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walkereng
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2632
Experience:  Over 30 years of Structural Engineering experience.
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Can I use 2x8 roof rafters. Span = 9' spacing = 16" o.c. Location

Customer Question

Can I use 2x8 roof rafters. Span = 9' spacing = 16" o.c. Location = Black hills, South dakota
Submitted: 9 months ago.
Category: Structural Engineering
Expert:  walkereng replied 9 months ago.
I can help
Expert:  walkereng replied 9 months ago.
I have a couple of questions:1. What type of roofing do you have?2. Do you know what species and grade of 2x8's you will be able to purchase?
Expert:  walkereng replied 9 months ago.
Also, what specific city are you near?
Customer: replied 9 months ago.
Will be using metal roofing, 2/12 pitch, I am in Spearfish, SD , we will use what grade you recommend
Customer: replied 9 months ago.
#1 structural hem fir on the grade
Expert:  walkereng replied 9 months ago.
Before we get started I’d like to point out that a Professional Engineer’s standard of care typically includes a site visit to assess field conditions and get an overall understanding of the structure. This can obviously not be accomplished through the internet. The information provided here is meant for planning purposes only (general sizing and budgeting) and is based on the information provided by you. All loading cases considered are for vertical loads only, no lateral analysis has been completed. The information should be verified by a professional engineer who can visit the site to ensure that potentially important information has not been overlooked or omitted. 2x8 Hem Fir #1 grade will work well. You could also use 2x6 Hem Fir #1 grade with your configuration. If you feel you have received a satisfactory answer to your question, click the Rating button that is appropriate. Experts are credited for each adequately Rated answer they provide. If you have additional questions, please let me know. Thanks
Expert:  StructuralEng replied 9 months ago.
Hello
Expert:  StructuralEng replied 9 months ago.
I can help.
Customer: replied 9 months ago.
got my answer, thanks
Expert:  StructuralEng replied 9 months ago.
Sorry. I couldn't see it was already answered.
Expert:  walkereng replied 9 months ago.
If you feel you have received a satisfactory answer to your question, click the Rating button that is appropriate. Experts are credited for each adequately Rated answer they provide. If you have additional questions, please let me know. Thanks

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