I beams are high strength long span structural timber beams which are used for residential and commercial applications.
Long span timber beams.
Dimensional lumber deck beam span chart.
Calculating the span of a beam requires using various factors that you need to first determine for a structure where the beam is being used.
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The numbers in gray indicate the distance between the support posts.
They offer exceptional straightness uniform depth and dimensional stability.
As a result a cedar douglas fir or southern yellow pine long span beams offers less cost less complexity better flow and simpler safety management.
They are attractive interesting durable and strong.
When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
In many instances a strategically placed engineered long span timber beam can do the job just as well and looks so much better.
A double 2x12 beam can span 12 feet.
A 2 2x10 can span 10 feet and so on.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
The span of any wood beam depends on many factors such as type of wood weight of the load and overall size of the beam.