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Pictorial Handbook of Technical Devices by: Otto B. Schwarz and ...

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VII STRUCTURAL ENGINEERING<br />

6-BRIDGES<br />

A-Structures<br />

a-Single-strut deck truss for short spans up to 40 feet.<br />

b-Double-strut deck truss for spans up to 70 feet.<br />

c-Multiple-strut deck truss for spans up to 100 feet.<br />

d-Truss with interpanel tie rods. (Whipple)<br />

e-Truss in which the vertical <strong>and</strong> end posts are struts; it has vertical tie<br />

rods from the end posts <strong>and</strong> diagonal tie rods in the panels. (Whipple)<br />

f-Truss with vertical struts, except in the end panels which have vertical<br />

tie rods, with inclined end struts <strong>and</strong> diagonal tie rods.<br />

g-Arch-deck truss bridge.<br />

h-Truss with inclined strut <strong>and</strong> tie rod for each panel, with stiff<br />

compression upper chord., the vertical members being tie rods.<br />

j-Truss with inclined posts <strong>and</strong> vertical tie rods. (Baltimore model)<br />

k-Arch-truss bridge.<br />

I-Truss, having vertical end posts with inclined struts meeting at the<br />

center. (Post)<br />

m-Swing bridge. (Whipple)<br />

n-Swing bridge. (Post)<br />

o-Cantilever bridge.<br />

p, q, r-Suspension bridges.<br />

s-Steel-arched concrete bridge. (Thatcher type)<br />

t-Rolling lift bridge. (Chicago type)<br />

u-Truss (combination <strong>of</strong> “Whipple” <strong>and</strong> “Warren System”).<br />

v-Brooklyn-New York bridge. (Roebling suspension system)

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