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Updated: May 13, 2025
The chord-line, as you see, carries you by Aldie, Haymarket, and Fredericksburg, and you see how turnpikes, railroads, and finally the Potomac by Aquia Creek, meet you at all points from Washington. The same, only the lines lengthened a little, if you press closer to the Blue Ridge part of the way.
He made the general body of the arch an ellipse, 150 feet on the chord-line and 35 feet rise, while the voussoirs, or external archstones, being in the form of a segment, have the same chord, with only 13 feet rise. "This complex form," says Mr.
There was an awakening of the mind, in physics as well as in politics, at that period; and it must be confessed that the natural philosophers have succeeded better than the constitution-makers. Paine's mechanical hobby was an iron bridge. A single arch, of four hundred feet span, and twenty feet in height from the chord-line, was to be thrown over the Schuylkill, near Philadelphia.
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