Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 490
oken stone, supported on a bottom course or layer of stoneset by hand in the form of a close, firm pavement. Early in the construction of the New York Central Park, after trials of theMacadam and Telford roads, gravel was adopted and still maintains its positionfor these roads. The gravel road, of… … Fig. 1120. 474 ENGINEERING DRAWING. i 5 X 10 the reception of water and deposit of silt from the gutters; S is the mainsewer or drain, and s a sewer-pipe leading to a catch-basin on opposite side ofthe road. In wider roads each side has its own main drain, and there is nocross-pipe s. The road-bed…
Mechanical drawing
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