I-Joist Squash Blocks

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Provided by: APA - The Engineered Wood Association
Topic: Software
Format: PDF
Squash blocks are required in conventional platform construction where loads from above are transferred down through the floor into the wall or foundation below. This occurs where load-bearing walls fall on floors or posts supporting headers are located within the walls. Beneath these wall and point loads, the I-joists usually do not have enough interior reaction or exterior reaction capacity remaining to safely transfer these loads without risking a web-bearing failure. The solution is to place extra load-carrying members in line with these loads and insure that these squash blocks carry the load and the I-joists do not.
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