Nccco crane - Study guides, Class notes & Summaries

Overhead cranes with more than one hoisting unit shall have? - Answer Its rated load marked on it. How often does O.S.H.A. require a written wire rope inspection? - Answer Once a month What is the purpose of the "E" (Emergency) stop on an overhead crane? - Answer Removes power to entire crane. Most loads should be rigged to within how many degrees of level? - Answer 5 According to ASME B30.2, what is the safety factor for rigging? - Answer 5 to 1 According to O.S.H.A. ...

According to federal requirements, under what conditions is it okay for a person to ride the headache ball? It is never okay Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall? At least as far back as the depth of the wall below ground By what percentage do most manufacturers require a crane's load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement? 20%. From which two po...

Before leveling a mobile crane on outriggers, an operator should ensure: - ANSWER there is no weight of the crane bearing on any tires Operating a mobile crane with a long boom, on uneven ground, what support condition should be considered? - ANSWER Keeping 90 degree angle between cylinder rod and pad What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - ANSWER Separate the boom hoist lines How many randomly broken wires in a lay length must there be on a mobil...

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 Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:06 / 0:15 Full screen The main purpose of a gantry or a mast on a crane is: To increase the crane's leverage on the boom ...

Load chart capacities distinguished in bald type, marked with an asterisk, in a shaded area, or above a bold line of the capacity chart are based on: (a) net capacity (b) dynamic loads (c) structural strength (d) tipping - (c) structural strength The proper way to calibrate a boom angle indicator is: (a) Use a protractor (b) dynamic loads (c) boom up against the and set the indicator at 90 (d) boom up or down so boom is horizontal, and level than set - (d) boom up or down so boom is hor...

According to OSHA, when can an operator leave his seat with a suspended load in the air? Almost never (and the exception requires that four conditions be met) List seven ideal conditions for crane operation. 1) Not windy 2) Clear vision (no fog) 3) Sunny (Dry) 4) Crane is maintainenced (greased) 5) Crane is assembled correctly 6) Load is static 7) Site is level What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? It increases ...