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

FARMA


Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems






Author Topic: I Joists for solar kiln floor?  (Read 358 times)

0 Members and 1 Guest are viewing this topic.

Offline Brad_bb

  • Senior Member x2
  • *****
  • Posts: 3992
  • Age: 48
  • Location: Joliet, IL and Indy
  • Gender: Male
    • Share Post
I Joists for solar kiln floor?
« on: October 27, 2019, 11:23:16 PM »
I'm planning to build 2 solar kilns.  Found a good deal on some lightly used TJI's.  Will they fall apart more quickly?  I'm planning to put the kilns on concrete or gravel.  Trying to save some money, but if the osb center section will not hold up outdoors as well as regular construction lumber.... then I'll nix the idea.  They would be about 30% of the cost of new 2x8's.  I'd have to buy construction lumber as I only have Ash hardwood logs.  Or should I go for Ash 2x8's even though it will be heavier?
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline barbender

  • Senior Member x2
  • *****
  • Posts: 6776
  • Age: 44
  • Location: Deer River MN
  • Gender: Male
    • Share Post
Re: I Joists for solar kiln floor?
« Reply #1 on: October 28, 2019, 12:59:24 AM »
They usually have a better glue in the I joists than regular osb, I think. I still wouldn't want them somewhere that they would be subjected to a lot of moisture/humidity. 
Too many irons in the fire

Online Don P

  • Senior Member x2
  • *****
  • Posts: 6202
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: I Joists for solar kiln floor?
« Reply #2 on: October 28, 2019, 07:21:43 AM »
I wouldn't do it Brad, too much possibility of moisture. Same glue specs in the web IIRC. I'd opt for the ash but I would SOAK it in borate, then dry and use. My partner just called, we need to pick up more roof coating for our DH under construction. It's covering about a sheet and a half per gallon.
A laborer works with his hands
A craftsman uses his brain and his hands
An artist uses his brain, his hands, and his heart

Offline WDH

  • Forester
  • Administrator
  • *****
  • Posts: 29497
  • Age: 66
  • Location: Perry, GA
  • Gender: Male
  • April 1998 - August 2008
    • Share Post
    • hamsleyhardwood.com
Re: I Joists for solar kiln floor?
« Reply #3 on: October 28, 2019, 07:39:18 AM »
I laid some treated 2x4's flat on the foundation 16" on centers and built the joist floor for my DH kiln on top of that.  Treated with disodium octaborate tetrahydrate (DOT) and kept dry, the ash would outlive you. 
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline GeneWengert-WoodDoc

  • Senior Member x2
  • *****
  • Posts: 2763
  • Location: Bishop, GA
  • Gender: Male
  • Author of "Sawing Hardwood Lumber"
    • Share Post
    • Book on Sawing hardwood Lumber
Re: I Joists for solar kiln floor?
« Reply #4 on: October 28, 2019, 04:02:47 PM »
It only takes a few settings for these products to loose integrity.  So, it would be prudent to use something else...PT SYP is ideal, except that the kiln will likely not last 35 years, so this would be overkill.
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline Brad_bb

  • Senior Member x2
  • *****
  • Posts: 3992
  • Age: 48
  • Location: Joliet, IL and Indy
  • Gender: Male
    • Share Post
Re: I Joists for solar kiln floor?
« Reply #5 on: October 29, 2019, 09:01:22 PM »
Ok, I'll nix the I joists.  With the 2x8 joists though, I'm thinking some blocking in the floor would help stiffen it up and share floorload? 

@GeneWengert-WoodDoc , in the virgina tech plans, it lists six 4x4 x8' treated pieces.  I can't see what these are for?

Additionally, I'm considering making a timber frame for the bottom that I can get my forks under to lift and move it if needed.  Anyone else do this?  If so, how did it work out?  Not sure how much the kiln will weigh empty?
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline GeneWengert-WoodDoc

  • Senior Member x2
  • *****
  • Posts: 2763
  • Location: Bishop, GA
  • Gender: Male
  • Author of "Sawing Hardwood Lumber"
    • Share Post
    • Book on Sawing hardwood Lumber
Re: I Joists for solar kiln floor?
« Reply #6 on: October 30, 2019, 07:11:35 AM »
I am not sure why Brian used 4x4.  In most cases, treated 2x8 16 to 24 oc will be more than adequate, especially if they are well supported with blocking above the ground or concrete slab.  Air flow underneath will keep the floor dry, although pressure treated plywood for the floor might be a reasonable idea.
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline Brad_bb

  • Senior Member x2
  • *****
  • Posts: 3992
  • Age: 48
  • Location: Joliet, IL and Indy
  • Gender: Male
    • Share Post
Re: I Joists for solar kiln floor?
« Reply #7 on: October 31, 2019, 12:29:44 PM »
2x8 treated floor joists are listed and shown on the floor deck plan, but in the materials list there are six treated 4x4 x 8'  listed.  They don't appear in any of the wall or floor design pictures, so I'm not sure what they are intended for? Ok, I just looked at the plans online and could barely make out in one of the color photos, it looks like the 4x4's are used on the very bottom under the floor joists to either keep the joists off the ground or to be able to move the kiln with a forklift? It looks like they used 8 of them through and not 6.  @GeneWengert-WoodDoc



 
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!


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
Rough sawn green doug fir for exposed ceiling joists and floor joists

Started by Sedgehammer on Timber Framing/Log construction

18 Replies
1426 Views
Last post February 14, 2019, 12:14:18 AM
by Sedgehammer
xx
Solar Kiln Floor

Started by GF on Drying and Processing

1 Replies
1111 Views
Last post June 16, 2004, 12:04:22 PM
by WoodChucker
xx
Beech floor joists

Started by arj on The Wisconsin Barn Preservation Program

19 Replies
7795 Views
Last post May 01, 2009, 02:21:06 PM
by Raphael
xx
Ripping Floor Joists

Started by jander3 on Chainsaws

6 Replies
2436 Views
Last post April 01, 2009, 04:40:32 PM
by Al_Smith
 


Powered by EzPortal