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National Timber Bridge Design Competition - 2020

This project submission for the National Timber Bridge Design Competition showcases a college or university student chapter's bridge design concept. The aim was to optimize stiffness while minimizing the weight of the structure. The project includes an abstract, deflection table, materials list, bridge component details, and images of the finished bridge.

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National Timber Bridge Design Competition - 2020

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  1. National Timber Bridge Design Competition - 2020 College or University Name: Student Chapter (ASCE or FPS): Address: Website Address: Faculty Advisor: Email: Phone: Student Member in Charge of Project: Email: Phone:

  2. Hours Spent on This Project Students: Faculty: Cost of Materials Donated: Purchased:

  3. Abstract (Maximum 500 Word Narrative): Explain the bridge design concept and what was done to optimize stiffness wile attempting to minimize weight of the structure.

  4. 2. Deflection Table (Deflection – millimeters rounded to 2 decimal places) • Loading Increments • Bridge – As measured at midspan of the longitudinal beam receiving greatest loading. • Beam L – As measured under the longitudinal beam to left of selected deck monitoring point. • Beam R – As measured under the longitudinal beam to right of selected deck monitoring point. • Average (L & R) – Average of 3 and 4, above. • Gross Deck – As measured under the loading point expected to experience maximum deflection. • Net Deck – Column 6 minus Column 5. Deck Span: Transverse distance between main longitudinal bridge support members measured from inside edge to inside edge = _____________mm ÷ 100 = ____________mm = maximum allowable net deck deflection.

  5. 3. Materials List

  6. 4. Summary – Describe Bridge and Its Behavior Under Load (max. 500 words)

  7. Side Drawing (insert below)

  8. End Drawing (insert below)

  9. Trimetric Drawing (insert below)

  10. Drawing Clearly Showing Location of Loading and Deflection Gage Points in Relation to Longitudinal Members (insert below)NOTE: Repeat slide if loading set-up was moved to measure deck deflection.

  11. Drawing Clearly Showing Location of Loading and Deflection Gage Points in Relation to Transverse Members (insert below)NOTE: Repeat slide if loading set-up was moved to measure deck deflection.

  12. PHOTO Showing SIDE View of Loading Setup for Measuring Bridge Deflection (insert below)NOTE: Repeat slide if loading set-up was moved to measure deck deflection.

  13. PHOTO Showing END View of Loading Setup for Measuring Bridge Deflection (insert below)NOTE: Repeat slide if loading set-up was moved to measure deck deflection.

  14. End Photo of Finished Bridge

  15. Side Photo of Finished Bridge

  16. Trimetric Photo of Finished Bridge

  17. Team Photo (with bridge in the foreground, where possible)

  18. 6. Bridge Component Details

  19. 7. Preservative Treatment: Describe the preservative treatment applied to all wood members. Include type and concentrations. Also, include a short statement of why this treatment was selected. Did the treatment requirement present any special problems? If yes, provide details. If treatment was not selected, explain why.

  20. 8. Special Considerations –Indicate the End Use of Your Bridge

  21. 9. Summarize the Team’s Experience from Participation in this Competition. Was it beneficial? What steps would you recommend to improve the experience?

  22. Photo of Bridge Weighing

  23. One photo of each deflection gauge at full loading, with identification sign indicating DECK, BEAM LEFT, BEAM RIGHT, BRIDGE.

  24. Add as many photos as you wish showing the bridge construction process. Especially consider photos of internal structural components that may not be visible to judges from observing the finished bridge.

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