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Piling Engineering 3rd Edition

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  • Saadedin
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    • Sep 2018 
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    Piling Engineering - 3rd Edition




    Introduction

    Since man first sought to establish secure dwellings and to cross streams and rivers

    where fluctuating water levels gave an element of uncertainty to travel arrangements,

    the driving of robust stakes or piles in the ground has provided a means whereby the

    hazards of living could be reduced.

    Various peoples in different parts of the world found it convenient to dwell by lake

    shores where food, water and easy transport were readily to hand and where water

    levels remained reasonably constant. Evidence of piled settlements has been found on

    the borders of lakes in, for example, Switzerland, Italy, Scotland and Ireland.

    It is believed that some of these settlements were in use about 4000 years ago and

    they were sometimes of considerable size, as on the shores of Lake Geneva opposite

    Morges. In another settlement at Robenhausen, it has been estimated that over 100 000

    piles had been used. In this case the piles were beneath a covering of peat moss which

    it is reckoned would have taken at least 2000 years to form. Recent archaeological

    excavations elsewhere in Switzerland and in France have confirmed that piles were

    used widely for housing along marshy lake shores.

    At Lough Drumkeery in Co. Cavan, Ireland, about 30 000 ancient piles including

    primitive sheet piles were found in l863. These consisted of birch and oak, and the

    oak piles had been carefully pointed and driven to a depth of about 3 m.

    The first historical reference to piling appears to be by Herodotus, the Greek writer

    and traveller who is sometimes referred to as the ‘father of history’ and who lived in the

    fourth century b.c. He records how a Thracian tribe, the Paeonions, lived in dwellings

    erected on lofty piles driven into a lake bed. The piles were driven under some kind

    of communal arrangement but after a time a law had been made that when a man

    wished to marry, he had first to drive three piles. Since the tribe was polygamous,

    the number of piles installed was considerable. This system provided a unique and

    practical method of founding an expanding settlement.



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