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TISP: Uruguay 9–10 May 2009 User Handout Day 2. Critical Load. Christopher Lester Yvonne Pelham Moshe Kam D.G. Gorham. Exercise 4: Critical Load. Structural engineering and how to reinforce the design of a structure to hold more weight. Critical Load.

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Critical Load


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    1. TISP: Uruguay9–10 May 2009 User Handout Day 2 Critical Load Christopher Lester Yvonne Pelham Moshe Kam D.G. Gorham

    2. Exercise 4: Critical Load Structural engineering and how to reinforce the design of a structure to hold more weight.

    3. 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

    4. Critical Load Your Turn • Groups of 2 • Up to 12 cards + 1m 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! • No wrap-ups of tape • Tape is used to connect cards only

    5. Critical Load Your efficiency rating:[Load at Failure] / [# of cards used] Predict what the rating of your design will be Build your design Test it! Discuss improvements, then repeat exercise for a second design Your Turn