NCCCO Telescopic Boom Crane- Swing Cab(TLL)

A crane is operating with a long boom, on outriggers, on uneven ground. Under these conditions it is important to

Block under the float or pad to achieve a 90 degree angle between the cylinder rod and the float or pad

What is the purpose of a boom length indicator?

Indicates the extended length of boom

According to OSHA 1926 subpart cc, floats/pads must be fastened to the outrigger/stabilizers when

They are in use

A crane's jib is offset 15 degrees versus it's original 0 degree offset and the boom angle remains unchanged, the load radius will

Increase

When leaving telescopic boom cranes unattended overnight or for longer periods, the boom should be

Fully retracted and stowed

On a telescopic boom truck crane that has all 5 outriggers properly positioned, the working area diagram will indicate the "over front" area is

Determined by the crane manufacturer

According to OSHA 1926 subpart cc, who determines if a crane can be used for pick and carry operations?

The manufacturer

According to OSHA 1926 subpart cc, what function does the holding valve on a vertical outrigger jack perform?

Hold pressure in the vertical ram if a hydraulic connection fails

When a crane's telescopic boom sections are required to be extended equally, and the are not, the

Longest section can be overloaded

With the boom extension mounted on the boom tip, the main boom rating must be reduced to compensate for the boom extension's

Effective weight

According to OSHA 1926.1433, which of the following must be on the crane?

A. A fire extinguisher

B. Anti two-block warning system

C. Battery disconnect switch

D. Vehicle identification number

A. A fire extinguisher

A carrier-mounted crane that is set up on outriggers should have the tires on the carrier

Off the supporting surface

When a rough terrain crane is working on tires, backward tipping is most likely to occur when the unloaded boom is position over the

Side at short radius

When performing pick and carry operations with a rough terrain crane, you should keep the load

Positioned over the front of the carrier

In which outrigger configuration would a crane be the most susceptible to tipping from a rapidly swinging load?

Outriggers up and in

According to OSHA 1926 subpart cc, when extending outriggers from the crane's upper structure, the operator shall

Make visual contact or post a signal person

A luffing jib is

Raised or lowered independent of the main boom

When operating a rough terrain crane, what is the most stable quadrant of operation?

Front

When operating a telescopic boom truck crane, what is the most stable quadrant of operation?

Rear

Capacities of telescopic boom truck cranes are based on what percentage of tipping?

85%

When working on rubber, a rough terrain crane's capacity is based on what percentage of tipping?

75%

What is the primary concern when operating rough terrain cranes on rubber at high boom angles?

Backward stability

During pick and carry operations, how is travel speed determined?

Manufacturers specifications