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 pàgines |
Des de l'interior del llibre
Resultats 1 - 5 de 90.
Pàgina 65
... thickness . * Whereas , instead of this weak and defective system , it may be laid down as a general rule , that on ... thick bed of well - broken hard stones laid upon the subsoil , may , no doubt , be , to all appearance , a hard and ...
... thickness . * Whereas , instead of this weak and defective system , it may be laid down as a general rule , that on ... thick bed of well - broken hard stones laid upon the subsoil , may , no doubt , be , to all appearance , a hard and ...
Pàgina 71
... thick coating of broken stones is used , for six inches of broken stones is sufficient when laid on a pavement , and the pavement may be made with any kind of common stone . If the stones in making the bottoming are laid with their ...
... thick coating of broken stones is used , for six inches of broken stones is sufficient when laid on a pavement , and the pavement may be made with any kind of common stone . If the stones in making the bottoming are laid with their ...
Pàgina 73
... thick coating of broken stone , laid on earth , the power required is 65 lbs .; and on a road made with a thick coating of gravel , laid on earth , the power required is 147 lbs . Thus it appears that the re- sults of actual experiments ...
... thick coating of broken stone , laid on earth , the power required is 65 lbs .; and on a road made with a thick coating of gravel , laid on earth , the power required is 147 lbs . Thus it appears that the re- sults of actual experiments ...
Pàgina 75
... thick were properly beat down , that will not yield ? —Nine inches will yield very much . " What , on an old road of nine inches thick ? —Yes , with heavy waggons . One of the great advantages arising from Mr. Tel- ford's system of ...
... thick were properly beat down , that will not yield ? —Nine inches will yield very much . " What , on an old road of nine inches thick ? —Yes , with heavy waggons . One of the great advantages arising from Mr. Tel- ford's system of ...
Pàgina 77
... thicker the crust of the road is the harder it will be , because a thick crust will not yield as much as a thin one . " In laying out a line of road you would avoid , if possible , going over marshy ground ? -Clearly so ; or at least ...
... thicker the crust of the road is the harder it will be , because a thick crust will not yield as much as a thin one . " In laying out a line of road you would avoid , if possible , going over marshy ground ? -Clearly so ; or at least ...
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Altres edicions - Mostra-ho tot
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualització completa - 1837 |
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualització completa - 1838 |
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualització completa - 1833 |
Frases i termes més freqüents
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
Passatges populars
Pàgina 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?