CM 2113 FINAL exam with answers
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Dozer is good for applications of less than 300ft short
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haul, and scraper is good for applications of up to 3,000ft
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medium haul. - CORRECT ANSWERS ✔✔True |\ |\ |\ |\ |\
An advantage of a crawler dozer as compared with a
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wheel-type dozer is higher speed. - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\
✔✔False
Which of the following work tasks can be performed by a
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dozer? - CORRECT ANSWERS ✔✔a. Spreading
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b. Striping
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c. Backfilling
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***All of the above*** |\ |\ |\
The ________________ is very effective for side-casting
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material, particularly for backfilling or making sidehill
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cuts. - CORRECT ANSWERS ✔✔Angle blade
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______________ is a technique whereby the blade end |\ |\ |\ |\ |\ |\ |\ |\
spillage from the first pass or the sidewalls from previous
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cuts are used to hold the material in front of the dozer
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, blade on subsequent passes. - CORRECT ANSWERS
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✔✔Slot dozing |\
Which of the following factors need to be considered
|\ |\ |\ |\ |\ |\ |\ |\ |\
when selecting a proper scraper for your project? -
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CORRECT ANSWERS ✔✔a. Scraper configuration |\ |\ |\ |\
b. Volume of material
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c. Job size
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***All of the above***|\ |\ |\
Articulated trucks consist of two individual frames joined |\ |\ |\ |\ |\ |\ |\ |\
by pin, and can be easily operated over soft ground. -
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CORRECT ANSWERS ✔✔True |\ |\
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
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distance of 150 ft from the beginning of the cut. The
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dozing is uphill on a 20% grade. The operator will have
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average skill. The site conditions will be dark for visibility.
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The material weighs 108 pcf in the bank state. Job
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
efficiency is assumed to be equivalent to a 50-min hour.
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What is the operator correction factor? - CORRECT
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ANSWERS ✔✔0.75 |\
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Dozer is good for applications of less than 300ft short
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
haul, and scraper is good for applications of up to 3,000ft
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
medium haul. - CORRECT ANSWERS ✔✔True |\ |\ |\ |\ |\
An advantage of a crawler dozer as compared with a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wheel-type dozer is higher speed. - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\
✔✔False
Which of the following work tasks can be performed by a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
dozer? - CORRECT ANSWERS ✔✔a. Spreading
|\ |\ |\ |\ |\
b. Striping
|\
c. Backfilling
|\
***All of the above*** |\ |\ |\
The ________________ is very effective for side-casting
|\ |\ |\ |\ |\ |\ |\
material, particularly for backfilling or making sidehill
|\ |\ |\ |\ |\ |\ |\
cuts. - CORRECT ANSWERS ✔✔Angle blade
|\ |\ |\ |\ |\
______________ is a technique whereby the blade end |\ |\ |\ |\ |\ |\ |\ |\
spillage from the first pass or the sidewalls from previous
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cuts are used to hold the material in front of the dozer
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, blade on subsequent passes. - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔Slot dozing |\
Which of the following factors need to be considered
|\ |\ |\ |\ |\ |\ |\ |\ |\
when selecting a proper scraper for your project? -
|\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔a. Scraper configuration |\ |\ |\ |\
b. Volume of material
|\ |\ |\
c. Job size
|\ |\
***All of the above***|\ |\ |\
Articulated trucks consist of two individual frames joined |\ |\ |\ |\ |\ |\ |\ |\
by pin, and can be easily operated over soft ground. -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔True |\ |\
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 20% grade. The operator will have
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
average skill. The site conditions will be dark for visibility.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The material weighs 108 pcf in the bank state. Job
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
efficiency is assumed to be equivalent to a 50-min hour.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What is the operator correction factor? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔0.75 |\
