| 摘要 |
A precast concrete building element and structure constructed from such elements, the elements being designed so that either face of the element can be used in th e design of the construction of retaining walls, foundations, posts or other structures, wherein one face of the element gives the appearance of a dual vertical octagon shap e, and the other face of the element is vertically flat faced, with a 45 degree vertically angled comer on each end of the element. Thus, the overall wall or structure gives the appearance of repeating vertical part octagonal shapes. Through various configurations of such a design, arrangements of elements to form structures which have an internal angle of 45, 90 and 135 degrees are possible. The structure can be designed so that it can be stacked straight up, in that each element comprising the structure has a groove or channel on a bottom of the element, which internally extends a length of the element, and a top surface of the element has two button shaped protrusions thereon. The protrusions are designed to allow each element to lock or connect into t he groove or channel of another element placed thereon.
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