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Old 4th October 2011, 08:39 PM   #1
timillustrator
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Default Reduction in imposed load

When entering two floor loads (FF and SF) BS449 allows for a 10% reduction in imposed load for 2 floors. How should I enter this in superbeam?
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Old 7th October 2011, 05:38 PM   #2
timillustrator
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Default Re: Reduction in imposed load

In the absence of a reply I've checked the user manual again but can't find any mention of it here either.
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Old 8th October 2011, 08:36 PM   #3
Tony Bryer
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Default Re: Reduction in imposed load

Sorry for not replying sooner. If you want to take advantage of the reduced loading you need to enter the reduction factor yourself. In principle we could change the handling of B/F loads to allow them to be modified by a factor, but my instinct is that this would be a change that would confuse more people (inc checking engineers) than it helped.
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Old 9th October 2011, 09:48 AM   #4
timillustrator
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Default Re: Reduction in imposed load

Thanks Tony,

It was for checking an existing beam and in the event I didn't apply it as it made no difference to the result. I agree applying a 10% reduction as a factor could be confusing. I presume the clearest way to do it would be to just reduce the weight and add a note to the UTP that this has been done.
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