TOOTHPICK
BRIDGES
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To help you get started on your
project today I've prepared an Internet tour. You
will research the following web sites and answer
each corresponding question. At the conclusion
are some general questions to be answered, which
take into account everything you've viewed.
1. List four types of bridge
structures.
2. Which type of bridge
structure would be most suitable for a 700' span across a
deep canyon gorge?
3. Which bridge in Cincinnati is
nick-named for a hamburger chain and
Why?
4. Which bridge in Cincinnati
was the 1st standard cantilever truss bridge ever built
and when?
5. For support which is better a
truss or a beam?
Why ?
6. Why is the triangle the basic
unit of any truss?
7. Who was the 1st American to
use mathematical calculations in truss design and when?
8. List and compare the three
most common travel surface (roadbed) configurations.
9. Why is a Queen Post truss
less stable than a King Post truss?
10. Draw a diagram to show the
differences between a multiple King Post truss and a Howe
truss.
11. Who holds the class record
in Mr. Lewis' Classroom for the Toothpick Bridge
Competition and what is the winning ratio?
GENERAL QUESTIONS
Why were most present day bridge
designs developed during the mid- to late 1800's?
Based on your research to this
point select which type of bridge structure would be best
suited for your bridge project and justify your
selection.
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