CM 2113 CHAO WANG EXAM
QUESTIONS WITH CORRECT
SOLUTIONS||100% GUARANTEED
PASS||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
Which soil volume is used to determine the volume capacity of excavating/hauling
equipment? - ANSWER ✓ Loose Volume
Soil density is a measure of ? per unit of volume. - ANSWER ✓ Weight
What is soil's bank condition? - ANSWER ✓ Typical amount of soil in its natural
state
(T/F) 1 bank cubic yard is 1 cubic yard of material after it has been disturbed by a
loading process - ANSWER ✓ F
What are construction costs based on? - ANSWER ✓ (total quantity of the work
to be done)*(the unit price of the work)
Rolling Resistance - ANSWER ✓ resistance of a level surface to constant-
velocity motion across it
What does rolling resistance result from? - ANSWER ✓ friction of the driving
mechanism, tire flexing and the force needed to push through or ride over the
supporting surface
(T/F) rolling resistance applied to both crawler-type and wheel-type mobile
equipment - ANSWER ✓ T
(T/F) When a vehicle moves down a grade the force of gravity that assists the
vehicle is also called grade assistance - ANSWER ✓ T
, (T/F)power required, total resistance and effective grade all denote the same thing
- ANSWER ✓ T
(T/F) The decision process for matching the best possible machine to the project
task requires the engineer to take into account both the properties of the material to
be handled and the mechanical capabilities of the machine - ANSWER ✓ T
(T/F) The power to move a crawler type of tractor and load is called Rimpull -
ANSWER ✓ F
Rimpull - ANSWER ✓ the tractive force between the tires of a machine's driving
wheels and the surface on which they travel
Total resistance - ANSWER ✓ grading resistance +rolling resistance
Articulated trucks consist of two individual frames joined by pin, and can be easily
operated over soft ground. - ANSWER ✓ 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?
- ANSWER ✓ .75
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 material-weight correction
factor? Assume the percent swell is 12%. - ANSWER ✓ .88
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 visibility correction factor?
- ANSWER ✓ .80
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 work efficiency correction
factor? - ANSWER ✓ .83
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 grade correction factor?
Please choose a range from the following where your reading will be within. -
ANSWER ✓ .4 - .6
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 total 8 scrapers
operating on the site with a back-track loading method. The estimated cycle time
for each scraper is 7.5 min.
How many pushers are required to serve the fleet of 8 scrapers? - ANSWER ✓ 2
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 total 8 scrapers
operating on the site with a back-track loading method. The estimated cycle time
for each scraper is 7.5 min.
Following the previous question, what is the expected production rate of this
scraper fleet if only one pusher is available? - ANSWER ✓ 1,150 cy/hr
A contractor has a project involving the construction of a small manufacturing
plant. The contractor has selected a borrow site and has decided to use 27-cubic
yard dump trucks to haul the needed fill material. The contractor has decided to use
a hydraulic excavator with a shovel attachment to load the trucks. The excavator
QUESTIONS WITH CORRECT
SOLUTIONS||100% GUARANTEED
PASS||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
Which soil volume is used to determine the volume capacity of excavating/hauling
equipment? - ANSWER ✓ Loose Volume
Soil density is a measure of ? per unit of volume. - ANSWER ✓ Weight
What is soil's bank condition? - ANSWER ✓ Typical amount of soil in its natural
state
(T/F) 1 bank cubic yard is 1 cubic yard of material after it has been disturbed by a
loading process - ANSWER ✓ F
What are construction costs based on? - ANSWER ✓ (total quantity of the work
to be done)*(the unit price of the work)
Rolling Resistance - ANSWER ✓ resistance of a level surface to constant-
velocity motion across it
What does rolling resistance result from? - ANSWER ✓ friction of the driving
mechanism, tire flexing and the force needed to push through or ride over the
supporting surface
(T/F) rolling resistance applied to both crawler-type and wheel-type mobile
equipment - ANSWER ✓ T
(T/F) When a vehicle moves down a grade the force of gravity that assists the
vehicle is also called grade assistance - ANSWER ✓ T
, (T/F)power required, total resistance and effective grade all denote the same thing
- ANSWER ✓ T
(T/F) The decision process for matching the best possible machine to the project
task requires the engineer to take into account both the properties of the material to
be handled and the mechanical capabilities of the machine - ANSWER ✓ T
(T/F) The power to move a crawler type of tractor and load is called Rimpull -
ANSWER ✓ F
Rimpull - ANSWER ✓ the tractive force between the tires of a machine's driving
wheels and the surface on which they travel
Total resistance - ANSWER ✓ grading resistance +rolling resistance
Articulated trucks consist of two individual frames joined by pin, and can be easily
operated over soft ground. - ANSWER ✓ 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?
- ANSWER ✓ .75
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 material-weight correction
factor? Assume the percent swell is 12%. - ANSWER ✓ .88
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 visibility correction factor?
- ANSWER ✓ .80
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 work efficiency correction
factor? - ANSWER ✓ .83
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 grade correction factor?
Please choose a range from the following where your reading will be within. -
ANSWER ✓ .4 - .6
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 total 8 scrapers
operating on the site with a back-track loading method. The estimated cycle time
for each scraper is 7.5 min.
How many pushers are required to serve the fleet of 8 scrapers? - ANSWER ✓ 2
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 total 8 scrapers
operating on the site with a back-track loading method. The estimated cycle time
for each scraper is 7.5 min.
Following the previous question, what is the expected production rate of this
scraper fleet if only one pusher is available? - ANSWER ✓ 1,150 cy/hr
A contractor has a project involving the construction of a small manufacturing
plant. The contractor has selected a borrow site and has decided to use 27-cubic
yard dump trucks to haul the needed fill material. The contractor has decided to use
a hydraulic excavator with a shovel attachment to load the trucks. The excavator
