What Engineers Do: An Outline of Construction

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Norton, 1928 - Civil engineering - 259 pages

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Page 178 - ... or ever the silver cord be loosed, or the golden bowl be broken, or the pitcher be broken at the fountain, or the wheel broken at the cistern. Then shall the dust return to the earth as it was : and the spirit shall return unto GOD Who gave it.
Page 74 - If, however, solid ground cannot be found, but the place proves to be nothing but a heap of loose earth to the very bottom, or a marsh, then it must be dug up and cleared out and set with piles made of charred alder or olive wood or oak, and these must be driven down by machinery, very closely together like bridge-piles, and the intervals between them filled in with charcoal, and finally the foundations are to be laid on them in the most solid form of construction.
Page 209 - I cannot too strongly insist upon the need of a return to the method of old times. Our ancestors, when about to build a town or an army post, sacrificed some of the cattle that were wont to feed on the site proposed and examined their livers. If the livers of the first victims were dark-coloured or abnormal, they sacrificed others, to see whether the fault was due to disease or their food. They never began to build defensive works in a place until after they had made many such trials and satisfied...
Page 32 - Nebo ; * the Saviour ; the wise man, who lends his ears to the orders of the highest god ; the lieutenant without reproach, the repairer of the Pyramid and the Tower, eldest son of Nabopolassar, King of Babylon. We say : — " Merodach, the great master, has created me ; he has imposed on me to reconstruct his building. Nebo, the guardian over the legions of the heaven and the earth, has charged my hands with the scepter of justice.
Page 209 - ... and these bodies, as we believe, giving way and breaking up as a result of excess or deficiency in this or that element, we cannot but believe that we must take great care to select a very temperate climate for the site of our city, since healthfulness is, as we have said, the first requisite. 9. I cannot too strongly insist upon the need of a return to the method of old times. Our ancestors, when about to build a town or an army post, sacrificed some of the cattle that were wont to feed on the...
Page 245 - The kinds of pitsand are these: black, gray, red, and carbuncular. Of these the best will be found to be that which crackles when rubbed in the hand, while that which has much dirt in it will not be sharp enough. Again : throw some sand upon a white garment and then shake it out; if the garment is not soiled and no dirt adheres to it, the sand is suitable.
Page 166 - It is well worth while to consider some of the factors that must be taken into account by engineers before they can decide on a certain type of bridge.
Page 212 - ... and the determination of the real magnitudes made definite. That way is to introduce further propositions about the errors € , so that some of them are made dependent on the others and the number of independent variables is reduced. This course is actually adopted ; but before we examine the matter further it will be well to stop for a moment and consider carefully the position at which we have arrived. The theory of measurement. We started to escape from the discrepancies arising from the...
Page 131 - At any rate they were able to lay out the base of the Great Pyramid so that the corners varied only 12 seconds, or %oo part of a degree, from being perfect right angles.
Page xvii - A story of civil engineering and construction, of men, ideas and materials. It is an outline of what has been done in this field and a description of the methods and means by which the ends were attained. Some of the subjects described are, how tunnels under water are built, what a cantilever is, why concrete is reinforced, how railroads are built over swamps, and many other facts which make engineering an...

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