Yoshino Gypsum Co., Ltd.

Tomoegawa Co., Ltd.

Takuji Yamashita

Yusuke Watanabe

Tomoya Hasegawa

Ushio Sudo

Wataru Ohuchi

Kouji Yamakata

Eiichi Kuroda

Takahiro Hebiishi

Mariko Seki

Yukiko Chatani

Yoshikazu Tanaka

Masato Yamaguchi

Tomoki Furue

Shun Tsukamoto

Kiyoshi Hosoi

Yuuya Ishizaka

Construction joint material with adhesive

A clip that fixes a ceiling joist intersecting a ceiling joist receiver to the ceiling joist receiver, includes: a top portion having a width of the ceiling joist receiver; a first hanging portion hanging down from one end of the top portion, and provided with, at a lower portion, first engaging projections extending left and right to engage the ceiling joist; and a second hanging portion hanging down from another end of the top portion, and provided with, at a lower portion, second engaging projections extending left and right to lock the ceiling joist. The first hanging portion has a length longer than that of the second hanging portion, and a recess extending in a direction toward the second hanging portion is provided at an intermediate position of the first hanging portion.

Clip, ceiling base, and method for constructing same

A fireproof covered structure for covering a penetration part formed in a fireproof beam of a wooden building to make the penetration part fireproof, wherein a tubular fireproof covering material is attached to the penetration part while covering an inner peripheral surface of the penetration part. The tubular fireproof covering material is formed by stacking a plurality of gypsum board pieces cut out from commercially available gypsum boards of thicknesses of 9.5 mm to 25.5 mm, in the thickness direction and unitarily connecting the gypsum board pieces. The tubular fireproof covering material is inserted into and attached to the penetration part such that a connecting portion That connects gypsum board pieces That are adjacent in the stacking direction is disposed at a boundary portion between a structural member and a covering member of the fireproof beam, or at a portion close to the boundary portion.

Fireproof coated structure for penetration part

A penetration part fireproof covering material used when a penetration part covered for fireproof is formed in a fireproof beam that is a fireproof constructional member that constitutes a wooden building, wherein the penetration part fireproof covering material is formed to have a tubular shape by stacking a plurality of gypsum board pieces () formed from gypsum boards in a thickness direction and unitarily connecting the plurality of gypsum board pieces. The penetration part fireproof covering material is formed to have the tubular shape by stacking the plurality of gypsum board pieces that preferably have an annular shape and are cut out from commercially available gypsum boards having thicknesses of 9.5 mm to 25.5 mm while fixing the plurality of gypsum board pieces to each other preferably using metal fasteners such as staples, and unitarily connecting the plurality of gypsum board pieces.

Penetration part fireproof coating material

Construction clip

Disclosed is a dry gypsum composition containing hemihydrate gypsum, at least one pigment and a crystal habit modifier. The crystal habit modifier is at least one compound selected from the group consisting of sulfate salts, carboxylate salts, carbonate salts and inorganic chlorides, and a content of the at least one compound is in a range of 0.1 to 5 parts by mass per 100 parts by mass of the hemihydrate gypsum, whereby upon hydration of the hemihydrate gypsum into dihydrate gypsum, the dihydrate gypsum is controlled to become plate crystals having an aspect ratio of 1 to 9. A gypsum-based coating formulation making use of the dry gypsum composition is also disclosed.

Dried gypsum composition and gypsum-based coating

Growing community of inventors

Tokyo, Japan

Takuji Yamashita