Abstract: A vibration damper comprises a first plate 11 that is fixed to one framework member 51, a second plate 13 that is fixed to another framework member 53, and an elastic material 15 that is filled in the interstices between the first plate 11 and the second plate 13. A first clearance W1 is formed between the another framework member 53 and a first fixing portion 21, and a second clearance W2 is formed between the first framework member 51 and a second fixing portion 29. The first plate 11 is made of a steel plate that is formed directing from the first fixing portion 21 to the second fixing portion 29, and the second plate 13 is made of a steel plate that is formed directing from the second fixing portion 29 to the first fixing portion 21. A space portion 50 constituted by the first clearance W1, the second clearance W2, the first plate 11, and the second plate 13 has a dimension which is at least sufficient for insertion of a joist 57 therein.

Abstract: A vibration damper comprises a first plate 11 that is fixed to one framework member 51, a second plate 13 that is fixed to another framework member 53, and an elastic material 15 that is filled in the interstices between the first plate 11 and the second plate 13. A first clearance W1 is formed between the another framework member 53 and a first fixing portion 21, and a second clearance W2 is formed between the first framework member 51 and a second fixing portion 29. The first plate 11 is made of a steel plate that is formed directing from the first fixing portion 21 to the second fixing portion 29, and the second plate 13 is made of a steel plate that is formed directing from the second fixing portion 29 to the first fixing portion 21. A space portion 50 constituted by the first clearance W1, the second clearance W2, the first plate 11, and the second plate 13 has a dimension which is at least sufficient for insertion of a joist 57 therein.

Abstract: Floor panel support legs support floor panels atop a floor slab and a double floor device uses such floor panel support legs. Each floor support leg is constituted by a pair of cylindrical first and second pedestal members and a fixing member for fixing the relative position between the first and second pedestal members, the first and second pedestal members having bottoms at their axial one end portions and thread portions at their inner and outer circumferential surfaces respectively so that they are thread-engaged with each other through their thread portions. The axial height of the support leg is set by the degree of thread engagement between the first and second pedestal members and the thus set height is fixed by the fixing member. Such support legs are arranged between a floor slab and floor panels at butted portions of the floor panels to support the floor panels to thereby constitute a double floor device.

Abstract: A stanchion unit assembly for supporting floor boards comprising: a plurality of vertical stanchion units including rests which constitute the upper portions of the vertical stanchion units and support the floor boards, and base plates which constitutes the lower portions of the vertical stanchion units and are disposed in contact with a floor foundation; a plurality of oblique member support stanchion units including rests which constitute the upper portions of the oblique member support stanchion units and support the floor boards, and base plates which constitute the lower portions of the oblique member support stanchion units and are provided with oblique member support parts; a plurality of floating rests supporting the floor boards on the tops of the floating rests and provided with oblique member support parts at the lower portions of the floating rests; and a plurality of oblique members extending from the oblique member support parts of each of the oblique member support stanchion units to those of t

Abstract: A stanchion unit assembly for supporting floor boards comprising: a plurality of vertical stanchion units including rests which constitute the upper portions of the vertical stanchion units and support the floor boards, and base plates which constitutes the lower portions of the vertical stanchion units and are disposed in contact with a floor foundation; a plurality of oblique member support stanchion units including rests which constitute the upper portions of the oblique member support stanchion units and support the floor boards, and base plates which constitute the lower portions of the oblique member support stanchion units and are provided with oblique member support parts; a plurality of floating rests supporting the floor boards on the tops of the floating rests and provided with oblique member support parts at the lower portions of the floating rests; and a plurality of oblique members extending from the oblique member support parts of each of the oblique member support stanchion units to those of t