NCCCO LATTICE CRAWLER EXAM
QUESTIONS AND ANSWERS
In order to lift a load,the gantry should be? - -Rasised
-A Lattice crawler crane is the strongest? - -Over the front with tracks toed up.
-Lattice boom gets it straight from the? - -Struts or lattice
-Which pins should never be removed when pendant lines are attached to the boom? - -
Bottom pins before where pendants are attached.
-What percentage is the manufacture rated capacity of a lattice boom crawler crane? - -
75%
-Traveling down a hill with a load on a crawler crane will cause? - -The radius to increase
-A crawler crane is strongest over which quadrant? - -Ends of tracks
-A crawler crane is more stable due to ground conditions over which quadrant? - -Side
-What can be left on the ground when raising long lattice boom to increase stability? - -
Block and ball
-The boom angle on a lattice boom crane is____________ after the load is lifted. - -Angle
between the centerline of the boom and horizontal
-Standard ropes should be removed from service if there are_________ broken wires in a
rope lay at the end connections or_________ broken wires in a rope lay beyond the end
connection. - -1,2
-During a frequent inspection if a bent lattice is discovered on the jib what must be done? -
-Take the Crane out of service
-What will happen if the boom pins are removed between the pendant attachment points
and the crane? - -The boom will fall
-What is the correct way to remove pins from a lattice boom? - -Remove pins from outside
the boom if needed use a long bar
-What is the correct way to remove pins from a lattice boom? - -Removed bottom pins
below attachment points or past first
QUESTIONS AND ANSWERS
In order to lift a load,the gantry should be? - -Rasised
-A Lattice crawler crane is the strongest? - -Over the front with tracks toed up.
-Lattice boom gets it straight from the? - -Struts or lattice
-Which pins should never be removed when pendant lines are attached to the boom? - -
Bottom pins before where pendants are attached.
-What percentage is the manufacture rated capacity of a lattice boom crawler crane? - -
75%
-Traveling down a hill with a load on a crawler crane will cause? - -The radius to increase
-A crawler crane is strongest over which quadrant? - -Ends of tracks
-A crawler crane is more stable due to ground conditions over which quadrant? - -Side
-What can be left on the ground when raising long lattice boom to increase stability? - -
Block and ball
-The boom angle on a lattice boom crane is____________ after the load is lifted. - -Angle
between the centerline of the boom and horizontal
-Standard ropes should be removed from service if there are_________ broken wires in a
rope lay at the end connections or_________ broken wires in a rope lay beyond the end
connection. - -1,2
-During a frequent inspection if a bent lattice is discovered on the jib what must be done? -
-Take the Crane out of service
-What will happen if the boom pins are removed between the pendant attachment points
and the crane? - -The boom will fall
-What is the correct way to remove pins from a lattice boom? - -Remove pins from outside
the boom if needed use a long bar
-What is the correct way to remove pins from a lattice boom? - -Removed bottom pins
below attachment points or past first
