Beam for building, and building

Abstract

A beam for a building includes: a wooden beam body having an upper surface and a lower surface; a notch portion arranged in the beam body; and a reinforcing portion that reinforces a periphery of the notch portion. The notch portion is arranged so as to notch the upper surface or the lower surface. The reinforcing portion reinforces an adjacent portion of the beam body adjacent to the notch portion.

1 . A building beam, comprising:
 a wooden beam body including an upper surface and a lower surface;   a notch portion arranged in the beam body; and   a reinforcing portion reinforcing a periphery of the notch portion, wherein   the notch portion is cut out from the upper surface or the lower surface, and   the reinforcing portion reinforces an adjacent portion adjacent to the notch portion in the beam body.   
     
     
         2 . The building beam according to  claim 1 , wherein
 the reinforcing portion includes a bolt,   the bolt is engaged with a through-hole extending through the adjacent portion in a vertical direction, and   the bolt is arranged in the through-hole of the adjacent portion.   
     
     
         3 . The building beam according to  claim 1 , wherein
 the reinforcing portion includes a bolt that includes a shaft portion and a head portion, and a plate that is arranged on an upper surface or a lower surface of the adjacent portion,   the bolt is inserted through a hole in the plate so that the head portion contacts the plate, and the bolt is engaged with a through-hole extending through the adjacent portion in a vertical direction, and   the shaft portion of the bolt is arranged in the through-hole of the adjacent portion.   
     
     
         4 . The building beam according to  claim 1 , wherein
 the reinforcing portion includes a first plate arranged on an upper surface of the adjacent portion, a second plate arranged on a lower surface of the adjacent portion, and a connecting member extending through the adjacent portion and connecting the first plate and the second plate.   
     
     
         5 . The building beam according to  claim 1 , wherein
 the reinforcing portion includes a first through member extending through the adjacent portion in a vertical direction, and a second through member extending through the first through member and the adjacent portion in a manner intersecting an axial direction of the first through member.   
     
     
         6 . A building, comprising:
 beams, each being the building beam according to  claim 1 , wherein   the beams are connected to a girder to be parallel to each other,   the beams each include the notch portion in a lower surface of an end of the beam connected to the girder, and   the notch portions are arranged along an extension direction of the girder.   
     
     
         7 . A building, comprising:
 beams, each being the building beam according to  claim 1 , wherein   the beams are connected to a girder to be parallel to each other,   the beams each include the notch portion in an upper surface of the beam, and   the notch portions support a sunken floor.   
     
     
         8 . A building, comprising:
 beams, each being the building beam according to  claim 1 , wherein   the beams are arranged parallel to each other and extend from an interior space to an exterior extension throughout, and   the beams each include the notch portion in an upper surface of the beam,   the notch portions are arranged at a part corresponding to the exterior extension, and   the notch portions support a floor of the exterior extension with a drainage space located in between.