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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Página 7
... of two feet each . ” * The funds for making roads were so well secured and so considerable , that the Romans were not * See Tredgold on Railways , p . 6 . satisfied to make them convenient and durable , but they B 4 INTRODUCTION . 7.
... of two feet each . ” * The funds for making roads were so well secured and so considerable , that the Romans were not * See Tredgold on Railways , p . 6 . satisfied to make them convenient and durable , but they B 4 INTRODUCTION . 7.
Página 62
... secured in making a road . It is owing very much to omitting to take this circumstance into con- sideration , that vague and erroneous opinions so generally prevail respecting what a road ought to be in order that it should be a ...
... secured in making a road . It is owing very much to omitting to take this circumstance into con- sideration , that vague and erroneous opinions so generally prevail respecting what a road ought to be in order that it should be a ...
Página 63
... secured , without reference to the indispensable necessity of making a road extremely hard and solid as well as smooth . Dr. Lardner says , - " Until a compara- tively late period a very prevalent , indeed almost universal error ...
... secured , without reference to the indispensable necessity of making a road extremely hard and solid as well as smooth . Dr. Lardner says , - " Until a compara- tively late period a very prevalent , indeed almost universal error ...
Página 91
... secured by cutting the slope of the hill below the line of road into level steps to receive the earth , and the road materials are not to be laid on the embankment until the inspector is satisfied it will stand . " Second Specification ...
... secured by cutting the slope of the hill below the line of road into level steps to receive the earth , and the road materials are not to be laid on the embankment until the inspector is satisfied it will stand . " Second Specification ...
Página 97
... been taken , the preservation of the surface from injury by water should be further secured , by giving a proper con- H vexity in the cross section , and by making regular DRAINAGE . 97 Cross Drains Outlets 1 Catchwater Drains.
... been taken , the preservation of the surface from injury by water should be further secured , by giving a proper con- H vexity in the cross section , and by making regular DRAINAGE . 97 Cross Drains Outlets 1 Catchwater Drains.
Índice
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272 | |
295 | |
100 | |
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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
Pasajes populares
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?