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Author:
patrice
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2003-09-23 |
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I would like to design bored cast-in-situ piles in weathered rock in South Africa.
Has somebody information on the practice of designing piles as friction piles with no end bearing for diameter < 750 mm (where no manual bottom cleaning is possible!)? Is it a South African Standard requirement? I have never heard of a so restrictive practice in Europe.
Thank you
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Follow-up:
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Author:
Chen Wp
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2003-09-26 |
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Interesting.Is it a code requirement?
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Follow-up:
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Author:
Henry
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2003-09-28 |
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Do a pile testing (PDA or O-cell static load test).
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Follow-up:
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Author:
Cotherion
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2004-02-08 |
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I suppose when you want a safer (or is data is uncertain) practice, then you do not include the end-bearing component of the total capacity. The end bearing will serve to be a bonus. However since no cleaning, the end bearing will expectedly be low due to debris collection.
In practice when i'm not certain, I don't only disregard the end-bearing component, I also consider a smaller perimeter as my effective perimeter for additional safety against installation errors or unexpectant occurances.
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Follow-ups:
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Subject:
pile design with no end bearing for diam< 750 mm? 