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Patrick, Construction Project Manager
Category: Home Improvement
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Experience:  30 years commercial construction and 23 years house remodeling projects
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what is the maximum span allowed for 2x8s on 16 center same

Customer Question

what is the maximum span allowed for 2x8's on 16" center? same question for 2x10's.
Submitted: 3 years ago.
Category: Home Improvement
Expert:  Patrick replied 3 years ago.
For construction grade lumber used for floor joists the 2 x 8 span at 16" OC is 12-9" and the 2 x 10 at 16" OC is 15'-7" without a ceiling below. If there is a ceiling below these spans decrease. Also, to be more specific there are deviations from this for type of lumber, specie, grade, application as floor or ceiling, plus variations for live load and dead load. There are numerous charts and span calculators available on the web that you can use for your specific case. Remember to install bridging between the members to stiffen the assembly. Good luck. If this has proved helpful please remember to it ACCEPT, otherwise I do not receive credit. Thank you.
Patrick, Construction Project Manager
Category: Home Improvement
Satisfied Customers: 2429
Experience: 30 years commercial construction and 23 years house remodeling projects
Patrick and 2 other Home Improvement Specialists are ready to help you
Customer: replied 3 years ago.
how far can 2x8's @ 16" oc canto -lever beyond a triple 2x10 beam?
Expert:  Patrick replied 3 years ago.
As a general rule it should not exceed 24 inches. Again, if you have heavier loads this should be reduced. Your local building code and amendments may be different than this and should be verified. Good luck. If this has proved helpful please remember to it ACCEPT, otherwise I do not receive credit. Thank you.

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