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StructuralEng
StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 6687
Experience:  Structural Engineer
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I am using a beam made from a 1/2" piece of plywood

Customer Question

I am using a beam made from a 1/2" piece of plywood sandwiched between two 2 x 12's @ 15' in length in place of a wall that is load bearing. Is that length safe for this size beam?
Submitted: 9 months ago.
Category: Structural Engineering
Expert:  StructuralEng replied 9 months ago.

Hello

Expert:  StructuralEng replied 9 months ago.

Is it supporting one floor or two? What about an attic? What is the joist length on each side of the beam?

Customer: replied 9 months ago.
It is supporting only the attic space it's a 1 story house and I'm opening up the wall from kitchen to dining there is 10' span on one side 12' on the other
Customer: replied 9 months ago.
Didn't mean to send call info
Expert:  StructuralEng replied 9 months ago.

It looks like the payment failed. Do you want a phone call?

Expert:  StructuralEng replied 9 months ago.

Ok. Let me run the numbers on that.

Expert:  StructuralEng replied 9 months ago.

That beam is undersized

Customer: replied 9 months ago.
By how much ? I've quad 2x4 under each end and the span is going to actually be 13' 5" sorry I've never used this site and was giving an about length
Expert:  StructuralEng replied 9 months ago.

It will work at 13'-5" only if it's southern pine no. 2. How much it's over otherwise depends on the species and grade. For something like Doug-fir no. 2, it's over by approximately 25%.

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