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 45.
Pàgina 32
... coating of very bad stones or gravel was all that covered the soil ; the transverse sections were often just the reverse of what they ought to be ; the draining was mi- serably defective , and either no protecting fences , or very weak ...
... coating of very bad stones or gravel was all that covered the soil ; the transverse sections were often just the reverse of what they ought to be ; the draining was mi- serably defective , and either no protecting fences , or very weak ...
Pàgina 51
... 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 and moist texture of the subsoil will cause the road to yield to a carriage passing over it ; and ...
... 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 and moist texture of the subsoil will cause the road to yield to a carriage passing over it ; and ...
Pàgina 65
... coating of at least six inches of broken stone of the hardest kind laid upon it ; and further , that in all cases where the subsoil is elastic , it is necessary , before the foun- dation is laid on , that this elastic subsoil should be ...
... coating of at least six inches of broken stone of the hardest kind laid upon it ; and further , that in all cases where the subsoil is elastic , it is necessary , before the foun- dation is laid on , that this elastic subsoil should be ...
Pàgina 70
... coating of broken stones ; for the car- riages passing over them will force those next the earth into it , and , at the same time , press much of the earth upwards between the stones ; this will take place to a great degree in wet ...
... coating of broken stones ; for the car- riages passing over them will force those next the earth into it , and , at the same time , press much of the earth upwards between the stones ; this will take place to a great degree in wet ...
Pàgina 71
... coatings of broken stones ; but several of these will be necessary , and , after all , in long - continued wet weather , the mud will continue to be pressed upwards from the bottom to the surface of the stones . If even a coating of ...
... coatings of broken stones ; but several of these will be necessary , and , after all , in long - continued wet weather , the mud will continue to be pressed upwards from the bottom to the surface of the stones . If even a coating of ...
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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?