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CHAPTER 4 (1.1 Steel I-Beams (girders) (form main horizontal beam in…
CHAPTER 4
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3. Arches
curved structure, supports horizontal structure
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3.1 Arches in Buildings
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compression forces in arch push stones tight together, compression forces lock stones in arch
3.3 Arches in Dam Walls
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force of water, makes arch stronger, compression force is pushed to walls & foundations
arch shape is good for dams in gorges/canyons, supports structure & withstands stress well
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2.1 Suspension Bridges
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a suspension bridge is held in place with cables; a tower is raised on each end of the river; a pair of cables are supspended between two towers. More cables are hung from the suspended cables for support
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3.2 Arches in Bridges
in ancient times, bridges could support heavier loads
built with stone, not iron or steel
4.1 Simple Cantilevers
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when a load is applied, it bends, e.g. wings of a plane & other buildings & bridges
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