Modern Under Pinning; Development, Methods And Typical Examples
The book Modern Under Pinning; Development, Methods And Typical Examples was written by author Lazarus White Here you can read free online of Modern Under Pinning; Development, Methods And Typical Examples book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Modern Under Pinning; Development, Methods And Typical Examples a good or bad book?
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Small orange-peel buckets useful for heavy sand and gravel, especially when operated by winch to cause trouble by removing too much material from the pile and causing a flow of the soil, and conse- quently a settlement of the structure. Care must always be taken not to muck below the bottom of the pile, for, although the pile may drive easier, lost ground may result. Piles up to 30 feet in length are conveniently 54 MODERN UNDERPINNING driven, and when they are driven as deep as it is neces- sa...ry to go, they are concreted. This has to be done with a great deal of care because the water in the pile will wash out the cement, leaving merely sand and gravel in the pile. The best way is to bail or pump the water out of the pile and then concrete. If this is impossible or unsafe, for sometimes the removal of the water causes the soil to rise in the pile, a bottom- dumping bucket is used. When the pile is concreted it is next tested. This means that the concreted piles are jacked down until they give a predetermined resistance of 40, 60, or 80 tons, or more, measured by means of a pressure gauge on the pump.
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