The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems

Chainsawr, The Worlds Largest Inventory of Chainsaw Parts

Smith Sawmill Service



Author Topic: Wood Species strength...  (Read 479 times)

0 Members and 1 Guest are viewing this topic.

Offline ljohnsaw

  • Senior Member x2
  • *****
  • Posts: 4769
  • Age: 61
  • Location: Northern California
  • Gender: Male
  • Happily retired... Working harder than ever!
    • Share Post
Wood Species strength...
« on: May 14, 2020, 11:26:15 AM »
Probably a question for @Don P  or @Wood Doctor .  My plans specify Ponderosa pine but I have a potential lead on some Sugar Pine.  In the toolbox, there is ponderosa but no sugar.  I thought I saw sugar in there but either the list changed or I'm mistaken (more likely).  Is sugar more or less strong then ponderosa and by how much?  I'm so oversized I don't really think it will be a problem but just checking to be sure.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

Offline Don P

  • Senior Member x2
  • *****
  • Posts: 8365
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: Wood Species strength...
« Reply #1 on: May 14, 2020, 12:12:54 PM »
Slightly weaker in bending, the same in stiffness, ever so slightly lower shear. It falls into the "western woods" group in the calcs.
If that group is not there, let me know which calc your on and I'll catch it on my next cool off break.
The future is a foreign country, they will do things differently there - Simon Winchester

Offline ljohnsaw

  • Senior Member x2
  • *****
  • Posts: 4769
  • Age: 61
  • Location: Northern California
  • Gender: Male
  • Happily retired... Working harder than ever!
    • Share Post
Re: Wood Species strength...
« Reply #2 on: May 14, 2020, 07:02:35 PM »
Thanks, Don.  IIRC, I designed my cabin around the use of #2 Ponderosa but (not being a lumber grader), I'm cutting #1 or even select.  Even with that, I oversized a bit for aesthetics.  So, looking at the rating of Sugar (Western Woods), leaning more toward the #1, I am still about 150% of my design requirements.  I did read somewhere a while back that the sugar pine was something like the third most used wood behind Doug Fir and Ponderosa (out here).  So, I think I'm still good.

Also, a request?  The wood design specs that you find under the manual beam calc, it would be nice if that was up on the "main menu" area.  I always have to dig down into a few of the calcs to find it.  I think its only available there.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

Offline Don P

  • Senior Member x2
  • *****
  • Posts: 8365
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: Wood Species strength...
« Reply #3 on: May 14, 2020, 10:28:14 PM »
I put that link at the top of the beam and column calcs list.

I added another link that is dead right now for species combinations, this made me realize that should be available, ok slow learner. Looking at the list, that will take a little while.

All of that is also in the "Supplement to the NDS" on the awc.org site.

On using #2 design values, the TF Standard, which is apparently forever in development, said something to the effect that if the timbers were not graded by a certified third party grader that you use no higher than #2 design values. That and typical framing convention is where that comes from. If you're sure you're in good material then use more realistic numbers. Where it goes astray is when someone is making the numbers fit the need they have. That isn't going to change the timber.
The future is a foreign country, they will do things differently there - Simon Winchester

Offline Don P

  • Senior Member x2
  • *****
  • Posts: 8365
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: Wood Species strength...
« Reply #4 on: May 17, 2020, 07:51:01 PM »
OK, the species combinations list should be live now, give it a whirl and let me know if you see problems or mistakes  :)
https://forestryforum.com/members/donp/SpeciesGroups.htm
The future is a foreign country, they will do things differently there - Simon Winchester

Offline ljohnsaw

  • Senior Member x2
  • *****
  • Posts: 4769
  • Age: 61
  • Location: Northern California
  • Gender: Male
  • Happily retired... Working harder than ever!
    • Share Post
Re: Wood Species strength...
« Reply #5 on: May 17, 2020, 08:36:22 PM »
Looks good to me!  Thanks.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

xx
Strength of Wood

Started by wesdor on Timber Framing/Log construction

6 Replies
2270 Views
Last post December 17, 2009, 08:09:39 AM
by jim king
xx
What species of wood

Started by Ed D on Tree, Plant and Wood I.D.

13 Replies
809 Views
Last post January 16, 2021, 09:31:44 AM
by kantuckid
xx
Help Needed Re:Wood Species

Started by campy on Sawmills and Milling

30 Replies
5090 Views
Last post October 23, 2010, 06:30:28 PM
by campy
xx
Wood Species for TF Porch

Started by snowmountain on Timber Framing/Log construction

3 Replies
340 Views
Last post March 29, 2021, 05:31:51 PM
by Don P
 


Powered by EzPortal