Engineering and Contracting . event water from reaching the-outside and undermining. 218 ENGINEERINGAND CONTRACTING A cobble shoulder and gutter is shown in Fig. 5. Thistype of shoulder protection is the most permanent of anyin use, although the most expensive. While lots of roughcobble work, built out of field stone, has been done onmany roads on the western shore of Maryland, very littleshoulder protection of such an expensive type as shownhere has been done in the state except on the roads nearthe Baltimore city limits, where it is used as a protectionagainst wear and not wash. The latest a
Engineering and Contracting . event water from reaching the-outside and undermining. 218 ENGINEERINGAND CONTRACTING A cobble shoulder and gutter is shown in Fig. 5. Thistype of shoulder protection is the most permanent of anyin use, although the most expensive. While lots of roughcobble work, built out of field stone, has been done onmany roads on the western shore of Maryland, very littleshoulder protection of such an expensive type as shownhere has been done in the state except on the roads nearthe Baltimore city limits, where it is used as a protectionagainst wear and not wash. The latest and most satisfactory method in use as apreventative against the washing of slopes on heavy fillsof a light soil is shown in Fig. 6. As shown in the de-tail view, a wooden shoulder or curb, built of 2 and , extends along the outer edge of shoulder. Woodenbreakers are placed at various points to prevent wash-ing and undermining of this wooden curb, also m frontof chute to divert the water into it. A plank is laid flat. Fig. 7—Road End of Flume. in front of chute to prevent the water from getting underthe end. The chute is placed at an angle of probably60° with the roadway and spaced from 25 to 100 ft. length of the chute depends of course upon theheight of the fill. Rough lumber is used for this from 1 to 3 in. in thickness is used. The cost of this construction is small and at this par-ticular location, on the Belair road not far from the citylimits, since the chutes were built in the spring of 1915,they have saved damages from washing which wouldhave amounted to hundreds of dollars. EXPERIENCE OF GLASGOW, SCOTLAND, WITHMOTOR STREET SW EEPING MACHINES. A marked saving in the cost of street cleaning has beeneffected by the city of Glasgow, Scotland, by the use ofmotor street sweeping machines. This city has a popula-tion of 1,075,000. Its area is 30 square miles and it has475 miles of streets, most of which are paved with whinor granite blocks
Size: 2023px × 1235px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
