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An account of the construction of the Britannia and Conway tubular bridges : with a complete history of their progress, from the conception of the original idea, to the conclusion of the elaborate experiments which determined the exact form and mode of construction ultimately adopted / by William Fairbairn
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FIG. 41 .

FIG. 42 .

In. 12 _ Q

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ScaleOne third of an Inch _ l Toob.

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