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Old 02-06-2007, 09:16 AM   #1
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18' Span


I have to span an opening of 18' and plan on using an LVL. I would like it exceed a 60 lb live load rating. Could anyone advise me as to what size lam will be needed.

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Old 02-06-2007, 07:16 PM   #2
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18' Span


I would recommend that you consult a salesrep for laminated beams, which are engineered for dead load more so than live load.

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Old 02-06-2007, 09:56 PM   #3
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18' Span


Get this specked from the manufacturer, it is not something for a "general rule of thumb". Your lumber yard can get the specific recommendation from the manufacturer who is supplying him. Also ask about the amount of deflection you will have on your span. If the beam is buried in a wall or ceiling it is usually not a problem, but if the bottom edge will be an outside corner with a drywall bead, the deflection will be noticeable when the bead is applied.
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