Kawasaki Steel Corporation

Shimizu Construction Co., Ltd.

Mitsubishi Jukogyo Kabushiki Kaisha Shimizu Construction Co.

Hiroki Muramoto

Toshihiko Hirama

Shuji Okuda

Kenichi Sugizaki

Hajime Nakajima

Nobuo Kato

Takenori Kumagai

Masato Kawaguchi

Kusuo Honda

Hideo Shimomura

Yasuo Kuno

In an openable roof apparatus for a space, a stationary support structure is arranged about the space. A movable roof structure is supported by the stationary support structure and is movable with respect thereto. The movable roof structure having a first movable roof section and a second swing roof section. The second swing roof section is movable angularly about the central axis of the space with respect to the first movable roof section and is capable of being overlapped therewith. A guide arrangement is arranged on the stationary support structure and extends perpendicularly to a central axis of the space. The first movable roof section and the second swing roof section, which are overlapped with each other, are movable along the guide arrangement toward and away from the space.

Openable roof apparatus

Trussed girder, roof framing using the trussed girder and method of constructing the roof framing of a building using the trussed girder. In the trussed girder, an upper chord and a lower chord are jointed through lattice members. The trussed girder includes: a prestressing steel member; and an attaching mechanism for attaching the prestressing steel member to at least one of both the upper and lower chords to longitudinally extend under tension for providing prestress to the trussed girder.

Trussed girder, roof framing using the trussed girder and method of

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Tokyo, Japan

Shuji Okuda