CM 2112 MID-TERM BANGARU QUESTIONS WITH
VERIFIED ANSWERS
Protective cover for steel or timber pile. This usually is concrete , added at the water or
ground line, where all types of piles are most vulnerable to corrosion and insect attack. -
Answers - Pile Encasement
Pile driven until friction between pile surface and soil are great enough to support loads
placed on them. Used when firm bearing it too deep to provide support for an end
bearing pile. - Answers - Friction Pile
A type of pile splice used at the joints of pipe pile to splice two sections together. -
Answers - Drive Sleeve
An H or wide-flange (WF) member driven at intervals of a few feet into which horizontal
lagging is placed to support the walls of an excavation. - Answers - Soldier Pile
A pile made up of two or more types or sizes of piles joined together. The connection
between the components is designed to transmit load and to precent separation during
and after construction. - Answers - Composite Piles
A temporary wood or steel sheet piling braced single-walled, rectangular shaped
enclosure installed to permit construction of a foundation below ground or water level. -
Answers - Rectangular Cofferdam
Precast concrete piles can be removed form the forms as soon as the concrete has a
compressive strength of 3,500 psi. - Answers - True
Steel pipe piles are most efficient as friction piles as they have substantial surface area
that interacts with the surrounding soil to provide significant frictional load resistance. -
Answers - True
Steel piles have a high load-carrying capacity for a given weight of pile than concrete
piles. - Answers - True
Square and octagonal concrete piles are cast in vertical forms. - Answers - False
When the depth of support is large or when the loads are great, it is necessary to
incorporate a tieback or bracing system with the sheet piles. - Answers - True
What type of leads system has a pivot at the crane's boom top and a brace at the
bottom that attaches to the crane? - Answers - Fixed Leads
, Which type of pile must be handled with care to prevent breakage or damage due to
flexural stresses? - Answers - Precast-Prestressed Concrete piles
Which type of pile hammer performs especially well in cohesive or very dense sole
layers? - Answers - Disel Hammers
Which type of pile is suggested for marine applications? - Answers - Concrete-Steel
Composite Piles
Which type of pile is a rolled section that is interlocked with adjacent sections to form a
continuous wall? - Answers - Steel Sheet Piles
A contractor wil use a single-acting air hammer to drive concrete piles. If the pile
weights 21,480 lb, what is the recommended hammer weight? - Answers - 21,480 lb
A contractor will use a single-acting hammer to drive concrete piles. If the pile weighs
21,480 lb, what is the minimum weight that can be used? - Answers - 7,088.4
Shaping the material to the final earthwork grade required by the specifications. -
Answers - Finish Work
The surface produced by grading native earth, or the imported materials that serve as
the foundation layer for paving structural section. - Answers - Subgrade
When the loading equipment and hauling units operate at the same production level. -
Answers - Balance Point
A tractor unit that has a blade attached to push material from one location to another. -
Answers - Dozer
Transmissions that can be moved while transmitting full engine strength - Answers -
Power Shifts
Rock that has been blasted from an excavation. - Answers - Shot Rock
Good quality fly ash can replace a portion of the lime needed to stabilize a clay-type
soil. - Answers - True
Soils can be classified according to their sizes of the particles of which they are
composed, by their physical properties, or by their behavior when the moisture content
varies. - Answers - True
In many cases, the locally available materials in their natural state meet engineering
requirements, and thus it is unnecessary to modify them in some cost-effective way to
meet project demands. - Answers - False
VERIFIED ANSWERS
Protective cover for steel or timber pile. This usually is concrete , added at the water or
ground line, where all types of piles are most vulnerable to corrosion and insect attack. -
Answers - Pile Encasement
Pile driven until friction between pile surface and soil are great enough to support loads
placed on them. Used when firm bearing it too deep to provide support for an end
bearing pile. - Answers - Friction Pile
A type of pile splice used at the joints of pipe pile to splice two sections together. -
Answers - Drive Sleeve
An H or wide-flange (WF) member driven at intervals of a few feet into which horizontal
lagging is placed to support the walls of an excavation. - Answers - Soldier Pile
A pile made up of two or more types or sizes of piles joined together. The connection
between the components is designed to transmit load and to precent separation during
and after construction. - Answers - Composite Piles
A temporary wood or steel sheet piling braced single-walled, rectangular shaped
enclosure installed to permit construction of a foundation below ground or water level. -
Answers - Rectangular Cofferdam
Precast concrete piles can be removed form the forms as soon as the concrete has a
compressive strength of 3,500 psi. - Answers - True
Steel pipe piles are most efficient as friction piles as they have substantial surface area
that interacts with the surrounding soil to provide significant frictional load resistance. -
Answers - True
Steel piles have a high load-carrying capacity for a given weight of pile than concrete
piles. - Answers - True
Square and octagonal concrete piles are cast in vertical forms. - Answers - False
When the depth of support is large or when the loads are great, it is necessary to
incorporate a tieback or bracing system with the sheet piles. - Answers - True
What type of leads system has a pivot at the crane's boom top and a brace at the
bottom that attaches to the crane? - Answers - Fixed Leads
, Which type of pile must be handled with care to prevent breakage or damage due to
flexural stresses? - Answers - Precast-Prestressed Concrete piles
Which type of pile hammer performs especially well in cohesive or very dense sole
layers? - Answers - Disel Hammers
Which type of pile is suggested for marine applications? - Answers - Concrete-Steel
Composite Piles
Which type of pile is a rolled section that is interlocked with adjacent sections to form a
continuous wall? - Answers - Steel Sheet Piles
A contractor wil use a single-acting air hammer to drive concrete piles. If the pile
weights 21,480 lb, what is the recommended hammer weight? - Answers - 21,480 lb
A contractor will use a single-acting hammer to drive concrete piles. If the pile weighs
21,480 lb, what is the minimum weight that can be used? - Answers - 7,088.4
Shaping the material to the final earthwork grade required by the specifications. -
Answers - Finish Work
The surface produced by grading native earth, or the imported materials that serve as
the foundation layer for paving structural section. - Answers - Subgrade
When the loading equipment and hauling units operate at the same production level. -
Answers - Balance Point
A tractor unit that has a blade attached to push material from one location to another. -
Answers - Dozer
Transmissions that can be moved while transmitting full engine strength - Answers -
Power Shifts
Rock that has been blasted from an excavation. - Answers - Shot Rock
Good quality fly ash can replace a portion of the lime needed to stabilize a clay-type
soil. - Answers - True
Soils can be classified according to their sizes of the particles of which they are
composed, by their physical properties, or by their behavior when the moisture content
varies. - Answers - True
In many cases, the locally available materials in their natural state meet engineering
requirements, and thus it is unnecessary to modify them in some cost-effective way to
meet project demands. - Answers - False
