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Toms Daughter's Cool Bridge

Tom's daughter seems to have done another great catenary arch toothpick bridge. Tom wrote:
As my daughter tells the story, 
there was a single loud snap,
followed by the crash of weights 
hitting the floor under the test fixture. 
    It weighed in at 118 grams, spanned 
some 40+ cm, and held an amazing 
125 lbs !!  That rating acheived an 
efficiency just shy of 500, 
and earned an A+.  The design was
a winner in the class. 
    Thanks again for the advice.  Will
 send pictures when I get them loaded.
 - tom.

Another Cool Arch

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