Team Twin TrioTeam Twin Trio

Team Members:Team Members:

Sharon VoellerSharon Voeller

Steven VoellerSteven Voeller

Monica BollingerMonica Bollinger--PritchettPritchett

MonicaMonicaThe OrganizerThe Organizer

StevenStevenThe EngineerThe Engineer

SharonSharonThe StevenThe Steven--keepkeep--inin--linerliner

Rugby, ND Rugby, ND Geographical Center Geographical Center of North Americaof North America

Drawbridge Near Drawbridge Near Cartwright, NDCartwright, ND

Basic Bridge DesignsBasic Bridge Designs

Strength to Strength to Weight Ratio Weight Ratio =1498.3=1498.3

Strength to Strength to Weight Ratio Weight Ratio =1211.3=1211.3

Bridge DesignsBridge Designs

Strength to Weight Ratio = 1443.1Strength to Weight Ratio = 1443.1

Bridge DesignsBridge Designs

Strength to Weight Ratio = 328.7Strength to Weight Ratio = 328.7

ProgressProgress

OOPS!OOPS!

SafetySafety

Eye Protection GogglesEye Protection Goggles

General Precautions While General Precautions While Handling Razor BladesHandling Razor Blades

ToolsTools

CalculatorCalculator

ComputerComputer

Cordless DrillCordless Drill

Disposable PipettesDisposable Pipettes

Modeling KnifeModeling Knife

Razor BladeRazor Blade

Rotary DrillRotary Drill

RulerRuler

SandpaperSandpaper

SourcesSources

ModelSmart v 1.62ModelSmart v 1.62

www.midrivers.com/~fairview/bridges.htmlwww.midrivers.com/~fairview/bridges.html

““West Point Bridge Designer 2003.West Point Bridge Designer 2003.””http://bridgecontest.usma.edu/downld20http://bridgecontest.usma.edu/downld2003.htm03.htm

““United States Department of United States Department of TransportationTransportation--Bridge Technology.Bridge Technology.””www.dot.gov/citizen_services/highways_www.dot.gov/citizen_services/highways_bridges/bridges/index.htmlindex.html

Final DrawbridgeFinal Drawbridge