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Old 16th August 2010, 10:58 AM   #1
mikeyb50
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Default Support an existing cavity wall

I have to calculate a beam opening for a cavity wall on a 1960's house. Woud it be easier to put a single beam for the 250mm cavity (ie 254 x 254 UC) bearing on a single padstone or 2no. 152 x 89 x 16 supporting each skin on individual bearing pads
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Old 16th August 2010, 01:19 PM   #2
Tony Bryer
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Default Re: Support an existing cavity wall

There are arguments in favour of both options. The 254x254 will be stronger and stiffer and a lot more resistant to lateral torsional buckling but even the lightest roll is 73.1kg/m which is a hefty section to handle. Twin sections are a lot easier to install which is why most builders prefer them, but if the loads on each leaf differ significantly, the two members should be checked individually. Note that twin sections should be bolted together with tube spacers at 1.5m max c/s.
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Old 16th August 2010, 05:00 PM   #3
mikeyb50
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Default Re: Support an existing cavity wall

Thank you for that, how's eurobeam coming along I'm using both prosteel and superbeam
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