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Bonus Rooms

     

 

A bonus room is a room typically situated over a garage or other area to create a usable space within the roof structure. The space can be created using “attic trusses” or by framing TJI® ceiling joists and conventional rafters with knee walls. Below are links to technical bulletins that provide TJI® ceiling joist span tables when used in bonus room applications. Select the link that corresponds to the appropriate roof load for your area.

TB - 813 (Roof Live Load 20 psf / 125%)

TB - 814 (Snow Live Load 20 psf / 115%)

TB - 815 (Snow Live Load 30 psf / 115%)

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