excavated is located in the river bottom consisting of wet sand and gravel. Will the machine have trouble getting traction to haul out of the cut? (10 pts)