Return to course: By Engineer or By Supplier? How “Involved” to Be in Choosing Engineered Lumber
By Engineer or By Supplier? How “Involved” to Be in Choosing Engineered Lumber
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Quiz
Quiz
A “rim board” component performs a role in which of the following categories:
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Vertical Load Transfer
Lateral Load Transfer
Minimizing Building Vertical Movement (“Shrinkage”)
All of the above
What concerns could there be if LVL (vs LSL) is selected as a rim board component?
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There are no concerns, LVL and LSL are interchangeable components.
LVL does not permit the same nail patterns that certain grades of LSL allow. Lateral load transfer capacities could be compromised.
Neither LVL nor LSL should be used as rim board.
None of the above
Some design professionals prefer to leave I-joist selection to suppliers. Suppliers may assume the lowest-cost solution is sufficient, resulting in areas of a floor deflecting or vibrating more than what the client expected. What are some potential steps to avoid this situation?
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Provide a minimum acceptable size and type of I-joist in select areas of the floor.
Nothing can be done about this situation.
Use tools such as TJ-Pro™ Rating to assign a minimum required vibration performance level.
Answer a) or c)
Design professionals typically can select I-joists and Structural Composite Lumber components, but not components like roof trusses. Why is that?
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Design professionals typically do not have access to the specialized software tools used by truss manufacturers to determine truss sizes and connectors.
I-joists and Structural Composite Lumber can be designed using publicly available span charts, load tables and software.
Answers a) and b)
None of the above.
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