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Old 02-23-2009, 09:43 PM   #1
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Header span?


I have two openings that I need headers in:
10ft opening none bearing. Can I use (2) 2x8
5ft load bearing, one story ranch. 2 x 8 also?
Please answer asap. Thanks

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Old 02-23-2009, 09:58 PM   #2
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Header span?


There are span tables for this you can look up, but here is an old standby that is pretty much on the safe side.

A traditional rule of thumb often used to size headers is the "inch per foot" rule which will provide adequate strength in most cases with spans up to eight feet. For headers in single story dwellings supporting no point loads such as posts or beams, provide one inch of header depth for every foot of header length, min. 4 x 4.


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Old 02-24-2009, 05:50 AM   #3
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Header span?


Keep in mind that much more must be considered. What and where is the roof load. Best not to be guessing on this. Lumber yards can give this info since they have engineers to determine beam sizes. Ask for the correct laminated beam and they can tell you that a 2X10 can be used
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