Static structures (e.g. – buildings) – Multiroom or level – Partition secured to and crossed by preconstructed barrier
Patent
1996-05-01
1998-05-12
Safavi, Michael
Static structures (e.g., buildings)
Multiroom or level
Partition secured to and crossed by preconstructed barrier
52265, 52269, 524073, 524811, E04B 228
Patent
active
057491879
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a partition wall whose top end board is a hard gypsum sheet as a gypsum based construction material and, in particular, to a dry party wall structure.
2. Discussion of the Background
A gypsum board as a representative of the gypsum based construction material has been used in a variety of applications. The gypsum board is in general a plate-like member comprising a gypsum core which is prepared by kneading hemi-hydrate plaster and water and hardening the mixture and which is covered with base paper, and excellent in, for instance, fire protecting performance, sound insulation properties, installation properties and cost performance. Therefore, it has widely been used as an interior material for buildings. More specifically, it has widely been used as a partition wall, in particular, a dry party wall for high-rise buildings and super high-rise buildings which have recently been popularized rapidly and it has been proved to be excellent in, for instance, aptitude for construction processes, light-weight properties and vibration-follow-up properties.
The dry party wall may separately be set up after the substrate works and during the interior finish works and can be divided into those having a stud structure which are fitted to, for instance, light-weight steel frames (upper and lower runners) secured to the substrate and those having a non-stud structure free of such steel frames. In any case, either of them is completed by locating basic face materials such as reinforced gypsum boards, extrusion molded plates of gypsum and calcium silcate plates, on both sides of each corresponding frame of a substrate, in such a manner that a material having sound insulation properties such as glass wool lies between the face materials; fixing the face materials to the frame by the use of, for instance, tapping screws to form a wall; and then covering the both outer faces of the walls with top end boards through the aid of a paste or optionally simultaneous use of staples, nails or screws.
Such a dry party wall not only serves to separate from a neighboring house, but also has such roles that it can ensure a living environment guaranteeing a comfortable life and that it can protect life and property from disasters (such as a fire). Accordingly, it should satisfy various requirements such as fire protecting properties, sound insulation properties, deformation-follow-up properties, out-of-plane flexural rigidity and hardness. In addition to these required characteristic properties, there has been desired for the redution of the wall thickness and the weight of the dry party wall in order to increase the habitable area as multi-storied and super multi-storied buildings have been popularized.
For this reason, the dry party wall which makes use of a usual gypsum board (having a specific gravity ranging from 0.65 to 0.9) as the top end board is still insufficient in hardness and should further be reduced in the thickness and weight thereof. Accordingly, there has been desired for the development of a partition wall, in particular, a dry party wall structure.
SUMMARY OF THE INVENTION
It is thus an object of the present invention to provide a partition wall, in particular, a dry party wall in which a gypsum based construction material is used as the top end board, which is sufficient in, for instance, fire protecting properties, sound insulation properties, deformation-follow-up properties, out-of-plane flexural rigidity and hardness, which is light weight and whose wall has a reduced thickness.
The present invention has been completed on the basis of the finding that the foregoing problems can effectively be solved by the use of hard gypsum sheets each of which comprises fibers dispersed within a gypsum core thereof, as top end boards for a partition wall, in particular, a dry party wall.
More specifically, the present invention provides a partition wall characterized in that studs are secured to upper and lower runners fitted to a substrat
REFERENCES:
patent: 3305993 (1967-02-01), Nelsson
patent: 3559355 (1971-02-01), Day, Jr.
patent: 3611653 (1971-10-01), Zinn
patent: 4152878 (1979-05-01), Balinski
patent: 4306396 (1981-12-01), Iotti
patent: 4391073 (1983-07-01), Mollenkopf et al.
patent: 4593508 (1986-06-01), Curatolo
patent: 4727692 (1988-03-01), Glockenstein
patent: 5009043 (1991-04-01), Kurrasch
patent: 5148645 (1992-09-01), Lehnert et al.
Hasegawa Tomoya
Uchida Masayuki
Umehara Kazuyuki
Safavi Michael
Yoshino Gypsum Co. Ltd.
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