Building Homes or Extensions/Truss construction

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Expert: - 8/6/2008


Question
Can I span 18 feet with 2 by 6 truss laminated with 1/2 inch plywood, same for top of truss (rafter boards) without having the vertical and angle braces (from bottom 2 by 6's to top rafters).  Length of room is 22 feet.  Open ceiling.
Thanks!

Answer
Curtis, are you asking me if you can have a simple triangle with no intermediate truss bracing?  Simple answer - NO.  It is the interaction between the top and bottom chords that  give a truss its ability to funciton..  A one piece ceiling joist capable of spanning 22 feet with no attic weight and no ceiling weight would be larger than a 2x6, I think it will sag out over time substantially.

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Dan Griffin

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I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

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I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

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My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

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I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

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