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Balsa Bridge

  1. Nov 22, 2009 #1
    I need to make a bridge using Balsa Wood, but I can't decide whether to use the Howe or Pratt Truss.

    Requirements
    maximum mass of 25 grams
    maximum test load will be 15kg
    must allow a 5.0 (∼2”) cm cube to pass along the roadway without touching
    the structure
    must be an opening at the center of the roadway of at least 1 cm x 1 cm. This will
    allow the loading block bolt to pass through the roadway.

    Any thoughts?
     
  2. jcsd
  3. Nov 22, 2009 #2
    try to draw in a sheet ,or make a design in autocad for best construction
     

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