A Treatise on Roads: Wherein the Principles on which Roads Should be Made are Explained and Illustrated, by the Plans, Specifications, and Contracts Made Use of by Thomas Telford, Esq. on the Holyhead RoadLongman, Orme, Brown, Green, and Longmans, 1838 - 465 páginas |
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Resultados 1-5 de 63
Página 2
... earth , and whenever we shall find no facility of travelling from a city to a town , or from a village to a hamlet , we may pronounce the people to be barbarians . " It has been well said by a writer in the first volume of the ...
... earth , and whenever we shall find no facility of travelling from a city to a town , or from a village to a hamlet , we may pronounce the people to be barbarians . " It has been well said by a writer in the first volume of the ...
Página 23
... earth , or side channels . The transverse section of the surface , when accurately ascertained by taking the levels of it , is rarely to be found of a regular convexity . The surface of all the roads , until within a few years , was ...
... earth , or side channels . The transverse section of the surface , when accurately ascertained by taking the levels of it , is rarely to be found of a regular convexity . The surface of all the roads , until within a few years , was ...
Página 50
... earth , such as the chalk hill embankment near Dunstable , and that near Chirk , in North Wales . In some situations it may be advisable to pass through a hill by means of a tunnel , instead of by deep cutting . There are three works of ...
... earth , such as the chalk hill embankment near Dunstable , and that near Chirk , in North Wales . In some situations it may be advisable to pass through a hill by means of a tunnel , instead of by deep cutting . There are three works of ...
Página 51
... earth embanked upon it , in order to destroy the elasticity of the subsoil . Although the surface coating of a road over such a subsoil may be made with a great abundance of the hardest materials , and be perfectly smooth , the porous ...
... earth embanked upon it , in order to destroy the elasticity of the subsoil . Although the surface coating of a road over such a subsoil may be made with a great abundance of the hardest materials , and be perfectly smooth , the porous ...
Página 58
... earth he must know , because it is not after he has begun to make his road that he is to discover the practical difficulties which stand in his way . In fact , it requires a considerable knowledge of geology ; the stratification and the ...
... earth he must know , because it is not after he has begun to make his road that he is to discover the practical difficulties which stand in his way . In fact , it requires a considerable knowledge of geology ; the stratification and the ...
Índice
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295 | |
100 | |
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458 | |
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Términos y frases comunes
Allesley arch Archway Road axles bottom breadth brick bridge broken stones built carriage centre coach coating commissioners constructed contract contractor Coventry cross drains DAVIES GILBERT depôts depth draught dynamometer earth eighteen inches elasticity embankments engineer expense experiments feet wide fences foot footpath fore wheels formed foundation four inches friction gravel ground half hard Hartshill height hill hind wheels Holyhead Road horizontal horses improvement inches deep inches thick inches wide instrument John Kershaw John Macneill labour laid length line of road manner masonry ment miles mortar mound necessary nine inches paved pavement placed Plate VII proper quicksets rails rates of inclination repair road-making roadway ruts side channels side springs six inches slopes specification spirit level springs square streets surface surveyor Telford theodolite Thomas Baylis three feet three inches trustees turnpike roads turnpike trusts upper velocity waggon whole wing walls
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Página 20 - They will here meet with rutts which I actually measured four feet deep, and floating with mud only from a wet summer; what therefore must it be after a winter?