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Vanish
Participant

Join Date: Jul 2011
Location: Delhi, India
Posts: 1

Strength of Lifting Member

07/25/2011 2:19 PM

Hi,

Among my engineering problems, I need to design a Lifting system for an Equipment / Machine having 60 kN of weight. There are 4 lifting points.

The members are to be in bolted construction.

Please Refer figure for arrangement.

The members are subjected to a spacial forces.

What is the design consideration / approximation to be adopted for solving this kind of problem?.

Could anyone please explain the design criteria for finding the strength of Members?.
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pipeit
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Join Date: Dec 2007
Posts: 142
Good Answers: 1
#1

Re: Strength of Lifting Member

07/25/2011 4:36 PM

Sling angles for sling loads is a start.
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jlstitt
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Join Date: Apr 2011
Location: pittsburgh
Posts: 180
#2

Re: Strength of Lifting Member

07/26/2011 2:37 AM

all the information you need is in the asic steel construction manuel. it's the "hand book" for any engineer in the steel construction and desisign industry. it contains all the information you need to know. it costs about $75.00.
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jlstitt
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Join Date: Apr 2011
Location: pittsburgh
Posts: 180
#3

Re: Strength of Lifting Member

07/26/2011 3:01 AM

the only unknown factor is the strength of the anchoring points. you "must" consult the manufacturer as to the correct installation unless it has been pre-designed and has been delivered with the anchors installed by the manufacturer. . this is the weakest point of your rigging.
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jcmcdonell
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Join Date: Jul 2011
Location: Home of the Mile High City
Posts: 3
#4

Re: Strength of Lifting Member

07/27/2011 9:24 PM

Have you've asked your Professor/ Instructor what they're criteria is? And what are the special forces that have to be considered? Basic weight and balance calculations would get you going in the direction.

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Gannet
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Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Marine Engineering - New Member Engineering Fields - Aerospace Engineering - Aeromarine Vehicle Engineer

Join Date: Mar 2008
Location: Baltimore, MD
Posts: 148
Good Answers: 5
#5

Re: Strength of Lifting Member

07/28/2011 11:29 AM

I believe some of the special forces handling loads factors, transportation limit load factors, if it is a mobile crane moving the load from one point to another, and also wind loads.

Get a copy of ASME B30.9 2003 SLINGS it is available for free on the internet
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