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Structural engineering and How to reinforce the design of a structure to hold more weight.

IEEE TEP Activity 1: Critical Load. Structural engineering and How to reinforce the design of a structure to hold more weight. 2010 Spring Technical English Program Санкт - Петербург, Рассия May 15, 2010. IEEE TEP: Critical Load. Communicate design objectives

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Structural engineering and How to reinforce the design of a structure to hold more weight.

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  1. IEEE TEP Activity 1: Critical Load Structural engineering and How to reinforce the design of a structure to hold more weight. 2010 Spring Technical English Program Санкт-Петербург, Рассия May 15, 2010

  2. IEEE TEP: Critical Load Communicate design objectives Learn about efficiency ratings and critical load Develop innovative design solutions Work as a team and communicate in English Objectives

  3. IEEE TEP: Critical Load Great Structures of the World Millau Viaduct • Millau, France • World’s Tallest Bridge • 2460m long434m pylon height270m road height • December, 2004

  4. IEEE TEP: Critical Load Great Structures of the World Yokohama Landmark Tower • Yokohama, Japan • Japan’s TallestOffice Building • 296m tall70 floors including office and hotel • July, 1993

  5. IEEE TEP: Critical Load Great Structures of the World Beijing National Stadium – “Bird’s Nest” • World’s Largest Steel Structure • 258,000 square meters • 5 years to construct • 110,000 tons of steel used in construction • 3,000,000 cubic meters • Opened June, 2008

  6. IEEE TEP: Critical Load Great Structures of the World Crystal Cathedral • Garden Grove,California, USA • World’s Largest Glass Building • 12 stories tall12,000+ panes of glass • 16,000-pipe organ • Opened 1980

  7. IEEE TEP: Critical Load Great Card Structures of the World Skyscraper of Cards • 2007 World RecordTallest House of Cards • Over 7.5 meters tall • No glue or tape; just cards • Built by Bryan Berg in 2007

  8. IEEE TEP: Critical Load What is Critical Load? Force • Force is placed on a structure • Structure can support up to a certain force, weight • At a certain point, the structure will fail, breaking • The maximum force the structure can sustain before failure is known as the “Critical Load” Force

  9. IEEE TEP: Critical Load A high critical load is not the only parameter to consider Is the best bridge made by filling a canyon with concrete? It certainly would have a high critical load! Consider also the weight of the structure Lighter is better, given the same critical load These two parameters are combined in an “Efficiency Rating”: Efficiency

  10. IEEE TEP: Critical Load Your Turn • Groups of 2 • Up to 10 cards + 1 meter tape • Devise a plan to build a load bearing structure • Should have a flat top • Support load with base area of 10x10cm at least 8 cm above the table • No altering of cards allowed – just tape!

  11. IEEE TEP: Critical Load Your Turn Example: • Supports load • Load is at least 8 cm above table • Cards failed after load of 2.4kg • Structure made with 4 cards • Efficiency rating:2.4 kg / 4 cards = 0.6 kg/card 8.5 cm height

  12. IEEE TEP: Critical Load Discuss design ideas with you partner. Sketch/Draw your design on paper. Predict what efficiency value you will achieve; record this number. Build your design; LIMIT OF 1 METER OF TAPE! Use dead weight (washers/nuts) to load your design until it fails (collapses). Weigh the critical load of your structure. Calculate your efficiency: [Load at Failure] / [# of cards used] Discuss improvements; Answer questions on worksheet in ENGLISH! Your Turn

  13. IEEE TEP: Critical Load What was your efficiency rating?How close were you to your prediction? What made your design good or bad? What other factors would you need to take into consideration if your Card House were a real office building? … a bridge? Conclusion

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