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: Timber pavillion design question  (Read 2470 times)

0 Members and 1 Guest are viewing this topic.

Offline moose

  • member
  • *
  • Posts: 6
  • Location: Omaha,NE
  • Gender: Male
  • I'm new!
    • Share Post
Timber pavillion design question
« on: June 23, 2006, 11:25:22 PM »
Below is a model of a pavillion I plan to build for the back yard.  The image shows a few odd things such as a joint in the center of the collar ties which really isn't correct.

The frame is not large so I'm not too worried about the engineering part except for two issues.  The valley- to-corner post connection has become complicated, and the thrust from the hammerbeam and valley on the corner post requires a tieback.

The question:  Can someone point me to some information on how best to deal with corner thrust of two hammerbeams at a 90 degree angle.  Many thanks - Duane



Offline Jim_Rogers

  • Board Moderator
  • *****
  • Posts: 7776
  • Age: 69
  • Location: Georgetown, MA
  • Gender: Male
  • Keep your chisels sharp.
    • Share Post
    • jrsawmill.com
Re: Timber pavillion design question
« Reply #1 on: June 24, 2006, 07:52:01 AM »
An impressive first project....
Much more than a beginner one for sure.....
Did you check out the story "one for your favorites?"
Joe probably can help you with some of your issues....
Good luck with your project.....

Jim Rogers
Whatever you do, have fun doing it!
Woodmizer 1994 LT30HDG24 with 6' Bed Extension

Offline JoeyLowe

  • Senior Member
  • ****
  • Posts: 392
  • Location: Gilmer
  • Gender: Male
  • "In the German Tradition"
    • Share Post
Re: Timber pavillion design question
« Reply #2 on: June 24, 2006, 10:04:18 PM »
For the record, I'm not an engineer and I"m sure that this project could be accomplished with a lot of beam engineering.  However, (always a however), I would think that based strictly on your rendering, that this structure would probablly fail.  the top of your posts are awful busy.  Not much wood available for all that is going on.  How will you buttress your posts?  Are any structural connectors being used or will it all be traditional joinery?
--
Joey Lowe

"Working towards perfection has to be a part of anything one does.  You've got to put yourself into it." ... Sam Maloof (chairmaker)

Offline moose

  • member
  • *
  • Posts: 6
  • Location: Omaha,NE
  • Gender: Male
  • I'm new!
    • Share Post
Re: Timber pavillion design question
« Reply #3 on: June 25, 2006, 12:58:25 AM »
Thanks for your comments, I think I'll re-think this.  Back to the drawing board.

Duane

Offline Raphael

  • Senior Member x2
  • *****
  • Posts: 1117
  • Age: 59
  • Location: Warren, CT
  • Gender: Male
  • Willing and able to do a boring job.
    • Share Post
Re: Timber pavillion design question
« Reply #4 on: June 25, 2006, 03:31:50 AM »
Nothing like a nice simple relaxing project.  :D ;) :D

How about tying the posts with dragon beams to resist that thrust?
  You can drop the 'not split' collar tie so it is between the queen posts of the hammer beam and tie the rafter to the outer beam making it a rigid truss (also it's two less elements to attach to the post).  It should be pretty rigid as drawn (you're getting the weight well down on the post which is good) but I'm not sure how you will get all that joinery to work at the post top.
  You'll still have thrust from the valley to look at... possibly a long arched brace from the valley to low on the post combined with a tie between valleys (you'll decrease thrust but the posts will need a lot of spine and their bottoms need some serious anchoring) or it's dragon beams again (kill the thrust at or above the post tops).
  You could also jowl the posts along both wall planes to give yourself more joinery room.

I personally would be leary leaving any design that didn't totally kill thrust above the post tops unchecked by an engineer.
... he was middle aged,
and the truth hit him like a man with no parachute.
 --Godley & Creme

Stihl 066, MS 362 C-M & 24+ feet of Logosol M7 mill

Offline raycon

  • Senior Member
  • ****
  • Posts: 366
  • Location: Eastern CT
  • Gender: Male
    • Share Post
Re: Timber pavillion design question
« Reply #5 on: June 25, 2006, 08:02:31 PM »
Neat. Possibly have the corner post jowel shaped and 5 sided. Could add a brace to the valley rafter as well. Valley rafter would go on  first then the two principal rafters.
Lot of stuff..


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
Timber size calculator and timber frame design.

Started by Joe Vachon on Timber Framing/Log construction

1 Replies
5118 Views
Last post July 07, 2017, 10:25:46 PM
by Roger Nair
xx
German Timber Frame Design

Started by maineframer on Timber Framing/Log construction

7 Replies
4191 Views
Last post March 03, 2007, 07:01:48 PM
by Dave Shepard
xx
Jim's Timber Frame Design Services

Started by Jim_Rogers on Services

38 Replies
23803 Views
Last post August 12, 2020, 07:30:39 PM
by Dana Stanley
moved
MOVED: 24 x 36 Timber Frame Design - comments please

Started by Jim_Rogers on Timber Framing/Log construction

0 Replies
818 Views
Last post September 28, 2017, 09:15:33 AM
by Jim_Rogers
 


Powered by EzPortal