oa Civil Engineering = Siviele Ingenieurswese - A preliminary theory for the design of underreamed piles
In a group of houses with experimental underreamed pile foundation at Leeuhof, Vereenigirig, it was observed that some 9 in diameter underreamed piles' founded at a depth of 30 ft had failed in tension, whereas similar piles founded at 20 ft and 25 ft showed little sign of distress. As a result of this observation an investigation of the tensile forces likely to occur in such piles has been undertaken. An attempt has been made to relate these forces with the properties of the soil at Leeuhof, and to develop a design procedure which will permit engineers to calculate the probable tensile forces which will develop in underreamed piles.
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