CM 2113 Exam 3 Chao Wang Study Guide
1. Dozer is good for applications of less than 300ft short True
haul, and scraper is good for applications of up to
3,000ft medium haul.
2. An advantage of a crawler dozer as compared with a False
wheel-type dozer is higher speed.
3. Which of the following work tasks can be performed by Spreading, Striping and
a dozer? Backfilling
4. The is very effective for side-casting Angle Blade
material, particularly for backfilling or making sidehill
cuts.
5. is a technique whereby the blade end Slot dozing
spillage from the first pass or the sidewalls from pre-
vious cuts are used to hold the material in front of the
dozer blade on subsequent passes.
6. Which of the following factors need to be considered Scraper configuration, vol-
when selecting a proper scraper for your project? ume of material and job
size
7. Articulated trucks consist of two individual frames True
joined by pin, and can be easily operated over soft
ground.
8. A contractor wants to investigate the production and .75
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
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, CM 2113 Exam 3 Chao Wang Study Guide
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?
9. A contractor wants to investigate the production and .88
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 material-weight correction
factor? Assume the percent swell is 12%.
10. A contractor wants to investigate the production and .80
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 visibility correction factor?
11. A contractor wants to investigate the production and .83
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
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1. Dozer is good for applications of less than 300ft short True
haul, and scraper is good for applications of up to
3,000ft medium haul.
2. An advantage of a crawler dozer as compared with a False
wheel-type dozer is higher speed.
3. Which of the following work tasks can be performed by Spreading, Striping and
a dozer? Backfilling
4. The is very effective for side-casting Angle Blade
material, particularly for backfilling or making sidehill
cuts.
5. is a technique whereby the blade end Slot dozing
spillage from the first pass or the sidewalls from pre-
vious cuts are used to hold the material in front of the
dozer blade on subsequent passes.
6. Which of the following factors need to be considered Scraper configuration, vol-
when selecting a proper scraper for your project? ume of material and job
size
7. Articulated trucks consist of two individual frames True
joined by pin, and can be easily operated over soft
ground.
8. A contractor wants to investigate the production and .75
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
1/7
, CM 2113 Exam 3 Chao Wang Study Guide
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?
9. A contractor wants to investigate the production and .88
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 material-weight correction
factor? Assume the percent swell is 12%.
10. A contractor wants to investigate the production and .80
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 visibility correction factor?
11. A contractor wants to investigate the production and .83
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
2/7
