NCCCO RIGER 1 UPDATED 2026 EXAMINERS
QUESTIONS AND ANSWERS SURE A+
✔✔Best Leveling Surface On Crane? - ✔✔Upper works.
✔✔Cranes 3° out of level will? - ✔✔Decrease capacity by as much as 50%.
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)
Minimum Line Clearance Distances While Traveling Are? - ✔✔<0.75kv / 4'
QUESTIONS AND ANSWERS SURE A+
✔✔Best Leveling Surface On Crane? - ✔✔Upper works.
✔✔Cranes 3° out of level will? - ✔✔Decrease capacity by as much as 50%.
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)
Minimum Line Clearance Distances While Traveling Are? - ✔✔<0.75kv / 4'
