QUESTION
I am a building inspector and I have a question on information provided on truss design drawings. What does the uplift reaction number represent? Some manufacturers are very specific and state “to provide for mechanical connection of the truss to the top plate with a connector capable of withstanding a specific load.” Others simply list the uplift reaction with no further information. These are the ones that have caused a debate as to what the number actually represents. Some say the uplift is a net number to size a connector to, and others say it is a gross number that can be reduced and a lower rated truss connector used. Unless the engineer can provide calculations and be willing to “stamp” the calculations, we have stood by the uplift load listed, as the load to size the connector to.
I am a building inspector and I have a question on information provided on truss design drawings. What does the uplift reaction number represent? Some manufacturers are very specific and state “to provide for mechanical connection of the truss to the top plate with a connector capable of withstanding a specific load.” Others simply list the uplift reaction with no further information. These are the ones that have caused a debate as to what the number actually represents. Some say the uplift is a net number to size a connector to, and others say it is a gross number that can be reduced and a lower rated truss connector used. Unless the engineer can provide calculations and be willing to “stamp” the calculations, we have stood by the uplift load listed, as the load to size the connector to.
This document is effective until December 31, 2025. After that date, this dated version of the document should not be relied upon.
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