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Re: Strongbacks: External and Internal
By:Shawn B
Date: 9/28/2000, 2:38 pm
In Response To: Strongbacks: External and Internal *Pic* (Joe Greenley)

Hi Joe,

I really appreciate your comparison between the two models. I agree with all of your comments except that the Ext is significantly stronger--it has twice as much plywood, so about twice as much strength.

>11. Strength: Ext - Very strong, Int - Moderate
> External has significantly more strength

Stiffness, though, I agree is significantly more. With twice as much plywood, but 4.5 times more cross-sectional area. 2.25x more stiffness in the y-plane and 9x more stiffness in the x-plane. (As depth doubles, stiffness squares).

Thanks for adding a quantitative element to a discussion that was, until now, pretty subjective!

Shawn

Messages In This Thread

Strongbacks: External and Internal *Pic*
Joe Greenley -- 9/26/2000, 10:17 pm
Re: Strongbacks: External and Internal
Shawn B -- 9/28/2000, 2:38 pm
Re: Strongbacks: External and Internal
Dave Kreiton -- 9/28/2000, 8:09 am
I vote internal
Dean Trexel -- 9/27/2000, 7:10 pm
Re: Strongbacks: External and Internal *Pic*
mike allen ---> -- 9/27/2000, 3:34 pm
Strongbacks: Building Constraint Factors
mike allen ---> -- 9/29/2000, 11:51 am
Re: Strongbacks: Building Constraint Factors
Bill Price -- 9/29/2000, 1:29 pm
Re: Strongbacks: Building Constraint Factors
Nick Schade - Guillemot Kayaks -- 9/29/2000, 2:50 pm
Re: Strongbacks: Building Constraint Factors
Bill Price -- 9/29/2000, 4:43 pm
Re: Strongbacks: Building Constraint Factors
mike allen ---> -- 9/29/2000, 2:50 pm
Re: Strongbacks: Building Constraint Factors
Bill Price -- 9/29/2000, 5:11 pm
Re: Strongbacks: Building Constraint Factors
Rehd -- 9/29/2000, 8:38 pm
Re: Strongbacks: External and Internal
Spidey -- 9/27/2000, 5:53 pm
Re: Strongbacks: External and Internal
Shawn B -- 9/28/2000, 2:36 pm
Re: Strongbacks: External and Internal
mike allen ---> -- 9/28/2000, 6:49 pm
Re: Strongbacks: External and Internal
Brian Wegener -- 9/27/2000, 10:16 am
Re: Strongbacks: External and Internal *Pic*
Joe Greenley -- 9/27/2000, 11:56 am
Stiffer is better
Tom Preska -- 9/27/2000, 7:35 am
Re: Strongbacks: External and Internal
Kent LeBoutillier -- 9/27/2000, 6:06 am
Re: Strongbacks: External and Internal
Don Beale -- 9/27/2000, 1:33 am
Re: Strongbacks: External and Internal
Spidey -- 9/26/2000, 11:01 pm