Underground construction

Details Underground construction Underground construction

1997-03-21

1998-11-10

Canfield, Robert

Static structures (e.g., buildings)

Specified terranean relationship

Subterranean enclosure with portal opening; e.g., storm or...

52174, 52175, 52274, E02D 2900

Patent

active

058326804

ABSTRACT:
An underground construction has: a circumference wall forming therein a cone shaped space; plural support members located at the circumference of the cone shaped space at vertically the same height; floor construction bodies each having plural bed beams and a floor portion, the ends of the bed beams being supported by the support members, and the floor portions being disposed in the middle of the cone shaped space at a fixed interval from the circumference wall.
No pillars for supporting the floors are needed, thereby leaving a maximum clear space on the floors for use.

REFERENCES:
patent: 3396502 (1968-08-01), Contevita
patent: 3686816 (1972-08-01), Erbil
patent: 4033078 (1977-07-01), Prewer
patent: 4608785 (1986-09-01), Rhodes et al.
patent: 5007244 (1991-04-01), Mori
patent: 5046910 (1991-09-01), Tokuhiro et al.

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