FREE NCCCO Tower Crane Erection, Climbing, and Dismantling Questions and Answers

Question 1

When erecting a tower crane, what is the most important reference for determining the correct torque values for structural bolts?

Accepted Answer

The manufacturer's erection manual

Answer

The crane operator's manual

Answer

OSHA regulations

Answer

The project engineer's specifications

Question 2

According to most manufacturers, at what wind speed should tower crane erection or dismantling operations typically be suspended?

Accepted Answer

As specified by the manufacturer, but generally not exceeding 20-25 mph

Answer

15 mph

Answer

35 mph

Answer

45 mph

Question 3

During a tower crane climbing operation, what is the correct sequence after the climbing frame has lifted the upper part of the crane?

Accepted Answer

Insert the new tower section, install and torque all connecting bolts, then lower the crane onto the new section

Answer

Immediately insert the next tower section and climb again

Answer

Lower the crane onto the new section, then install the bolts

Answer

Check the weather forecast before inserting the new tower section

Question 4

Who is ultimately responsible for verifying that the tower crane's foundation has reached the required compressive strength before erection begins?

Accepted Answer

The Erection Director / Lift Director

Answer

The crane operator

Answer

The concrete testing laboratory

Answer

The general contractor's site superintendent

Question 5

When dismantling a tower crane, what is generally the first major component to be removed after the crane is prepared?

Accepted Answer

The counterweights

Answer

The tower mast sections

Answer

The jib (boom)

Answer

The cab and slewing ring assembly

Question 6

When using an assist crane for tower crane erection, what is a critical calculation for the lift plan?

Accepted Answer

Ensuring the assist crane's capacity is sufficient for the heaviest component at the required radius and height

Answer

The color of the assist crane

Answer

The operator's years of experience

Answer

The time of day the erection will take place

Question 7

What is the primary purpose of tying a tower crane to the building structure?

Accepted Answer

To allow the crane to climb higher than its free-standing height

Answer

To provide an electrical ground for the crane

Answer

To provide a walkway for maintenance personnel

Answer

To reduce the amount of counterweight needed