1977-04-01
1978-06-27
Shapiro, Jacob
61 5374, E02D 512, E02D 532
Patent
active
040967034
ABSTRACT:
This invention relates to concrete constructional members for building walls and bulkheads and particularly moles, quay bulkheads, groins or like edifices. Such members hitherto comprised a concrete body having a vertically continuous opening in the central area and having pairs of divergent arms of different length on two opposing sides, the end faces of the shorter pair of arms being capable of being brought into contact with the inner faces of the longer pair of arms on an adjoining constructional member. According to the invention, the constructional member is formed as a concrete part having a height such that it can extend in one piece from the foot of the edifice which is to be built, to at least the vicinity of the surface of the water. Preferably, at its lower end and on the side facing in the direction of construction the member has an extension in the form of an apron which projects beyond the lower end of the member, and which masks the space between said longer arms of the cross-section except for the contact areas for said shorter arms of a succeeding concrete member. Moles, walls, quay bulkheads and like edifices can be made from concrete members as referred to by sinking a plurality of these members vertically to an underlying supporting stratum one after another and against one another with their arms engaging, with said aprons at their bottoms lying in the direction in which the edifice is being constructed whereafter the yielding ground is jetted away from under the concrete member until a firm stratum is reached, by means of a jetting pipe which is passed downwards through the continuous central opening, after which the space formed by the washing out operation is filled with gravel, rubble or the like through said vertical central opening to bed said member in position.
REFERENCES:
patent: 910421 (1909-01-01), Schlueter
patent: 1001963 (1911-08-01), Latham
patent: 1373545 (1921-10-01), Knuth
patent: 2941371 (1960-06-01), Benedict
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