Building Bridges: SECME Requirements
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Transcript of Building Bridges: SECME Requirements
Building Bridges:SECME Requirements
Building Bridges:Factors in Bridge Design - #1
What is the span of the bridge?Span means the length of the bridge from one side (bank) to the other – 40-50 cm in length
Building Bridges:Factors in Bridge Design - #2
What are the requirements?A block 35 cm in length and 4 cm in height must
be able to pass under it
36.0 cm – 35.0 cm = 1. 0 cm (length left)5.08 cm – 4.0 cm = 1.08 cm (underneath bridge)
NO room for a substructure (underneath roadway)
Building Bridges:Factors in Bridge Design - #3
What are the superstructure requirements?
The superstructure (part above the roadway) – 10 cm – 20 cm in height
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10 cm – 20 cm
Building Bridges:Factors in Bridge Design - #4
What are the roadway requirements?
Must have a level surface (horizontal), called a roadway, that a Matchbox car can roll across
with a light push
Building Bridges:Factors in Bridge Design - #5
What are the roadway requirements?
Roadway’s width must be 5-10 cm
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5 cm –10 cm
Building Bridges:Factors in Bridge Design - #6
What are the weight requirements?
Total weight of the superstructure shall not exceed 110.0 grams (*Remember wood does
absorb moisture)
Building Bridges:Factors in Bridge Design - #7
What are the requirements?Design must have an opening in the middle of
the structure to allow for the test