chrismc
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| posted on 31/12/06 at 01:24 PM |
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new garage question
Hi. I am at last getting my long waited double garage built an i have decided on a 'built in ' engine hoist. 
This will consist of a Block and tackle suspended on a Girder trolley running on a RSJ.
The Girder trolley is adjustable from 64mm to 140mm in width.
The span of the Rsj will be 16ft.
The trolley and tackle are rated at 500kg
Question: Do I need the full 140mm wide RSJ or will a narrower one do? Cheers Chris
[Edited on 31/12/06 by chrismc]
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Peteff
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| posted on 31/12/06 at 02:37 PM |
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Ask at the steel stockist, something like a 7"x4" should do what you want, it's holding the upstairs of our house up. 
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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scottc
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| posted on 31/12/06 at 02:46 PM |
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I think Hellfire and at least one other person on here has a similar arrangement. Might want to see what they're using. 
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pjavon
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| posted on 31/12/06 at 03:16 PM |
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I would use a 203 x 133 x 25 Kg U/B(universal beam) RSJ are not readily available nowadays and a lot more expensive, any steel fabrication firm should
have one in stock and cost about £60-£80 depending on how much they charge per tonne
the beam weighs 25 Kg per metre if you need to work the weight out ( 16Ft= 123 Kg approx)
Hope this helps
Always keep a big hammer and a condom in your toolbox, if you can't fix it with the hammer
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Peteff
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| posted on 31/12/06 at 04:41 PM |
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Some sizes here for an idea. You'll need a pretty thick one to run a trolley
on.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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chrismc
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| posted on 31/12/06 at 05:04 PM |
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thanks guys!
Looking at the spec I agree 203x133 25kg/m is the one to go for.
Nice one.
Cheers Chris
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