NCCCO Lattice Boom Crawler (LBC) Crane 2024 Exam Review Questions and Answers 100% Pass

On a lattice boom crawler crane, the main boom length is measured from the: - Center of the boom heel pins to the center of the boom tip sheave What is the main purpose of mid point suspension pendants? - To absorb shock that comes with dynamic loading The main purpose of a gantry or a mast on a crane is: - To increase the crane's leverage on the boom What effect does having the crawlers retracted have on a crawler crane with a long boom - Increases the probability of tipping When using a mobile crane on a barge, the crane's load capacity chart shall be - Replaced by a list chart Blocking can be placed under the ends of tracks to: - Increase the crane's stability when operating over the front or back A crawler crane is based on ________ stability of static load. - 75% What quadrant produces the least amount of ground pressure on a lattice crawler - Side When a crawler crane is on a barge, the list chart must be provided by the - Manufacturer When operating a crawler crane, the ground pressure will always be highest over the - Corner Unless working in loos soft soil, a crawler crane should always travel _____ on pick and carry operations - Towards the load Why use mats of cribbing - To reduce ground pressure Mats are usually _____ to hold together. - Bolted A crawler crane traveling forward is defined as traveling in the direction of - The idler When disassembling or assembling booms on lattice boom cranes, it is extremely important to - Never touch any pin on any boom section located between the pendant attachment points and the crane On a lattice boom crane, the device that automatically stops the boom when it nears the maximum angle is the - Boom hoist kick out When is it safe to handle loads under power lines - The load nor any part of the crane can come closer than regulations allow Manufacture specs only permit a certain amount of boom to be suspended out past the connection point of the pendants during assembly or disassembly of the boom. This portion of boom is called the - Cantilever Length When installing a pin-connected lattice boom on a mobile crane, you should always - Use the boom hoist pawl to hold the boom When making a lift with a lattice boom crawler crane, ground pressure can be reduced by lifting over the - Side Pendant spreader bars on long booms are used to prevent - Main pendants from scrubbing the boom sides By order of hitch strength, which is the correct answer - Basket, vertical, choker When taking a side strain on a boom, what concerns the operator most - Boom Damage You should always have at least how many wraps on a hoist drum - 2 The primary purpose for a rooster sheave or auxiliary boom point sheave is to - Separate the whip and main hoist lines When operating near powerlines, how far must you be if the voltage is 50-200 - 15' When operating near powerlines, how far must you be if the voltage is 200-350 kV - 20' When operating near powerlines, how far must you be if the voltage is 350-500 kV - 25'