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 sider |
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Resultater 1-5 af 32
Side v
... of Moving Bodies Collision - Friction Hardness Machine for measuring the Power of Traction Traction on different Kinds of Roads · Elasticity Erroneous Rules - 35 37 50 51 52 64 66 67 69 73 74 76 78 CHAP . III . FORMING A ROAD , P. 82 A 3.
... of Moving Bodies Collision - Friction Hardness Machine for measuring the Power of Traction Traction on different Kinds of Roads · Elasticity Erroneous Rules - 35 37 50 51 52 64 66 67 69 73 74 76 78 CHAP . III . FORMING A ROAD , P. 82 A 3.
Side 67
... Friction has very great influence in checking the motion of a carriage ; for , when the wheels come into contact with a soft or elastic surface , the friction which takes place operates powerfully in obstructing the tendency of the ...
... Friction has very great influence in checking the motion of a carriage ; for , when the wheels come into contact with a soft or elastic surface , the friction which takes place operates powerfully in obstructing the tendency of the ...
Side 68
... friction is sufficient to show , that smoothness and hardness are the chief qualities in a road . But perfect smoothness cannot be obtained without perfect hardness , and therefore the business of making a good road may be said to ...
... friction is sufficient to show , that smoothness and hardness are the chief qualities in a road . But perfect smoothness cannot be obtained without perfect hardness , and therefore the business of making a good road may be said to ...
Side 69
... of the resistance occasioned by friction , as above described by Professor Leslie , Bridges ' Natural Philosophy , vol . i . p . 150 . and from the terms of the definition of hardness ; F 3 PRINCIPLES OF ROAD - MAKING . 69.
... of the resistance occasioned by friction , as above described by Professor Leslie , Bridges ' Natural Philosophy , vol . i . p . 150 . and from the terms of the definition of hardness ; F 3 PRINCIPLES OF ROAD - MAKING . 69.
Side 71
... than one of broken stones , when mixed with the earth of the substratum of the road . It is by proceeding in the way here recommended that the friction of wheels on the surface of a F 4 PRINCIPLES OF ROAD - MAKING . 71.
... than one of broken stones , when mixed with the earth of the substratum of the road . It is by proceeding in the way here recommended that the friction of wheels on the surface of a F 4 PRINCIPLES OF ROAD - MAKING . 71.
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Almindelige termer og sætninger
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
Populære passager
Side 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?