Road Making and Maintenance: A Practical Treatise for Engineers, Surveyors, and OthersC. Griffin, Limited, 1900 - 440 Seiten |
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Seite 29
... hour , equivalent to a pleasant breeze , the force of the wind is equal to 1.107 lbs . per square foot , while at a velocity of 50 miles an hour , amounting to a violent storm , the force is equal to 12:30 lbs . per square foot of ...
... hour , equivalent to a pleasant breeze , the force of the wind is equal to 1.107 lbs . per square foot , while at a velocity of 50 miles an hour , amounting to a violent storm , the force is equal to 12:30 lbs . per square foot of ...
Seite 30
... hour . The equal increments of traction thus due to equal increments of velocity are less as the road is smoother , and as the carriage is less rigid or better hung . 5th . Upon soft roads , of earth , or sand , or turf , or roads fresh ...
... hour . The equal increments of traction thus due to equal increments of velocity are less as the road is smoother , and as the carriage is less rigid or better hung . 5th . Upon soft roads , of earth , or sand , or turf , or roads fresh ...
Seite 33
... hour , exert a pull of 110 to 120 lbs . on a level road with a smooth surface ; while at a speed of 4 miles an hour , the draught exerted will only amount to from 65 to 75 lbs . The tractive power of a horse becomes less as the speed ...
... hour , exert a pull of 110 to 120 lbs . on a level road with a smooth surface ; while at a speed of 4 miles an hour , the draught exerted will only amount to from 65 to 75 lbs . The tractive power of a horse becomes less as the speed ...
Seite 68
... hours of that day . A thaw and heavy rain succeeding a fall of snow when the ground is frozen , and a heavy rainfall during a thunderstorm , are certainly the worst possible conditions to be provided for in practice . The hard nature of ...
... hours of that day . A thaw and heavy rain succeeding a fall of snow when the ground is frozen , and a heavy rainfall during a thunderstorm , are certainly the worst possible conditions to be provided for in practice . The hard nature of ...
Seite 101
... hours . It is then wiped dry and weighed , the difference . between the two results obtained being due to the water absorbed by the stone . The stones of admitted suitability for road - metalling purposes absorb , as a general rule ...
... hours . It is then wiped dry and weighed , the difference . between the two results obtained being due to the water absorbed by the stone . The stones of admitted suitability for road - metalling purposes absorb , as a general rule ...
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Häufige Begriffe und Wortgruppen
adopted amount applied arch arrangement asphalte Aveling & Porter average basalt blasting gelatine blasting machine blocks bore-hole breaking machine broken carriageway carried carts cement cent charge Clee Hill coat of metalling concrete connection considerable consolidated construction cost counties cubic yard cutting cwts depth detonators diameter direction distance districts drains drill-bit dynamite economical effect embankment employed engine expenditure explosive feet fixed foundation gradients granite gravel hard haulage Hirnant holes horses inches iron jaws labour laid manual labour means method mile nature necessary obtained operations patching pavement paving placed portion position quarry reduced repairs road metal road surface roadway rock drill roller rolling sand scarifying screen shaft shot-holes shown in fig side sledging spread square yard steam road-rollers stone-breaking machine stones sufficient suitable syenite tamping thickness tons traction varying vehicles wear weather weight wheel traffic width wires wood
Beliebte Passagen
Seite 42 - CONTENTS. — Resolution and Composition of Forces — Work done by Machines and Living Agents— The Mechanical Powers : The Lever ; Derricks as Bent Levers — The Wheel and Axle : Windlass ; Ship's Capstan ; Crab Winch— Tackles : the "Old Man"— The Inclined Plane; the Screw— The Centre of Gravity of a Ship and Cargo — Relative Strength of Rope : Steel Wire, Manilla, Hemp, Coir — Derricks and Shears — Calculation of the Cross-breaking Strain of Fir Spar — Centre of Effort of Sails...
Seite 33 - TRAVERSE TABLES: Computed to Four Places of Decimals for every Minute of Angle up to 100 of Distance. For the Use of Surveyors and Engineers. BY RICHARD LLOYD GURDEN, Authorised Surveyor for the Governments of New South Wales and Victoria. ".* Published with the Concurrence of the Surveyors- General for New South Wales and Victoria. " Those who have experience in exact SURVEY-WORK will best know how to appreciate the enormous amount of labour represented by this valuable book.
Seite 72 - Public Analyst for the County of Devon, and Medical Officer of Health for St. Marylebone. AND M. WYNTER BLYTH, BA, B.Sc., FCS GENERAL CONTENTS. — History of Adulteration. — Legislation. — Apparatus. —
Seite 38 - is INVALUABLE. The NAVAL ARCHITECT will find brought togetner and ready to his hand, a mass of information which he would otherwise have to seek in an almost endless variety of publications, and some of which he would possibly not be able to obtain at all elsewhere."— Steamship.
Seite 59 - Professor of Mining and Director of the Otago University School of Mines ; late Director Thames School of Mines, and Geological Surveyor and Mining Geologist to the Government or New Zealand GENERAL CONTENTS.
Seite 73 - By C. AINSWORTH MITCHELL, BA, FIC, Mem. Council Soc. of Public Analysts. With numerous Illustrations and a coloured Plate.
Seite 44 - The little book will be found EXCEEDINGLY HANDY by most officers and officials connected with shipping. . . . Mr. Walton's work will obtain LASTING SUCCESS, because of its unique fitness for those for whom it has been written." — Shipping World. " An EXCELLENT WORK, full of solid instruction and INVALUABLE to every officer of the Mercantile Marine who has his profession at heart."— Shipping.
Seite 70 - THIRD EDITION, Revised, Enlarged, and Re-issued. Price 6s. net. A SHORT MANUAL OF INORGANIC CHEMISTRY. BY A. DUPRE, Ph.D.,- FRS, AND WILSON HAKE, Ph.D., FIO, FCS, Of the Westminster Hospital Medical School.
Seite 82 - A MANUAL OF DYEING; fOR THE USE OF PRACTICAL DYERS, MANUFACTURERS, STUDENTS, AND ALL INTERESTED IN THE ART OF DYEING. BY E.
Seite 82 - Properties, and Applications of the various substances described, and concise directions for their Commercial Valuation, and for the Detection of Adulterants. BY CHRISTOPHER RAWSON, FIC, FCS, Consulting Chemist to the Behar Indigo Planters' Association ; Co-Author of " A Manual of Dyeing ;