Three-dimensional construction element comprising a body of gene

Details Three-dimensional construction element comprising a body of gene Three-dimensional construction element comprising a body of gene

1977-04-07

1979-07-03

Perham, Alfred C.

Static structures (e.g., buildings)

Preassembled subenclosure or substructure section of unit or...

With retaining or attaching means

52 797, 52 7914, 52143, 52227, 52589, 52745, E04B 1348

Patent

active

041596021

ABSTRACT:
A three-dimensional construction element comprising a body of generally polyhedral form with an aperture therethrough. Said element comprises at least one peripheral rib forming a statically indeterminate frame the neutral axis of which is located in a plane parallel to the planes defining the ends of the element having the aperture therethrough, and in that the grooves located beside the rib form, separately or together, a geometric figure which is complementary to the figure formed by the rib. (FIG. 1).

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patent: 3982366 (1976-09-01), Haapala
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