Crane Jib
I need the Safe working load for a Crane Lift Formula……Please Help? Hello, i am goin in on Dec 5 to write the millwright C of Q for the 3rd time. On the test there was a question that we...
I need the Safe working load for a Crane Lift Formula……Please Help?
Hello, i am goin in on Dec 5 to write the millwright C of Q for the 3rd time. On the test there was a question that went something like this “The crane is rated 40Ton, with a boom lenght of 40ft and at an angle of 70 deg. The jib is 8ft long on a 10 deg angle. What is the sefe working load.” The numbers are not correct but that is how the question is phrased. Please help me with the formula. I cannot find it anywhere.
KlimBim – Thanks for the help but could you explain further. Remember, I am not too smart I got 69% on the test and i needed 70%. 
Normally you would get a chart for that crane and you look up the SWL at the extension and angle you would want to use, but you can calculate this too.
Basic formula; mass*distance = newmass*newdistance, in the case you have described you have to take into account that the distance is not the load arm as it is not at a right angle to the force the mass has and therefore you would have to work that out via trigonometry.
Any clearer?
|
|
ProAm 12 ft DVC250 Camera Crane Boom Jib with Stand! NR $0.99 |
|
|
Compact Movie Camera Jib Crane for Video Film hvx200 dv $120.00 |
|
|
CONTRX JIB CRANE 1/2 TON 8FT FLOOR MOUNT $250.00 |
|
|
GENIE TMZ34 TOWABLE BOOM SCISSOR LIFT CRANE JIB $1,525.00 |
|
|
National 600B Crane w/67ft.Boom and 35ft Jib, 1996 Mack $10,000.00 |
|
|
1972 Drott 2500 Rough Terrain 30 Ton Crane w 40′ jib $0.99 |
|
|
12 ft. Video Camera Crane Jib with Stand, LCD, Dolly $799.99 |
|
|
PROAIM 12ft JIB camera crane & motorized head joystick $727.00 |
|
|
Pro Am ProAm DVC200 Video Camera Crane Jib Boom NEW NR! $18.27 |
|
|
Cobra Crane Mamba Crane – Handheld Jib $247.99 |
|
|
Tommyjib Heavy Duty 12′ Camera Crane Jib $199.00 |
|
|
TOP MOUNT CAMERA BRACKET 8FT Crane Jib FREE SHIPPING!! $149.00 |
|
|
Compact Mini video 5′ camera crane jib $139.00 |
|
|
12 ft. Video Camera Crane Jib + Stand, Bag, Remote, LCD $449.99 |
|
|
14′ jib camera crane pan tilt head tripod stand lcd arm $1,078.21 |
|
|
ProAm 12 ft DVC250 Camera Crane Boom Jib with Stand! NR $76.00 |
|
|
Tommyjib Heavy Duty 8′ Camera Crane Jib with stand $239.00 |
|
|
12 ft. Video Camera Crane Jib with Stand New $275.00 |
|
|
Jib Crane 2-Ton CM Electric Hoist $2,250.00 |
|
|
Tommyjib Heavy Duty 8′ Camera Crane Jib $179.00 |
|
|
Bruder MB Actros Pole Loading truck w Portal Jib Crane $74.95 |
|
|
PROAIM Jr. Pan Tilt Head fr JIB Arm Camera Crane Tripod $466.23 |
|
|
Pro Am ProAm DVC200 Video Camera Crane Jib Boom NEW NR! $18.27 |
|
|
Two 1/4 Ton Jib Cranes – One with ARO 1/2 Ton Air Hoist $850.00 |
|
|
TAWI SPANCO Jib Cranes LIFT SYSTEMS VACUUM Easy lift $7,000.00 |
|
|
12′ jib cam crane Jr. pan tilt motorized head joystick $735.92 |
|
|
E31-b Ruston Bucyrus 22-B Crane w/Fly Jib KIT $42.95 |
|
|
HO: TICHY 8007: JIB CRANE $5.95 |
|
|
PROAIM 12ft Jib arm cam crane w stand fr dv hdv 20lbs $335.00 |
|
|
Kessler KC-8 Camera Crane Jib w/ Case for XH-A1 HVX200 $589.95 |
|
|
BarberTech TSR Camera Jib / Crane with pan/tilt head $4,000.00 |
|
|
ProAm 12 ft DVC250 Camera Crane Boom Jib with Stand! NR $282.77 |
|
|
Vestil Floor Mounted Jib Crane 2000-Lb. Capacity – NEW $1,399.99 |
|
|
Vestil Floor Mounted Jib Crane 1000-Lb. Capacity – NEW $1,269.99 |
|
|
Vestil Floor Mounted Jib Crane – 300-Lb. Capacity – NEW $879.99 |
|
|
Vestil Floor Mounted Jib Crane – 600-Lb. Capacity – NEW $999.99 |
|
|
Vestil Concrete-Filled Base for Portable Jib Crane 36in $529.99 |