Wood Bridge Contest

Wood Bridge Contest (800 points)

1. Bridge Research Worksheet (100 points)
2. Drawing bridge full scale on graph paper (100 points)
3. Bridge Construction (100 points each side, 400 points total)
* -2 points for every 1/4" outside the specified bridge size requirements
4. Bridge Testing (200 points) Testing Rubric Below.

Bridge Requirements
Length: Must be between 8" and 11" long
Height: Must be between 4" and 8" tall
Width: Must be between 2" and 4" wide

*No parts of your bridge may be solid. (i.e. a finger must be able to poke through any side of your bridge multiple times).
* -2 % points for every 1/4" outside the specified bridge size requirements

Bridge Testing Grading Rubric
A = 40-50 pounds held
B = 30-39.9 pounds held
C = 20-29.9 pounds held
D = 10-19.9 pounds held (i.e. 10 pounds held = 60 D, 19 pounds held = 69 D)
F = 9.99 pounds held or less

50 lbs. held = 100 A. For each additional pound held, one point extra credit will be awarded.

Extra Credit Opportunities:
For each additional pound held over 50 pounds, one point extra credit will be awarded.