SUPPORT LEG AND DOUBLE FLOOR STRUCTURE

PROBLEM TO BE SOLVED: To provide a support leg which can achieve the low-flooring of a double-floor, and can improve workability at construction by enlarging a height adjustment range, and a double-floor structure.SOLUTION: A support leg 10 comprises: a floor contact pedestal 11 arranged on a foundation floor 1 such as a concrete slab; a support bolt 12 vertically supported to the floor contact pedestal 11; a panel receiver 13 which has a female screw part 65a engaged with the support bolt 12, and vertically moves accompanying the rotation motion of the female screw part; and an adapter plate 14 which is attached on the panel receiver 13 in a free stacking manner, and can adjust a height of a panel receiver face. The panel receiver 13 has a protrusion 61 which is protrusively deformed toward an upper part, at least a part of the floor contact pedestal 11 is accommodated in a recess 63 which is formed at a rear face of the protrusion 61 when approximating the floor contact pedestal 11, and an insertion hole 41 which allows the insertion of the protrusion 61 is formed at the adapter plate 14. 【課題】二重床の低床化を図ることができるとともに、高さ調整範囲を大きくして、施工時の作業性を向上させることができる支持脚及び二重床構造を提供する。【解決手段】支持脚１０は、コンクリートスラブ等の基礎床１上に配設される接床台座１１と、接床台座１１に垂直に支持される支持ボルト１２と、支持ボルト１２に係合する雌ねじ部６５ａを有してその回転動作に伴い上下移動するパネル受け１３と、パネル受け１３の上に積み重ね自在に取り付けられパネル受け面の高さ調整を可能とするアダプタープレート１４とを備え、パネル受け１３は、上方に向かって凸状に変形した凸部６１を有し、接床台座１１に近接させたときに凸部６１の裏面に形成される凹部６３に接床台座１１の少なくとも一部を収納可能に設けられおり、アダプタープレート１４は、凸部６１を挿通する貫通孔４１が設けられている。【選択図】 図２