Engineering and Contracting . ve been adopted. I have been impressed with the be-lief that a 16-ft. roadway is the minimum width to beconsidered and that an 18-ft. roadway is by far the pre-ferable width. Many persons hold that with a goodberme, the 16-ft. roadway is ample. There are several rea-sons why that width under present conditions, seems tome to be too narrow. 1st. It is difficult to construct a safe berme at the timeof first constructing our country pavements. Theground is too soft to hold the load that passes upon it,and if perchance in time the ground becomes sufficientlyfirm and a
Engineering and Contracting . ve been adopted. I have been impressed with the be-lief that a 16-ft. roadway is the minimum width to beconsidered and that an 18-ft. roadway is by far the pre-ferable width. Many persons hold that with a goodberme, the 16-ft. roadway is ample. There are several rea-sons why that width under present conditions, seems tome to be too narrow. 1st. It is difficult to construct a safe berme at the timeof first constructing our country pavements. Theground is too soft to hold the load that passes upon it,and if perchance in time the ground becomes sufficientlyfirm and a fair stand of grass grows upon the berme,when any vehicle passes from the pavement upon thegrass, if the grass is the least bit wet, the tendency is tocause the vehicle to skid and pass into the ditch. 2nd. Another reason is that on our motors we are nowusing almost exclusively the left drive, and passing to theright. The result is that the driver cannot see clearly andeasily the relation of the right wheels to the margin of. Fig. 1—Sand Sprinkler, Victoria, B. C. men are stationed in the truck to keep the hopper filledwith sand. The wrought iron whirling plate is 30 in. indiameter and is divided into four sectors by angle ironplates, forming vertical, radial ridges, which, as the platerevolves, act in the same way as the vanes of a centrifugalpump and cast the sand outward upon the road surface inthe form of an evenly distributed shower. The sprinklerwill spread sand over a 10-ft. width of roadway. Whenthe truck travels at the rate of 3 miles per hour the diskrotates at a speed of 285 r. p. m. WIDTH AND FINAL DEVELOPMENT OF PAVEDCOUNTY HIGHWAYS SUITED TO WEST-ERN WASHINGTON.* Where the number of vehicles passing in a given timeis relatively small, roads may be built and pavements laidsimply to suit the convenience of one vehicle, with turn-outs or passing places, constructed at reasonable intervals,and in the matter of economy both of original construc-tion and of maintenan
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
