CCO 3

The crane is out of level, you release the swing brake, the boom swings downhill, you radius

Blocking can be placed under the ends of tracks to

What quadrant produces the least amount of ground pressure on a lattice crawler

On lattice boom cranes fitted with power load lowering, a heady load should be lowered using the

Abruptly stopping a rapid swing on a long boom mobile crane will produce what major effect

When the boom handle is released to its center position, which action should be expected

On a lattice boom crawler crane, the main boom length is measured from the

If you can't level a crawler crane

What effect does having the crawlers retracted have on a crawler crane with a long boom

If your crawler crane s on a barge, it is necessary to

A pin-connected lattice boom is being dismantled. After connecting the equalizer (bridle) to the connecting lugs on the boom, which boom connecting pins should be removed first

When using a mobile crane on a barge, the cranes load capacity chart shall be

How many broken wires are permitted at the end connection of a pendant before it must be taken out of service

If high winds are expected and the lattice boom crane must be secured pointing into the wind, then the hook should be

When assembling a lattice boom on most crawler cranes using inserts of different lengths, which insert section generally should be closest to the boom foot

During assembly where should you attach slings to lift boom sections

Which boom configuration can cause the most hazardous boom side-loading condition

When is it safe to handle loads under powerlines

On a lattice boom truck crane, boom angle is measured between the centerline of the

When a lattice boom truck crane is lifting on outriggers, the floats or pads should always be

Manufacturer specifications permit only a certain amount of boom to be suspended out past the connection point of the pendants during assembly or disassembly of the boom. The portion of boom that is suspended in this way is called the

When lattice boom is being disassembled or shortened it is extremely important to

When installing a pin-connected lattice boom on a mobile crane you should always

When you change the jib to ground angle from 40 degrees to 30 degrees you have

A lattice boom truck crane with a 120 ft boom will be operating at a 42 ft radius. the load chart shows and entry indicating 25,000 lbs at a 40 ft radius, followed immediately by an entry listing 20,000 lbs at a 45 ft radius. what is the cranes capacity at the 42 ft radius

A truck crane operating with outriggers fully extended and set, does not have a fifth front outrigger, the operator should

A crane that climbs a 7% grande, one mile hill, should descend down the hill in

A lattice boom truck crane, when setup out of level, will lose the most capacity with

The device that automatically stops the boom when it nears the maximum angle is the

When a lattice boom truck crane is operating on properly set outriggers, the tipping axis is located at the

The purpose of placing mats or cribbing under outrigger floats is to

A crane loses stability when its leverage on the load is

If a lattice boom truck crane is going to perform work over the front it must have

Each outrigger pad and its blocking should be sufficient to support

How does high wind affect the setup of a crane with a long boom

When a lattice boom truck crane that is properly set up with no front outrigger and the boom is positioned over the front, the combined center of gravity of the carrier and upperworks will move

When personnel platforms are lifted with a telescopic crane

What item can be removed from a carry deck crane

The lever on the far left of most hydraulic cranes is

A telescopic crane is equipped with an anti-two-block lock-out device. then the device is activated which functions should be disabled

When transporting a load on the deck of a carrydeck crane, the operator should

Jib capacities are based on

When making a lift on outriggers, the maximum ground-bearing pressure occurs

A cranes jib is offset 15 degrees verses its original 0 degrees offset, but the boom angle remains unchanged. In this situation, the load radius

Blocking which is not tightly placed may fail at

If the jib is offset, the cranes capacity will be

The safest speed fro a crane carrying a load is

The boom angle indicator indicates

When performing a pick and carry lift with a R/T hydraulic crane, which of the following is the most important consideration

In setting up the crane, the operator can extend 3 outriggers fully and only 1 halfway out, but all vertical cylinders are down, and floats are on good supports. The operator must