Recently a question was asked as to the need for intermediate blocking between wall bottom plate(s) and bearing walls in installations where walls are installed on top of bottom chord bearing floor trusses using a ribbon board as shown in Figure 2.15a of the Wood Frame Construction Manual 2012. (Note - Figure 2.15a refers to the ribbon board as “Band”; see Figure 1).
Currently, the capacity of a ribbon board and its system through the composite of the ribbon board, floor sheathing and bottom plate of the wall has not been ascertained. In order to provide better guidance, a series of tests were conducted at the Structural Building Component Research Institute (SBCRI) in order to determine the capacity of the ribbon board system.
Currently, the capacity of a ribbon board and its system through the composite of the ribbon board, floor sheathing and bottom plate of the wall has not been ascertained. In order to provide better guidance, a series of tests were conducted at the Structural Building Component Research Institute (SBCRI) in order to determine the capacity of the ribbon board system.
This legacy SBCA Research Report represents information and code requirements current as of the publication date shown. However, codes and standards change periodically. The user is encouraged to verify the referenced information is still current and conforms to current code requirements.
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