NCCCO CORE EXAM WITH VERIFIED
QUESTIONS AND ANSWERS LATEST
UPDATED
Swing Clearance - Swing clearance must be barricaded. (2' outside swing radius)
Best Leveling Surface On Crane? - Upper works.
Cranes 3° out of level will? - Decrease capacity by as much as 50%.
Never block under outrigger beams.
Truck crane pick over front require front outrigger load chart.
Spans and gapped blocking fails at 50% load and destroys pads.
Plus add to excessive boom side loading and sheeve wear.
Level not to exceed <1°
When Swinging Unlevel Crane? - Load Radius Increases.
Extended Crawlers Will? - Increase over the side capacity.
Greatest Ground Pressure Exerted By Crane? - Over rear corner (outriggers)
Corners (crawlers)
Least Exerted Ground Pressure By Crane? - Over side (both outrigger and crawler)
Greatest Crane Lifting Capacity? - Rear (outriggers and crawlers)
, Distance from Excavations? - 1.5 ratio, I.E 10' Deep Excavation
10x1.5=15' from outrigger pad.
Newly Compacted Soil near walls is a 1-1 ratio.
OSHA 29 CFR 1926.1404 ASSEMBLY/DISASSEMBLY - AD director must be available,
Must be competent or qualified.
AD must understand the Assembly Disassembly procedures.
AD must ensure crew members understand their
-Tasks
-Associated Hazards
-Haz Positions, Locations to avoid.
-Site and Ground Conditions
-Blocking
-Assembly, "always install upper pins 1st"
-When Pins are Removed, noone is allowed under boom until proper safety precautions
are taken to minimize risk.
Cantelever Boom Sections Must? - Not exceed mfg limitations and instructions for boom
lengths.
Order Of Boom Section Assembly is? - Short to Long, unless mfg recommends
otherwise.
Use Dog (Pawl)? - When Assembling.
OSHA 29 CFR 1926.1408 Covers? - Power Lines. Voltages Under 350kv.
Per OSHA 1926.1408 (Table A) Minimum Line Clearance Distances While Stationary
Are? - 0-50kv / 10'
50-200kv / 15'
200-350kv / 20'
350-500kv / 25'
500-750kv / 35'
750-1000kv / 45'
"OVER 1000KV UTILITY/REGISTERED PROFESSIONAL ENGINEER, who is
qualified, WILL ESTABLISH SAFE DISTANCES"
Per OSHA 1926.1411 (Table T)
QUESTIONS AND ANSWERS LATEST
UPDATED
Swing Clearance - Swing clearance must be barricaded. (2' outside swing radius)
Best Leveling Surface On Crane? - Upper works.
Cranes 3° out of level will? - Decrease capacity by as much as 50%.
Never block under outrigger beams.
Truck crane pick over front require front outrigger load chart.
Spans and gapped blocking fails at 50% load and destroys pads.
Plus add to excessive boom side loading and sheeve wear.
Level not to exceed <1°
When Swinging Unlevel Crane? - Load Radius Increases.
Extended Crawlers Will? - Increase over the side capacity.
Greatest Ground Pressure Exerted By Crane? - Over rear corner (outriggers)
Corners (crawlers)
Least Exerted Ground Pressure By Crane? - Over side (both outrigger and crawler)
Greatest Crane Lifting Capacity? - Rear (outriggers and crawlers)
, Distance from Excavations? - 1.5 ratio, I.E 10' Deep Excavation
10x1.5=15' from outrigger pad.
Newly Compacted Soil near walls is a 1-1 ratio.
OSHA 29 CFR 1926.1404 ASSEMBLY/DISASSEMBLY - AD director must be available,
Must be competent or qualified.
AD must understand the Assembly Disassembly procedures.
AD must ensure crew members understand their
-Tasks
-Associated Hazards
-Haz Positions, Locations to avoid.
-Site and Ground Conditions
-Blocking
-Assembly, "always install upper pins 1st"
-When Pins are Removed, noone is allowed under boom until proper safety precautions
are taken to minimize risk.
Cantelever Boom Sections Must? - Not exceed mfg limitations and instructions for boom
lengths.
Order Of Boom Section Assembly is? - Short to Long, unless mfg recommends
otherwise.
Use Dog (Pawl)? - When Assembling.
OSHA 29 CFR 1926.1408 Covers? - Power Lines. Voltages Under 350kv.
Per OSHA 1926.1408 (Table A) Minimum Line Clearance Distances While Stationary
Are? - 0-50kv / 10'
50-200kv / 15'
200-350kv / 20'
350-500kv / 25'
500-750kv / 35'
750-1000kv / 45'
"OVER 1000KV UTILITY/REGISTERED PROFESSIONAL ENGINEER, who is
qualified, WILL ESTABLISH SAFE DISTANCES"
Per OSHA 1926.1411 (Table T)
