Is there a 1 hour rated ceiling below the truss and a 1 hour rated 
floor above the truss? What is the truss spacing? Are they made with 
fire retardant lumber? If it doesn't meet any on the exceptions in 
8.14, then it should be sprinklered. Are the AHJs accepting this?



At 07:56 AM 6/1/2009, you wrote:
>We have a growing trend up here in which contractors are not installing
>sprinklers in combustible floor spaces (open wood truss) simply because
>there is a 1hr rated floor and ceiling assembly which sandwiches the
>combustible space.  We have been including sprinklers for these areas in
>our bids but have been loosing work because of this.  Am I missing
>something and can sprinklers be omitted?
>Thanks,
>Dewayne Martinez
>Design Build Fire Protection
>New Berlin, WI
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080  
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