Post Crane Design

Post Crane Design
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Posted by: Robertrgn1 ^®

01/11/2009, 10:55:12

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Hi Guys really require some assistance. Just gone back to uni to study for my BSC after 10 years away finding it difficult. So really need some help. Basically as part of our design project we are looking at the design of a post crane, with a lifting capacity of 3 tonnes. the radius of the crane will be around 3.25m. The hieght from the lower part of the jib to the floor will be around 3,5m. The crane will have the capability of rotating through 270 degrees. There is a restriction of hieght on the crane of 4.5m. Due to the hieght restriction the crane will most probabaly have to be under supported. The crane will be of a free standing post crane design and secured to a concrete base. The crane will be require to be rotated electrically.

Having very little exeprience in this field and having such a large gap away from uni, I would appreciate any advice possible on where to start with the calculations required to work out the beam sizes required for the crane, along with the foundation base sizes, holding down bolts etc. i have obtained the BS for Post Crane designs BS7773 but I am unsure how to work out the maximum permissible bending moments etc to comply with the standard. Any information would be much appreciated or any advice where I can find the guidlines on how to perform the required claculations for such a design to comply with the BS would be really helpful. I understand that such claculations need to be carried out by qualified Engineers, but this is purley for a uni based project.

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