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 |
No interior do livro
Resultados 1-5 de 43
Página 79
... horizontal , because as gravity acts in a direction perpendicular to the plane of the horizon , it neither accelerates nor retards the motion . † But when the road is not " You don't mean to say you would prefer a bog ? -If it was not ...
... horizontal , because as gravity acts in a direction perpendicular to the plane of the horizon , it neither accelerates nor retards the motion . † But when the road is not " You don't mean to say you would prefer a bog ? -If it was not ...
Página 80
... horizontal , the power of gravity is a great impedi- ment . A mathematical illustration of the effect of gravity on hills is given in note D. The resistance arising from the action of the air is very variable ; in some cases , it acts ...
... horizontal , the power of gravity is a great impedi- ment . A mathematical illustration of the effect of gravity on hills is given in note D. The resistance arising from the action of the air is very variable ; in some cases , it acts ...
Página 83
... horizontal to one foot perpendicular ; for though several kinds of earth will stand at steeper inclina- tions , a slope of two to one is necessary for ad- mitting the sun and wind to reach the road . whole of the green sod and fertile ...
... horizontal to one foot perpendicular ; for though several kinds of earth will stand at steeper inclina- tions , a slope of two to one is necessary for ad- mitting the sun and wind to reach the road . whole of the green sod and fertile ...
Página 84
... horizontal to one perpendicular , in order to secure the great advantage of allowing the sun and wind to reach more freely the surface of the road . In districts of country where stones abound , ex- pense in moving earth and purchasing ...
... horizontal to one perpendicular , in order to secure the great advantage of allowing the sun and wind to reach more freely the surface of the road . In districts of country where stones abound , ex- pense in moving earth and purchasing ...
Página 87
... horizontal for one foot perpendicular . In cuttings in chalk or chalk marl , the slopes will stand at one to one ... horizontal plane is called the line of bearing of that stratum , or the drift line . The dip , or inclination , of the ...
... horizontal for one foot perpendicular . In cuttings in chalk or chalk marl , the slopes will stand at one to one ... horizontal plane is called the line of bearing of that stratum , or the drift line . The dip , or inclination , of the ...
Índice
235 | |
241 | |
244 | |
251 | |
257 | |
263 | |
272 | |
295 | |
100 | |
118 | |
130 | |
156 | |
167 | |
173 | |
185 | |
187 | |
191 | |
203 | |
209 | |
231 | |
303 | |
310 | |
321 | |
338 | |
348 | |
360 | |
367 | |
385 | |
433 | |
436 | |
451 | |
458 | |
Outras edições - Ver tudo
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualização integral - 1837 |
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualização integral - 1838 |
A Treatise on Roads: Wherein the Principles on which Roads Should be Made ... Sir Henry Parnell Visualização integral - 1833 |
Palavras e frases frequentes
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
Passagens conhecidas
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?