Fireproof partition wall

Abstract

A fire-resistant partition wall includes multiple studs, and first and second walls. First and second walls are respectively provided as a single-layer wall on both surfaces of the fire-resistant partition wall. First and second walls are each formed of multiple surface members arranged vertically and horizontally. Vertical and lateral joints are formed in each of first and second walls. The studs are on a back side of vertical joints. A joint-base member having fire-blocking capability is provided at lateral joints. The joint-base member includes back-piece and projecting-piece projecting in thickness direction of gypsum boards. A transverse cross-section of the joint-base member has T-shape. The surface members, joint-base member, and studs are not fastened with a common fixing member. All of the surface members are fastened to the studs with first-fixing member. One of the two surface members next to each other vertically is fastened to the back-piece with second-fixing member.

1 . A fire-resistant partition wall, comprising:
 multiple studs installed at predetermined intervals; and   a first wall and a second wall that are a pair of walls provided across the studs from each other, the first wall and the second wall being respectively provided as a single-layer wall on both surfaces of the fire-resistant partition wall, the first wall and the second wall each being formed of multiple surface members of gypsum boards next to each other horizontally and vertically, and vertical joints and lateral joints being formed in each of the first wall and the second wall, wherein   the studs are on a back side of the vertical joints,   a joint base member having a fire blocking capability is provided at the lateral joints, the joint base member including a back piece contacting a back surface of the surface members and a projecting piece projecting from the back piece in a thickness direction of the surface members, and a transverse cross section of the joint base member perpendicular to a longitudinal direction thereof having a T-letter shape,   the surface members, the joint base member, and the studs are not fastened with a common fixing member,   all of the surface members are fastened to the studs with a first fixing member, and   one of two surface members next to each other vertically is fastened to the back piece with a second fixing member, the two surface members being of the multiple surface members.   
     
     
         2 . The fire-resistant partition wall according to  claim 1 , wherein
 multiple sets each being a set of the two surface members next to each other vertically are next to each other horizontally, and   only a lower surface member of the two surface members in each of the sets is fastened to the back piece.   
     
     
         3 . The fire-resistant partition wall according to  claim 1 , wherein
 multiple sets each being a set of the two surface members next to each other vertically are next to each other horizontally, and   only an upper surface member of the two surface members in each of the sets is fastened to the back piece.   
     
     
         4 . The fire-resistant partition wall according to  claim 1 , wherein
 multiple sets each being a set of the two surface members next to each other vertically are next to each other horizontally, and   one of two sets next to each other, the two sets being of the multiple sets, is such that an upper surface member of the two surface members is fastened to the back piece, and another of the two sets is such that a lower surface member of the two surface members is fastened to the back piece.   
     
     
         5 . The fire-resistant partition wall according to  claim 1 , wherein
 the second fixing member is a member driven from a wider-surface side of the surface members.   
     
     
         6 . The fire-resistant partition wall according to  claim 1 , wherein
 the surface members are reinforced gypsum boards, and have a thickness of 25 mm.   
     
     
         7 . The fire-resistant partition wall according to  claim 2 , wherein
 the second fixing member is a member driven from a wider-surface side of the surface members.   
     
     
         8 . The fire-resistant partition wall according to  claim 3 , wherein
 the second fixing member is a member driven from a wider-surface side of the surface members.   
     
     
         9 . The fire-resistant partition wall according to  claim 4 , wherein
 the second fixing member is a member driven from a wider-surface side of the surface members.   
     
     
         10 . The fire-resistant partition wall according to  claim 2 , wherein
 the surface members are reinforced gypsum boards, and have a thickness of 25 mm.   
     
     
         11 . The fire-resistant partition wall according to  claim 3 , wherein
 the surface members are reinforced gypsum boards, and have a thickness of 25 mm.   
     
     
         12 . The fire-resistant partition wall according to  claim 4 , wherein
 the surface members are reinforced gypsum boards, and have a thickness of 25 mm.