Elkin High School Career and Technical Education

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Presentation transcript:

Elkin High School Career and Technical Education Bridge Models Objective 7.07 Explain the characteristics of structural systems. Elkin High School Career and Technical Education

Types of Trusses

Guidelines for Joining Wood

You will be required to analyze your bridge and discuss which type of stress caused it’s demise!

Engineering Efficiency

Evaluation

Rubric Criteria Points Earned Meets specifications 20 Possible Points Neatly constructed 1st Place = 20 Points 2nd Place = 18 Points 3rd Place = 16 Points 4th Place = 14 Points 5th Place = 13 Points 6th Place = 12 Points Bridge weight = _______ g

Rubric (Continued) Mass Supported by bridge for 30 seconds = ______kg 1st Place = 20 Points 2nd Place = 18 Points 3rd Place = 16 Points 4th Place = 14 Points 5th Place = 13 Points 6th Place = 12 Points Efficiency rating = ______ TOTAL POINTS EARNED:

Supplies Wood Glue Graph Paper Box Cutter (Remember Safety!) Cutting Surface (Cut on only approved surfaces!) Wax Paper Straight Pins

Questions??? Comments!!!