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walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2514
Experience:  Over 30 years of Structural Engineering experience.
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I have approved plans for a small (24'x29') building at my

Customer Question

I have approved plans for a small (24'x29') building at my home that will house some heavy objects like workout equipment and metal sculptures and a few people. The approved plans call for 2x10x12' lumber floor joists resting at the center of the 24' dimension on footing-supported 4x12 beams with spans less than 10 feet. To maximize the flatness of the final floor and to overbuild its load-carrying capacity, I would now like to substitute wood I-joists for the approved lumber joists and beams. But I don't know how to size the I-joists so that their performance is equal to or greater than that of the approved lumber. Weyerhaeuser publishes performance values for their Trus Joist products, but I don't understand the values and have no idea what the equivalent values are for the lumber. Is there a simple approach this non-engineer can take to select appropriate I-joists for my building? (Equivalent dimensions of I-joists to lumber?)
Submitted: 11 months ago.
Category: Structural Engineering
Customer: replied 11 months ago.
Expert:  walkereng replied 11 months ago.

Can you draw a rough sketch and share it with me? There is a button on the Chat Window that lets you attach files.

Customer: replied 11 months ago.
I'll try to send you plans. See small scale floor framing plan in upper left corner of second page.
Customer: replied 11 months ago.
Let me know if you get these.
Customer: replied 11 months ago.
Sorry, looks like I unintentionally sent them in triplicate.
Customer: replied 11 months ago.
I haven't heard further from you, so thought I should let you know that I think I have enough of my answer from elsewhere to proceed. Thanks anyway.--PJ
Expert:  walkereng replied 11 months ago.

Sorry for the delay, I was traveling this weekend.

Just ignore any future e-mails the system automatically sends you about Rating the Answer.

Good Luck with your project!

Customer: replied 11 months ago.
No problem. Thanks for being willing to help me. I'm sure I'll be back for more help.--PJ
Expert:  walkereng replied 11 months ago.

Sounds good

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