Reply by John Ormsby

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Posted on Wood Truss Detail

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John Ormsby

1283 posts in 3707 days

#1 posted 01-11-2013 01:32 AM

Like others have stated already, Never cut into a truss. Cut 4’ 3” long extensions and nail them to the sides of the trusses. Plumb cut the ends before install or afterwards. No big deal to do. i usually make sure there is plenty of strength on any extension tails being added to trusses. A 3 to 1 ratio seems to work very well. So, for a 1 foot tail multiplied by 3 and you have 4’ long pieces. Add a bit more for the small extra lumb cut and you can get by with a 4’ 3” board. An 8’ long 2×4 cut at the proper diagonal in the middle and then flipped will net you 2 extensions with no waste.

-- Oldworld, Fair Oaks, Ca

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