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Vibration design was modified to act as a design criterion for single span lumber joists. Previously the program checked vibration, and reported a failure in the Warnings section of the output, but did not consider it when evaluating candidate sections, that is, designing for unknown parameters.
The Design Check output now shows the Vibration length vs design length ratio in the analysis/design table and reports vibration if it is a failing design criterion. The Suggested Sections output for unknown design now also shows the Vibration/Allowable design ratio along side the other design criteria’s ratios.