Your Civil Engineering Firm has been hired to design and build a model of a bridge to replace the old truss bridge across town. You have to design the bridge and build a model using coffee stirrers to present before the community leaders for approval. The model must meet the following specifications.
The bridge must have a span at least 30 cm long, a roadbed at least 5 cm wide and a clearance of at least 10-cm in height. The distance between the bridge supports should be at least 10 cm apart, unless the bridge has only one tower or support structure. Draw the side, top and end view of the bridge along with the support structure according to the specifications. This will serve as the template, or blueprint that the firm will use to construct their model. Once the design is approve by the president of the firm, you will be given materials (according to the type of bridge the firm choose) to build the model.
The following materials are available for your group to use in order to build the model: coffee stirrers, wire, glue, string and hooks. Make sure the materials that are needed to complete your model are clearly shown on the firms' drawing. You will receive these materials once your design is approved. Your design and model will be evaluated using the rubric below.
A rubric is an evaluation tool that lets the student know exactly what is expected of them in an assignment. Before the students begin the project, the instructor should go over each of the criteria listed below. The possible points for each item listed should be told to the students. To make grading easier, the points should total one hundred. Once the students fully understand their task and how they will be graded everyone will have a full understanding of what is expected of them.
Rubric for the Bridge Design
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Possible Points Points Earned
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The drawing is neat and legible……………….
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The three views are labled………………………
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The bridge span is at least 30 cm long……..
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The roadbed is at least 5 cm wide……………
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The clearance of at least 10 cm in tall………
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The distance between the bridge
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supports is at least 10 cm apart………………
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Rubric for the Model
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Possible Points Points Earned
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The team adhered to the design……………….
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The model is neatly done………………………
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The model is built with materials supplied…
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The bridge span is at least 30 cm long……..
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The roadbed is at least 5 cm wide……………
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The clearance of at least 10 cm in tall………
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The distance between the bridge
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supports is at least 10 cm apart………………
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