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StructuralEng
StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 7322
Experience:  Structural Engineer
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Will 6x8 beam span 10 ft to support 18' rafters

Customer Question

Will 6x8 beam span 10 ft to support 18' rafters
Submitted: 2 years ago.
Category: Structural Engineering
Expert:  StructuralEng replied 2 years ago.

Hello. How are you doing?

Expert:  StructuralEng replied 2 years ago.

Will the rafters be on side or both sides? What is the city and state so I can look at snow loading?

Customer: replied 2 years ago.
The rafters will over hang the beam 12", Marion County, Oregon
Expert:  StructuralEng replied 2 years ago.

A 6x8 is overstressed in bending and just barely works for deflection.

Expert:  StructuralEng replied 2 years ago.

A triple 2x10 is more appropriate supporting a roof only. If it's supporting an attic, too, then a triple 2x12.. Southern pine no. 2.