ach, andji inches long. Fig. 19 is a section of railway adopted on part of the same line asfig. 17. n Fie Parallel trenches a are excavated 1 ft. 10 in. wide, and 1 foot deep, belowthe surface of the ground, and filled in with broken stones, upon whichare bedded continuous stone blocks B, 1 foot…
Civil engineering · Architecture
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