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Component Manufacturing dverti$er
August 2017 #10217 Page #82
On the one hand, these are completely different topics. But on the other hand, they b You Saw it in the Adverti$er movement; which needs to be properly addressed when incorporating trusses into th it’s sensible to discuss them together in one piece. Don’t Forget!
Accommodating Seasonal Up-and-Down Movement Truss Movement
(Besides Vertical Deflection) This type of movement goes by many different names that might sound familiar – t
uplift, partition separation, or – to use the most formal name – ceiling-floor partition these names describe the separation that develops between interior partition walls a Vertical deflectionwhich resulting livegaps and dead loadsdrywall – of both to roof and floor framing components canfrom cause in the open in the winter and close in the summer. – is an important serviceability consideration in the overall design of the building. And while this could be a topic in and of itself, article is instead to focus on two other types trussalways movements oftenthisconsidered to begoing a truss issue; however, it isofnot the trusses that do the that often prompt questions: seasonal up-and-down movement (of the trusses relative to the walls) and horizontal movement (of scissor walls ortrusses). floors, or both, beneath the trusses.
By Kelly Sias, PE
On the one hand, these are completely different topics. But on the other hand, they both deal with movement; which needs to be properly addressed when incorporating trusses into the overall building. So it’s sensible to discuss them together in one piece.
This issue is also not limited to truss construction, but can also occur with other typ construction. The truss industry has information on this topic to help educate the ma Seasonal Up-and-Down Movement of ceiling-floor partition separation, best practices and construction techniques for m This type of movement goes by many different names that might sound familiar – truss arching, truss uplift, partition separation, or – to useand the how most formal name – ceiling-floor partition separation. All of movement, to accommodate this movement in the structure to prevent dryw these names describe the separation that develops between interior partition walls and ceiling finishes, which can cause gaps in the drywall to open in the winter and close in the summer. This movement is often considered to be a truss issue; however, it is not always the trusses that do the moving, but rather the walls or floors, or both, beneath the trusses. This issue is also not limited to truss construction, but can also occur with other types of wood construction. The truss industry has information on this topic to help educate the market about the causes of ceiling-floor partition separation, best practices and construction techniques for minimizing the movement, and how to accommodate this movement in the structure to prevent drywall cracking. For those who are interested in a very PHONE: 800-289-5627
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