STUDENT OUTREACH Popsicle Stick Bridge Competition September 22, 2014 Glenn Miyasato ASCE Hawaii Section PGF 2014
What is it? Annual competition between teams of middle school students Part of University of Hawaii Engineering Expo Teams provided with the following items: Popsicle Sticks Elmer’s Glue Rules (Design and Construction Criteria) The challenge: Build a bridge with the greatest strength to weight ratio Present the team’s design and construction process Hawaii Section PGF 2014
Our Goals Inspire students to pursue a career in civil engineering Promote teamwork, technical growth and communication skills Foster interaction between students/teachers and CE community Provide activity engaging the student chapter, YMF and section Hawaii Section PGF 2014
Competition Rules Up to four members per team Can enter only one bridge Must do a presentation More in rules handout > Hawaii Section PGF 2014
Bridge Building Rules - Materials 4½ by 3/8 by 1/12 inch popsicle sticks 3 - 4 oz. bottles of Elmer’s Glue-All Joints can only be glued Pinned and slotted joints are not allowed Total weight cannot exceed 1 pound 4 oz. Hawaii Section PGF 2014
Bridge Building Rules - Dimensions 2 ft min span Width: 4” to 5½” Height: 3½”to 5” No part of the bridge below deck level 3 by 3½ inch block must pass through Hawaii Section PGF 2014
Bridge Dimensions Sketch Hawaii Section PGF 2014
Testing Devices to Meet Specifications Hawaii Section PGF 2014
Annual Schedule Planning/Improvements: March through December Purchase Materials: August (back to school sales) Notify Teachers: September (fundraising) Mail out Materials: December Competition: March Hawaii Section PGF 2014
Competition Day Registration: 9: 00 a. m. (40 teams maximum) Presentations: 9: 15 a. m. – 11: 00 a. m. Load Testing: 9: 30 a. m. – 11: 30 a. m. Teams rotate through 5 station checks Only students allowed in presentation/load test areas Hawaii Section PGF 2014
Competition Area Hawaii Section PGF 2014
Station 1: Registration Hawaii Section PGF 2014
Station 2: Photo Hawaii Section PGF 2014
Station 3: Presentation Hawaii Section PGF 2014
The Presentation Team makes 5 -10 minute oral presentation prior to load test Presentation includes the following items: How was the bridge design (shape of truss) chosen What was the most difficult part of designing the bridge What was the most difficult part of building the bridge What is the expected behavior (which members in tension, compression) What they learned from the design and construction process What they learned from the competition 3 to 4 pairs of judges (preferably SEs) judge each team Judges ask questions and fill out score card with criteria Hawaii Section PGF 2014
Judges Scorecard Hawaii Section PGF 2014
Team Presentations Hawaii Section PGF 2014
Station 4: Dimension Check/Weigh-In Hawaii Section PGF 2014
Station 5: Load Test Bridges span to steel load test frames Previous Current Hawaii Section PGF 2014
Centering the Bridge Loading Bar Load applied with 2 inch wide steel bar Loading bar straddles the bridge centerline at deck level Bridge must be constructed to accommodate loading bar Hawaii Section PGF 2014
Loading Steel weights and sand are loaded into container by YMF and student chapter Hawaii Section Sand is loaded into container at a slow rate by Team PGF 2014
Fail! Bridge “fails” when load container touches ground Hawaii Section PGF 2014
Fail? Hawaii Section PGF 2014
Fail? Hawaii Section PGF 2014
Lean Hawaii Section PGF 2014
Fail! Hawaii Section PGF 2014
Results and Awards 1 st, 2 nd, and 3 rd place awards are given for Highest load carrying capacity to weight ratio Best Presentation 2014 Best Presentation Mililani Middle (A 3 D Bridge) Central Middle (Infinite) Molokai Middle (Rastafaris) Hawaii Section PGF 2014
2014 Load Test Results Hawaii Section PGF 2014
Budget Popsicle Bridge Building Contest $850. 00 New equipment, replacements and repairs $250. 00 Popsicle Sticks $260. 00 Elmer's Glue 40 teams Bridge checking tools; replacement signs (does not include safety glasses and load test frames) $270. 00 Copies of Rules $70. 00 Shipping Boxes $0. 00 Free from USPS Postage $0. 00 UH to cover costs Registration Materials $0. 00 Donated by Akinaka Certificate Paper and Ink $0. 00 Donated by KAI Hawaii Trophies $0. 00 UH to cover costs Delineators/Ribbon $0. 00 Donated by GP Roadway Solutions Hawaii Section PGF 2014
Highlights Creative presentations Real time posting of load test results on screen Team loading and recognition during load test Audience enthusiasm and excitement during load test Hawaii Section PGF 2014
Future Improvements Follow up with teacher/principals to fuel enthusiasm Notify teachers in a timely manner Encourage media publicity Visit schools to assist students/teachers with the project Review competition criteria for improvements Hawaii Section PGF 2014
Our Committee Jon Young, Outreach Chair (HAPI) Joni Tanimoto, Registration (Akinaka & Associates) Eric Tomishima, Load Test (Iwamoto & Associates) Mike Hunneman, Presentation (KAI Hawaii, Inc. ) Hawaii Section PGF 2014
Thank You Hawaii Section PGF 2014
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