BREAKDOWN
What is a toe in relationship to a Cofferdam?
The vertical sheeting extended below the bottom of the excavation at least 2 feet
According to the OSHA Construction Safety Standards, what is required for shoring
systems more than 20 feet deep?
The Registered Professional Engineer shall design the protection system
What is another name for Sheeting?
Uprights
What does "close sheeting" mean in relationship to a shoring system?
The spacing between timber planks not to exceed ½ inch
Which piece of equipment and attachment would be the most efficient method to excavate
inside a cofferdam?
Crane with a Clamshell attachment
Which piece of equipment sits below the excavation and the bucket pushes up?
Power Shovel
Which piece of equipment is used to excavate ponds or soil under water?
Dragline
Which piece of equipment has its boom above the structure and lifts the load vertically until
it is above the structure, then it can move the load horizontally?
Tower Crane
Which piece of equipment is most efficient for compacting granular soils such as sand,
gravel, and crushed stone?
Smooth-Wheel Roller
Which of the following temporary systems is utilized to support freshly placed concrete
which is poured continuously in a vertical direction?
Slip form system
Which of the following temporary systems is utilized to support freshly placed concrete
which is poured on the ground as a slab and lifted up to its final horizontal elevation using
hydraulic jacks?
Lift slab form system
, What is the concrete pouring method called that is used to pour concrete under water?
Tremie
Which organization has published a new design standard targeting loads on structures
during construction?
Structural Engineering Institute of the American Society of Civil Engineers
What is the primary cause for a masonry wall to collapse while under construction?
Lack of masonry wall bracing and a change in wind conditions
Which of the following sling angle ranges is best for lifting without making the lift
extremely dangerous?
45 degrees to 90 degrees
You have an assumed sling angle of 24 degrees but the actual angle is 19 degrees. What
effect does this have on the pounds per leg on the sling?
The pounds per leg will increase
What is the working range of a Clam Shell?
00 - 24 degrees
What is the working range of a Lift Crane?
55 - 80 degrees
What is the working range of a Dragline?
25 - 39 degrees
Assume you are lifting an item onto the roof. The Height of the exterior wall is 27 feet
above the ground and the horizontal distance from the centerline of the rotation is 40 feet.
What is the minimum length of the boom required?
70 Feet
Assume you are lifting an item onto the bridge deck. The Deck is 27 feet above the ground
and the horizontal distance from the centerline of the rotation is 40 feet. What is the
minimum boom angle?
57 degrees
Assume you are lifting an item onto the bridge deck. The deck is 37 feet above the ground
and the horizontal distance from the centerline of the rotation is 70 feet. What is the
minimum length of the boom required?
120 Feet