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truss missing 1

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marthab

Civil/Environmental
Nov 19, 2002
24
A client installed roof trusses @ 24" oc, but he skiped 2 trusses. So now he has 2 trusses spaced @ 48" oc The inspector won't accept that. The span is 28' and the roof pitch is 7/12. The roof is already installed.
I was thinking of installing rafters and a tie beam, which will be SYP spliced because of the length. What is the best way to splice and is there a recommended length
Any other suggestions?

Thank you
 
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The lenght (~16.2' plus overhang) should be avaiable.

The Rafter lap splice, when used to allow for shorter members, should be about 4 feet in length and both members face-nailed together with 2-16d common nails at 16 inches on center both sides. (Face-nailed) 3½" x 0.162" (16d common)

Use collor beam (1x6) in the upper 1/3
 
The axial forces should be low enough to repair the truss with the increased 48" loading.
The truss manufacturer should be able to provide a repair.
Even a site-built truss to match existing might be cost effective.
 
Do not recommend using 48" O.C. without more study. The decking may not be rated to span 48". much sagging would result!
 
When you say the inspector won't accept it, neither should you!

Tell your client he's nuts. Rip off the roof and put the trusses in at 24-inch centers, or have new trusses built in place as ctruax suggests. Keep a written record of the incident and make sure the building inspector is kept informed. And make sure the builder knows you are talking to the inspector.

Why'd he skip the trusses anyway?
 
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