Text-book on Highway EngineeringJ. Wiley & sons, 1913 - 762 Seiten |
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Seite xi
... Mixtures - Con- struction - Subgrade and Foundation - Class IA - Class 1B - Class IC - Class 2 - Class 3 - Mechanical Appliances - Cost Data- Maintenance - Characteristics - Advantages- Disadvantages— Causes of Failure . CHAPTER XV ...
... Mixtures - Con- struction - Subgrade and Foundation - Class IA - Class 1B - Class IC - Class 2 - Class 3 - Mechanical Appliances - Cost Data- Maintenance - Characteristics - Advantages- Disadvantages— Causes of Failure . CHAPTER XV ...
Seite 137
... mixture . Whenever it is necessary to construct a concrete foundation over a trench which has recently been back - filled , the thickness of the foundation , for the full width of the trench and a foot or so on either side , might well ...
... mixture . Whenever it is necessary to construct a concrete foundation over a trench which has recently been back - filled , the thickness of the foundation , for the full width of the trench and a foot or so on either side , might well ...
Seite 139
... mixture as a wet one . A mixture which may be easily placed with good results will be obtained if enough water is used so that the resultant concrete is somewhat sloppy , but not so much so that any of the water will run away from it ...
... mixture as a wet one . A mixture which may be easily placed with good results will be obtained if enough water is used so that the resultant concrete is somewhat sloppy , but not so much so that any of the water will run away from it ...
Seite 145
... mixture of cement and sand in a dry state is spread over the surface and swept in . The surface is flushed with water , rolled , and more dry mortar spread on , during continued flushing and rolling , until all voids are filled . Cost ...
... mixture of cement and sand in a dry state is spread over the surface and swept in . The surface is flushed with water , rolled , and more dry mortar spread on , during continued flushing and rolling , until all voids are filled . Cost ...
Seite 150
... mixture of sand and clay will be much more satisfactory , under most conditions , than one composed of either of these soils alone . There are many places throughout the country where a top soil is found which is a mixture of these two ...
... mixture of sand and clay will be much more satisfactory , under most conditions , than one composed of either of these soils alone . There are many places throughout the country where a top soil is found which is a mixture of these two ...
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Text-Book on Highway Engineering (Classic Reprint) Arthur H. Blanchard Keine Leseprobe verfügbar - 2017 |
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½ inch amount applied asphalt cement asphalt pavements asphaltic oil average binder bituminous concrete pavements bituminous material bituminous surfaces block pavements brick broken stone built carbon carbon disulphide carriageway center line cities clay clean coal tar coat compacted concrete foundation construction cost course creosote oil crusher cubic centimeters cubic yard culvert curb curve degrees Centigrade degrees Fahrenheit depth distillation distributor dust elevations engineer feet filled filler gallon grade grams gravel grout hauling heated highways horses intersection joints laid layer less load macadam machine maintenance mesh method mineral aggregate mixed mixer mixture naphtha obtained paving percent pipe pitch placed Portland cement rails rock rolled roller sand scraper screen sheet asphalt side sidewalk soluble specific gravity spread square yard street subgrade tank tars temperature tion traction engine traffic varying vehicles wagon Warren Brothers wearing surface weight wheels width wood block
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Seite 292 - ... or until it is seen that a good subsidation has taken place. The solvent in both flasks is then again decanted through the filter and the residues remaining in them are washed until the washings are practically colorless.
Seite 209 - Ib. of coarsely broken stone shall be available for a test. The rock to be tested shall be broken in pieces as nearly uniform in size as possible, and as nearly 50 pieces as possible shall constitute a test sample. The total weight of rock in a test shall be within 10 g. of 5 kg. All test pieces shall be washed and thoroughly dried before weighing.
Seite 467 - Solid or semi-solid native bitumens, solid or semisolid bitumens obtained by refining petroleum, or solid or semi-solid bitumens which are combinations of the bitumens mentioned with petroleums or derivatives thereof, which melt upon the application of heat and which consist of a mixture of hydrocarbons and their derivatives of complex structure, largely cyclic and bridge compounds.
Seite 543 - Joints, if necessary to fill the same, and the operation shall be continued as the grout settles, until the joints are thoroughly filled, flush with the surface of the blocks, immediately after which the entire pavement shall be broomed to a smooth surface, sufficient grout being applied to bring said surface even with the highest part of any of the blocks. The blocks shall be wet by sprinkling Immediately before applying the grout, if the condition of the atmosphere requires this precaution to be...
Seite 688 - J, or even less, may be used. C should be increased for steep side slopes, especially if the upper part of the valley has a much greater fall than the channel at the culvert...
Seite 474 - The above limits as to mesh composition are intended to provide for such permissible variations as may be rendered necessary by the available sources of supply and the character of the work to be done. The mesh composition and character nf the stone may be varied, within the limits above specified.
Seite 509 - The bulb of the retort and at least two inches of the neck must be and remain covered with a shield of heavy asbestos paper, shaped as shown in diagram, during the entire process of distillation, so as to prevent heat radiation, and between the bottom of the retort and the flame of the lamp or burner two sheets of wire gauze, each 20-mesh fine, and at least six inches square, must be placed.
Seite 94 - All grades less than 3 per cent which are not herein required to be flattened shall be applied at the same rate as originally computed between established elevations; provided, that in no case shall the maximum platform and sidewalk slopes fixed in Paragraphs 6 and 7 be exceeded. Any excess in grade over that allowed in Paragraph 7 shall be removed by further flattening, as follows: (b) Special flattening of platform grades for extreme cases of steep grades or acute-angled intersections.
Seite 543 - Within one-half to three-quarters of an hour after the last coat has been applied and the grout between the joints has fully subsided and the initial set is taking place, the whole surface shall be lightly sprinkled with water and the surplus mixture left on the top shall be swept into the joints, bringing them up flush and full.
Seite 11 - The streets were described, in this simply -worded statute, as " very foul, and full of pits and sloughs, so as to be mighty perillous and noyous, as well for all the king's subjects on horseback, as on foot with carriages