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Author Topic: Rafter span table for eastern white pine  (Read 635 times)

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Offline bill m

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Rafter span table for eastern white pine
« on: December 02, 2017, 03:50:14 PM »
I am getting ready to start framing another addition to my sugar house and would like to use white pine for the rafters. I can't find span tables for white pine so can anyone here help? The rafters will be full dimension 2X6 spaced 24 inches on center. The span is 7 feet with a 12 - 12 pitch, 1 inch pine boards with metal roofing. Will these be strong enough?
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Offline Don P

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Offline bill m

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Re: Rafter span table for eastern white pine
« Reply #2 on: December 02, 2017, 04:29:56 PM »
Tried it, says address not valid.
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Offline Don P

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Re: Rafter span table for eastern white pine
« Reply #3 on: December 02, 2017, 04:35:56 PM »
forum software must be kicking it out  ???
 type in awc.org and you'll get to the main page, I think right column will say "calculators" or software, hit that and then the span calc is their first one.

Offline bill m

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Re: Rafter span table for eastern white pine
« Reply #4 on: December 02, 2017, 04:44:52 PM »
Thanks Don. That's what I did and downloaded the charts. Not sure if I was reading it right but it looks like 2x6 pine will be ok.
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Offline drobertson

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Re: Rafter span table for eastern white pine
« Reply #5 on: December 02, 2017, 04:51:15 PM »
Not really sure of you all's snow load stuff that way,, but if 24" is a question,,then why not just go 16"?  it's over kill more than likely, but roofs that give way are bad too,,12-12, with a metal roof, that sounds like a good design to me, and on a short span, it should work, not sure of the knots you may be dealing with,  they seem to be the deal breaker even for SYP, very weak they can be at that tangent of the knot and wood,
only have a few chain saws I'm not suppose to use, but will at times, one dog Dolly, pretty good dog, just not sure what for yet,  working on getting the gardening back in order, and kinda thinking on maybe a small bbq bizz,  thinking about it,

Offline Jeff

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Re: Rafter span table for eastern white pine
« Reply #6 on: December 02, 2017, 05:23:37 PM »
I put the link in url tags and it made it work. I think the forum software has trouble justifying a link if it does not end in n extension. Just a guess
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Offline thecfarm

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Re: Rafter span table for eastern white pine
« Reply #7 on: December 02, 2017, 05:27:45 PM »
I still need to build a sugar shack.
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Offline Chuck White

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Re: Rafter span table for eastern white pine
« Reply #8 on: December 03, 2017, 07:02:22 AM »
That's about what our sugarhouse is, only it is 6-12 pitch!

are you putting felt paper on the roof boards, under the steel?

Could save a lot of dripping!
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Offline bill m

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Re: Rafter span table for eastern white pine
« Reply #9 on: December 03, 2017, 08:01:05 AM »
No felt, full ice and water shield.
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Offline Chuck White

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Re: Rafter span table for eastern white pine
« Reply #10 on: December 03, 2017, 08:37:48 PM »
Perfect!!!
~Chuck~
Retired USAF (1989), Retired School Bus Driver (2012), and now a Mobile Sawyer
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Basic mechanical skills are all that's required to maintain the Wood-Mizer.
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Offline 47sawdust

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Re: Rafter span table for eastern white pine
« Reply #11 on: December 09, 2017, 03:18:56 PM »
I've used Vermont white pine a lot for rafters,roof pitch from 3/12 to 5/12.Strapped with rough sawn 2x4 and covered with 26 gauge metal.Felt or Triflex between the metal and the strapping.If you are nervous just oversize your rafters or space closer.On my wife's garage I sawed 3x8's and spaced them 24''.It was overkill,but looks impressive.
I've never seen a rafter table for eastern pine,most folks wouldn't consider using it but if it is for your own use I'd do it,just use common sense.
Mick
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