The Forestry Forum is sponsored in part by:

AVAILABLE


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.


Sawmill & Woodlot Magazine



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

BRUTE FORCE Authorized Dealer

Woodshax Outdoor Vending Solutions

FARMA


Council Tool

Baker Products

ECHO-Bearcat



Author Topic: Solved: Tulip Poplar  (Read 8041 times)

0 Members and 1 Guest are viewing this topic.

Offline swampwhiteoak

  • Senior Member
  • ****
  • Posts: 385
  • Gender: Male
    • Share Post
Re: Solved: Tulip Poplar
« Reply #20 on: June 11, 2002, 02:27:07 PM »
Honeybees are a pollinator, but they are european imports.  To my knowledge the native pollinator is unknown.

Offline bjorn

  • Full Member
  • **
  • Posts: 55
  • Location: Virginia
  • Gender: Male
  • I need to edit my profile!
    • Share Post
Re: Solved: Tulip Poplar
« Reply #21 on: June 13, 2002, 07:28:20 PM »
Don,
Thanks for the info.  I have also been out of the loop for a while.  Busy with "real job" and milling when I can.  I got the info I need on Tulop Poplar span tables from a friend.  ANd yes, this is an Ag use building, thats what my permit says, and that's all it will be!  Amazing how difficult it is to use non-graded lumber without jumping through hoops like this!  Even if the quality is better than any of the crap you have to pay good money for.

Offline Don P

  • Senior Member x2
  • *****
  • Posts: 4935
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: Solved: Tulip Poplar
« Reply #22 on: June 28, 2002, 02:13:47 PM »
I've been typing this up while out on site-offline...I see bjorn already found it but figured it might be worthwhile info for someone in the future. The book lists spans based on Fb and E and then goes on to give those values for quite a few species...a real good table to get hold of for those who might need something other than run of the (Canadian :D) mill info.

These are the design values for joists and rafters from the "92 CABO codebook NC Edition.

Yellow-Poplar (surfaced dry or surfaced green)

Select Structural 2x4 Fb 1700  Modulus of elasticity 1,500,000
No 1                              1450                                 1,500,000
No 2                              1200                                 1.3M
No 3                                675                                 1.2M
Stud                                675                                 1.2

Construction                    875                                  1.2
Standard                         500                                  1.2
Utility                              225                                  1.2

Sel Str 2x5&wider           1500                                  1.5
No1&appearance            1250                                  1.5
No 2                              1050                                  1.3
No3                                 600                                  1.2
Stud                                600                                  1.2

Allowable spans for floor joists...here are some examples this is from the table for 40 lb live load/10 lb dead load, deflection 1/360 span
2x6..E=1.3...16" on center...9'1"   Fb=1090
                  24"                  7'11" Fb=1250
      E=1.4   16"                  9'4"   Fb=1150
                  24"                  8'2"   Fb=1310
      E=1.5   16"                  9'6"   Fb=1200
                  24"                  8'4"   Fb=1380

2x8..E=1.3...16"                 12'0"  Fb=1090
                   24"                10'6"        1250
      E=1.4    16"                12'3"        1150
                   24"                10'9"        1310
      E=1.5    16"                12'7"        1200
                   24"                11'0"        1380  

2x10..E=1.3...16"               15'3"         1090
                    24"               13'4"         1250
        E=1.4   16"               15'8"         1150
                    24"               13'8"         1310
        E=1.5   16"               16'0"         1200
                    24"               14'0"         1380
     
2x12..E=1.3...16"               18'7"         1090
                    24"               16'3"         1250
        E=1.4   16"               19'1"         1150
                    24"               16'8"         1310
        E=1.5   16"               19'6"         1200
                    24"               17'0"         1380

Rafters, allowable span for low or high slope 15lb dead, 30 lbs per square foot live load supporting gypsum ceiling deflection limited to 1/240 span (sorry but the only other choice was supporting plaster) Notice extreme fiber stress in bending rather than stiffness is the main factor in these tables
2x6...Fb=1000...16"           9'2"       E=.67
                       24"           7'6"           .54
       Fb=1200...16"           10'0"          .88
                       24"           8'2"           .72
       Fb=1400   16"           10'10"       1.10
                       24"           8'10"          .90

2x8   Fb=1000   16"          12'1"           .67
                       24"          9'10"           .54
       Fb=1200   16"          13'3"           .88
                       24"          10'10"         .72
       Fb=1400   16"          14'4"         1.10
                       24"          11'8"          .90

2x10  Fb=1000   16"         15'5"          .67
                        24"         12'7"          .54
        Fb=1200   16"         16'11"        .88
                        24"         13'9"         .72
        Fb=1400   16"         18'3"        1.10
                        24"         14'11"        .90

2x12  Fb=1000   16"         18'9"          .67
                        24"         15'4"          .54
        Fb=1200   16"         20'6"          .88
                        24"         16'9"         .72
        Fb=1400   16"         22'2"         1.10
                        24"        18'1"           .90


Offline bjorn

  • Full Member
  • **
  • Posts: 55
  • Location: Virginia
  • Gender: Male
  • I need to edit my profile!
    • Share Post
Re: Solved: Tulip Poplar
« Reply #23 on: July 01, 2002, 07:26:15 PM »
Don,

That's all very helpful information.  I appreciate the effort.  This information does not seem to be readily available on the internet.  

Bjorn

Offline Jeff

  • Fearless Leader
  • Administrator
  • *****
  • Posts: 46980
  • Age: 57
  • Location: Harrison MI
  • Gender: Male
  • Proverbs 13:20
    • Share Post
    • THEE Forestry Forum
Re: Solved: Tulip Poplar
« Reply #24 on: July 02, 2002, 12:50:46 PM »
It is now.  :)
Just call me the midget doctor.
Forestry Forum Founder and Chief Bottle Washer.

Commercial circle sawmill sawyer in a past life.

Offline Sawyerfortyish

  • Senior Member x2
  • *****
  • Posts: 1512
  • Age: 56
  • Location: Stillwater N.J.
  • Gender: Male
  • Bigger they are the more mess they make
    • Share Post
Re: Solved: Tulip Poplar
« Reply #25 on: July 28, 2002, 06:05:09 PM »
Better late than never I guess. ::)Im in north jersey and we got lots of big poplar I cut one a year ago two ledges farther than I could get the skidder to  dropped it towards the skidder  no problem at 96' it was still 14" on the little end and I had 75' of cable. It was all the old 230 timberjack wanted to do to move it with the winch :o had to cut it in 3 sections to get it out. I sawed another on the mill that made the rear wheels on my payloader come off the ground  ???an 8' log I got almost 700' of lumber out of! :)The poplar here grows big and tall :D ;)

Offline Mitchell

  • member
  • *
  • Posts: 4
  • I'm new!
    • Share Post
Re: Solved: Tulip Poplar
« Reply #26 on: October 20, 2018, 06:20:42 PM »
A name I've heard given to several trees, this is ours.
(Image hidden from quote, click to view.)
Don P'Im from southwest va and wanted to know if board and batten Poplar would be good for siding for cabin off the ground and on a foundation of block with plastic on ground inside the foundation of block to keep moisture down, built houses on foundations on other houses and worked very well.Been a carpenter for 30 years and wanted your opinion about board and batten for a cabin 16x24.might have to build other sections but anybody have a preference on boars width? Thinking 8" wide or 6" wide if I can

Offline Don P

  • Senior Member x2
  • *****
  • Posts: 4935
  • Location: Southwestern VA
  • Gender: Male
    • Share Post
    • Calculator Index
Re: Solved: Tulip Poplar
« Reply #27 on: October 20, 2018, 07:22:01 PM »
Hey Mitchell, you dug up an old thread I had forgotten about :). Whereabouts are you, I'm in Grayson County.
Poplar was the main clapboard siding wood here in the past, most I've measured seems to be 5/8x6" in that style. It would be fine for board and batten. I like ~10" wide with ~3" battens but the wider you go the more cupping gets to be an issue between sawing and hanging it. Board and board is another popular style, for 6 and 8", the 8" boards would be on the back layer spaced 4" apart by using small 4" x framing width and siding thickness blocks, then the 6" would go on the outer layer overlapping the 8's by an inch on each side so in the finished product it all looks like 6". I usually borate poplar, powderpost beetles like the sapwood.

This is a pic of how I like to do the bottom of B&B, this is hemlock but could be poplar, I do like being further above grade! The bottom horizontal board has a 15 degree bevel ripped on its top edge and the boards have a 15* on their bottoms then the battens extend to the bottom of that horizontal board. This blocks the critter crack and helps shed any water that tries to creep into that joint.


  

To round out more on this thread about big poplars, which with the Chestnuts gone it is now the largest tree in the eastern forest, Most of this barn is poplar logs 20-30' long, the top plate beams are 60' long 12x12's 




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
Tulip Poplar

Started by Farmerjw on Sawmills and Milling

10 Replies
1388 Views
Last post February 22, 2015, 10:59:32 PM
by beenthere
xx
Tulip Poplar

Started by Hale87 on Forestry and Logging

7 Replies
839 Views
Last post May 03, 2014, 06:20:44 PM
by Hale87
xx
tulip poplar value

Started by mountaineer on General Board

13 Replies
15500 Views
Last post June 16, 2008, 11:27:18 PM
by WDH
xx
Just a small Tulip Poplar log...

Started by Joanie on Sawmills and Milling

28 Replies
3109 Views
Last post August 25, 2012, 09:18:12 PM
by WDH
 


Powered by EzPortal