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how can you make tower the strongest by using trusses and the other things? (only with woods, and glues, and tapes?)
Georgia Okeeffe elementary school , Albuqurque,nm, Uni
Trusses are very frequently used for building things
like towers and bridges. This is because they are constructed out of
triangle shapes. Triangles are a great shape to use for this because a
triangle cannot change shape without changing the length of at least
one side. The sticks used usually are rigid enough to prevent their
lengths from changing. In contrast, a square can flop into a skinnier
shape without changing any side lengths, so its strength depends on
making the joints between the sides strong and rigid, which is not so
There are a number of different kinds of trusses
because there are many different ways to arrange triangles. Which kind
is best depends on the situation - the shape of the tower, what sort of
stresses it's likely to be under, etc. If you are building a tower for
a project, you can try experimenting with different arrangements of
triangles to see what works best.
(republished on 07/12/06)
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