A Treatise on Roads and PavementsJohn Wiley & Sons, 1910 - 655 Seiten |
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amount asphalt pavements asphaltic cement average binder binder course binding material bitumen brick pavement broken stone broken-stone road cents per cubic cents per square cities clay coal-tar concrete considerable construction cost crown cubic yard curb curve drainage durable dust earth roads edge embankment employed Engineering expense feet filled foot foundation granite gravel gravel road gutter hard haul horses inches inches thick joints labor laid layer less limestone load loam macadam maintenance Massachusetts Highway Commission ment method mile mixed mortar paving brick plank Portland cement pounds prevent rattler repairs road surface rock roller rolling ruts sand sandstone scraper scraping grader shown in Fig side ditches sidewalk slope smooth soil sprinkling square yard steam roller straight edge street subgrade Table tamped telford tile tion track traffic trench usually varies wagon walk wearing coat weight wheels width wood York City
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Seite 23 - ... (1) when the road is sloppy, muddy or sticky on the surface and firm or hard underneath; (2) when the surface is covered with a very deep loose dust and hard underneath; (3) when the mud is very deep and so sticky that it adheres to the wheels of both kinds of wagons.
Seite 457 - The Report of the Operations of the Engineering Department of the District of Columbia for the year ending June 30, 1901...
Seite 94 - The extra distance is known by the name of haul, and is to be computed by the engineer with respect to so much of the material as is affected by it. The contractor is entitled to the benefit of all short hauls (less than the specified limit), and material so moved should not be averaged against that...
Seite 324 - When this method is not practicable, adopt such a grade (but one not exceeding 2£ per cent) a that the rectangle AAAA shall appear to be nearly level; but to secure this it must actually have a considerable dip in the direction of the slope of the street. If steep grades are continued across intersections, they introduce side slopes in the streets thus crossed, which are troublesome, if not dangerous, to vehicles turning the corners, especially the upper ones. Such intersections are especially objectionable...
Seite 150 - Location. — The project involves improvement of the Mississippi River from the mouth of the Ohio River to the mouth of the Missouri River.
Seite 44 - act. Under this act the State was to pay 50 per cent, the county 35 per cent, and the town 15 per cent of the cost of stone-surfaced roads to be built in accordance with its provisions. Petition for this aid had to originate with the county board of supervisors, upon receipt of which and in accordance wherewith the State engineer and surveyor was required to prepare plans, specifications, and estimates...
Seite 508 - The box for this purpose shall be 3^ to 4 feet long, 27 to 30 inches wide and 14 inches deep, resting on legs of different lengths, so that the mixture will readily flow to the lower corner of the box, which should be from 8 to 10 inches above the pavement.
Seite 185 - ... (0.9 ounce) of dust to make a briquette of the above dimensions. Two weeks should be allowed for a briquette to dry, at the ordinary temperature of a room, after which it should be tested within a few days.
Seite 450 - Any lack of uniformity of the surface must be corrected by taking up the blocks, increasing or decreasing the sand bedding, and relaying them. When the ramming is completed, a sufficient amount of fine, dry sand, as above described, will be spread over the surface and swept into the joints.
Seite 483 - The loss shall be calculated in per cents of the weight of the dry brick composing the charge ; and no result shall be considered as official unless it is the average of two distinct and complete tests made on separate charges of brick.