From installation manner of the joist receiving metallic parts for the false floor and the joist receiving metallic parts for the false floor and the bleeder which is provided in the external wall of installation mannered null

摘要

PROBLEM TO BE SOLVED: To make the floor of a wooden building as a double floor capable of improving the circulation of air in a room to produce a healthy and comfortable habitable space by communicating with an attic space from an exterior wall aeration layer and a partition wall aeration layer by making the air flow through an aeration layer of the double floor.;SOLUTION: A floor joist hanger 1 of a floor joist 5 supporting an upper floor board 21 forming the aeration layer 6 of the double floor 9 is so constituted that it has a plurality of semi-circular notches 2a and that a columnar member 3 is erected on the upper surface of a lower plate 2 having a plurality of screw holes 2b. It is so constituted that an upper plate 4 having a plurality of screw holes 2b by meeting at right angles with the columnar member 3 is welded to the upper end of the columnar member 3, two surfaces opposed to each other of the columnar member 3 are extended to respectively provide a projected edge 3a having the screw hole 2b to fix to the upper surface of a lower floor board 20 from a plurality of screw holes 2b of the lower plate 2 with a screw 2c, the floor joist 5 is fitted to the upper end of the columnar member 3 and that the columnar member 3 can be fixed to the floor joist 5.;COPYRIGHT: (C)2005,JPO&NCIPI