JPH02176067A - Construction method of free access floor - Google Patents

Abstract

PURPOSE:To prevent the unconformity of a bearing surface of a floor panel with the floor panel by loading a panel receiving bench to a height control leg member, controlling a height of the receiving bench, fixing a receiving bench base plate to a standard floor, fixing the height of the receiving bench and fixing the floor panel. CONSTITUTION:A reference line 30 is drawn by inking, and an anchor bolt 11 of an anchor clamping means 28 is buried into the position. Then, a bolt insertion hole of the receiving bench base plate 4 is interlocked with the bolt 11, and the bolt 11 is screwed and fitted in a nut 12 to place the base plate 4 on a standard floor 3 in a state of fixing temporarily. After that, a swivel locknut 7 and a height control leg member 6 are respectively screwed and fitted in a male screw 5a of a bearing shaft 5, loading the panel receiving bench 8 to the leg member 6 from the top, and the movement of the height control leg member 6 is controlled to adjust a rough height. The position of the base plate 4 and the height of the panel receiving bench are adjusted, all bearing devices 1 are arranged at equal intervals and at right angles and, at the same time, the surfaces of all panel receiving plates 15 are placed on the same level.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、フリーアクセスフロアの施工方法に係わり、
詳細には取付治具を用いて支持装置の位置出しと高さ調
整を行うようにしたフリーアクセスフロアの施工方法に
関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a construction method for a raised floor,
Specifically, the present invention relates to a method for constructing a free access floor in which a mounting jig is used to position and adjust the height of a support device.

〈従来の技術） コンクリート床等の基準床面の上方に多数のフロアパネ
ルを敷設し、フロアパネルと基準床面との間にケーブル
や換気ダクト等を配役できる自由空間を確保した二重床
構造、すなわちフリーアクセスフロアが知られている。(Conventional technology) A double floor structure in which a number of floor panels are laid above a reference floor surface such as a concrete floor, and a free space is secured between the floor panels and the reference floor surface in which cables, ventilation ducts, etc. can be placed. , that is, a raised floor is known.

前記フリーアクセスフロアの施工に際しては、特開昭６
１−１７２９６０号公報に開示したように、棒状の連結
手段Ａによって支持装置Ｂ同士を互いに連結していく施
工方法が知られているが、この方法によれば、基準床面
Ｃに最初に固定されるべき支持装置Ｂの位置と延設方向
が決まれば、他の支持装置Ｂは前記連結手段Ａで順次連
結されていくことによって所定位置に位置決めされて固
定される（第６図参照）。When constructing the above-mentioned raised access floor,
As disclosed in Japanese Patent No. 1-172960, there is a known construction method in which supporting devices B are connected to each other by rod-shaped connecting means A. Once the position and extension direction of the supporting device B to be installed are determined, the other supporting devices B are successively connected by the connecting means A, thereby being positioned and fixed at a predetermined position (see FIG. 6).

（発明が解決しようとする課題） しかしながら、前記施工方法では、支持装置の間隔を基
準床面に沿って一定に保持するだけであるから、支持装
置の配置が菱形状になったり、あるいは、基準床面の不
陸等によって支持装置が傾斜することにより、フロアパ
ネルの支持面がフロアパネルに正確に合致しなくなると
いう問題があった６ そこで、本発明は、支持装置の位置決めと高さ調整が容
易に行えて、フロアパネルの支持面を正確に形成するこ
とができるフリーアクセスフロアの施工方法を提供する
ことを目的としている。(Problem to be Solved by the Invention) However, in the construction method described above, since the spacing between the supporting devices is simply maintained constant along the reference floor surface, the arrangement of the supporting devices may become diamond-shaped or There has been a problem in that the support surface of the floor panel does not match the floor panel accurately due to the inclination of the support device due to unevenness of the floor surface, etc. 6 Therefore, the present invention has been proposed to improve the positioning and height adjustment of the support device. It is an object of the present invention to provide a method for constructing a raised floor that is easy to perform and can accurately form the supporting surface of a floor panel.

（課題を解決するための手段） 上記目的を達成するため、本発明のフリーアクセスフロ
アの施工方法は、 基準床面上に複数のフロアパネルを支持装置を介して敷
設して、前記基準床面とフロアパネルとの間に自由空間
を確保するようにしたフリーアクセスフロアの施工方法
において、 前記基準床面に配置された受台基板の支持軸に高さ調整
脚部材を螺合し、該高さ調整脚部材にパネル受け台を装
着する工程と、 取り外し可能な取付治具を隣接する前記支持装置間に跨
架し、前記受台基板の固定位置及び前記パネル受け台の
高さ調整を行う工程と、前記受台基板を前記基準床面に
ボルト、ナツトからなるアンカー締結手段により固定す
る工程と、前記支持軸に螺合された回り止めナツトで高
さ調整脚部材の位置決めをしてパネル受け白の高さを固
定する工程と、 前記フロアパネルを前記パネル受け台に載置し、パネル
押さえにより固定する工程と、 を含むことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the method for constructing a raised floor of the present invention comprises: laying a plurality of floor panels on a reference floor surface via a support device; In the method of constructing a free access floor that secures a free space between the base plate and the floor panel, a height adjusting leg member is screwed to the support shaft of the pedestal board placed on the reference floor surface, and the height a step of attaching a panel holder to the height adjustment leg member; and a step of straddling a removable mounting jig between the adjacent support devices to adjust the fixing position of the pedestal board and the height of the panel holder. a step of fixing the pedestal board to the reference floor surface using anchor fastening means consisting of bolts and nuts; and positioning the height adjusting leg member with a locking nut screwed to the support shaft, and fixing the height adjusting leg member to the base floor surface. The present invention is characterized in that it includes the steps of: fixing the height of the receiver; and placing the floor panel on the panel holder and fixing it with a panel presser.

（実施例） 以下、本発明の一実施例を図面を参照しつつ説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.

この実施例では低床型のフリーアクセスフロア１０に本
発明の施工方法を適用した場合を示している。フリーア
クセスフロア１０の施工に際しては、コンクリート床等
の基準床面３上に敷設されるフロアパネル２と、該フロ
アパネル２を支持する支持装置１と、支持装置１の位置
決めと高さ調整をする取付治具１８とが用意される。先
ず、施工に使用される支持装置１、フロアパネル２、及
び取付治具１８の一例について説明する。This embodiment shows a case where the construction method of the present invention is applied to a low-level free access floor 10. When constructing the free access floor 10, the floor panel 2 laid on the reference floor surface 3 such as a concrete floor, the support device 1 that supports the floor panel 2, and the positioning and height adjustment of the support device 1 are carried out. A mounting jig 18 is prepared. First, an example of the support device 1, floor panel 2, and mounting jig 18 used for construction will be described.

支持装置ｌは、基準床面３に固定される受台基板４と、
受台基板４上に立設された支持軸５の雄ネジ部５ａに螺
合される高さ調整脚部材６と、高さ調整脚部材６のフラ
ンジ部６ａの下面に当接される回り止めナツト７と、高
さ調整脚部材６ｃこ装着され、フロアパネル２のコーナ
一部２ａが載置されるパネル受け台８と、パネル受け台
８との間でフロアパネル２のコーナ一部２ａを締め付は
固定するパネル押さえ９とで構成されている。The support device l includes a pedestal board 4 fixed to a reference floor surface 3;
The height adjusting leg member 6 is screwed onto the male threaded portion 5a of the support shaft 5 erected on the pedestal board 4, and the detent is in contact with the lower surface of the flange portion 6a of the height adjusting leg member 6. The corner part 2a of the floor panel 2 is held between the nut 7 and the panel holder 8 on which the height adjustment leg member 6c is attached and on which the corner part 2a of the floor panel 2 is placed. The tightening device is composed of a panel retainer 9 for fixing.

個々の要素について詳細に説明すると、受台基板４は、
正方形状に形成されると共に対向する二辺部にアンカー
ボルト１１と遊嵌状に係合するボルト挿通孔４Ｃが設け
られ、また、他の二辺部には膨出状補強部４ｄが突出形
成されている。この中央部に形成された膨出状の取付部
４ｂには支持軸５が立設され、上部の外周面に高さ調整
脚部材６と回り止めナツト７とが螺合される雄ネジ部５
ａが形成されている。受台基板４に対して上下方向に移
動可能な高さ調整脚部材６は、内周面に支持軸５の雄ネ
ジ部５ａと螺合する雌ネジ部６ｃが形成された筒状部６
ｄと、その上端に設けられた回動操作用の工具が係合さ
れるナツト状の固定部６ｂと、下端に設けられたパネル
受け台８を支持するフランジ部６ａとからなる。また、
回り止めナツト７には、板状あるいは六角ナツト等が使
用され、高さ調整脚部材６のフランジ部６ａの下面に密
着状に当接される。高さ調整脚部材６に装着されるパネ
ル受け台８は、フロアパネル２のコーナ一部２ａが載置
される正方形状のパネル受け板１５と、このパネル受け
板１５の中央部から一体的に下方に伸長し、高さ調整脚
部材６の筒状体６ｄと嵌合されると共にフランジ部６ａ
に下端が支持される筒状部１６とから構成されている。To explain the individual elements in detail, the pedestal board 4 is as follows:
It is formed in a square shape and has a bolt insertion hole 4C on two opposing sides that loosely engages with the anchor bolt 11, and a protruding reinforcing portion 4d on the other two sides. has been done. A support shaft 5 is erected on the bulging mounting portion 4b formed at the center, and a male screw portion 5 has a height adjusting leg member 6 and a locking nut 7 screwed onto the outer peripheral surface of the upper part.
a is formed. The height adjustment leg member 6, which is movable in the vertical direction with respect to the pedestal board 4, has a cylindrical portion 6 formed with a female threaded portion 6c screwed into the male threaded portion 5a of the support shaft 5 on its inner peripheral surface.
d, a nut-shaped fixing part 6b provided at its upper end to which a rotating operation tool is engaged, and a flange part 6a provided at its lower end to support a panel holder 8. Also,
The locking nut 7 is a plate-shaped nut, a hexagonal nut, or the like, and is brought into close contact with the lower surface of the flange portion 6a of the height adjusting leg member 6. The panel holder 8 attached to the height adjustment leg member 6 is integrated with a square panel holder 15 on which the corner part 2a of the floor panel 2 is placed, and from the center of this panel holder 15. The flange portion 6a extends downward and is fitted into the cylindrical body 6d of the height adjustment leg member 6.
and a cylindrical portion 16 whose lower end is supported.

そして、パネル受け板１５の四辺部の中央には、取付治
具１８の端部が嵌合される取付部１５ｂが設けられ、そ
の案内状の凹溝１５ｃと挿入孔１５ｄは、嵌合される取
付治具１８の突出方向を正確に保持できるように形成さ
れている。A mounting part 15b into which the end of the mounting jig 18 is fitted is provided at the center of the four sides of the panel receiving plate 15, and the guide-like groove 15c and the insertion hole 15d are fitted into the mounting part 15b. It is formed so that the protruding direction of the mounting jig 18 can be held accurately.

フロアパネル２は、正方形状に形成されていて、コーナ
一部２ａには四分円形状の段部２Ｃと切欠部２ｄとが設
けられ、その裏面にはパネル受け台８の突起１５ａと係
合する四部２ｂが形成されている。このフロアパネル２
は、コーナ一部２ａがパネル受け台８に載置され、ネジ
式のパネル押さえ９によって締め付は固定される。また
、ワンタッチ式のパネル押さえを使用することもできる
。The floor panel 2 is formed in a square shape, and a corner portion 2a is provided with a quadrant-shaped step portion 2C and a cutout portion 2d, and the back surface thereof is engaged with a protrusion 15a of the panel holder 8. Four portions 2b are formed. This floor panel 2
The corner part 2a is placed on a panel holder 8, and the screw-type panel holder 9 tightens the panel. Additionally, a one-touch panel holder can also be used.

隣接する支持装置１間に着脱自在に跨架される取付治具
１８は、両端部が直角に折り曲げられた板部材であって
、長さ寸法及び直角度の精度を高く形成されている。The mounting jig 18, which is removably straddled between adjacent support devices 1, is a plate member whose both ends are bent at right angles, and is formed with high precision in length and perpendicularity.

次に、施工方法について説明すると、先ず基準床面３の
受台基板４が固定される位置、すなわち、フリーアクセ
スフロア１０の中央部においては互いに隣接する四部の
フロアパネル２のコーナ一部２ａが集合する位置、また
、壁面側においては互いに隣接する二枚のフロアパネル
２のコーナ一部２ａが集合する位置を求めるために、基
準線３０を墨打ちして描いていく６次いで、その所定位
置にアンカー締結手段２８のアンカーボルト１１を埋め
込んでいくが、第３図に示すように、隣接するアンカー
締結手段２８の固定方向が直交状になるように配設する
。ここで言う固定方向とは、−組（二個）のアンカー締
結手段２８を結んだ直線について言う、このような構成
により、全体としてアンカー締結手段２８の方向性が均
等化され、いかなる方向の荷重が作用しても充分な強度
を維持することができる。Next, to explain the construction method, first, at the position where the pedestal board 4 of the reference floor surface 3 is fixed, that is, in the center of the raised floor 10, the corner portions 2a of the four adjacent floor panels 2 are In order to determine the gathering position, and also the position where the corner portions 2a of two adjacent floor panels 2 on the wall surface side gather, a reference line 30 is marked and drawn.Next, its predetermined position is drawn. The anchor bolts 11 of the anchor fastening means 28 are embedded in the anchor bolts 11 of the anchor fastening means 28, and as shown in FIG. The fixing direction here refers to a straight line connecting two pairs of anchor fastening means 28. With this configuration, the directionality of the anchor fastening means 28 as a whole is equalized, and the load in any direction is Sufficient strength can be maintained even under the influence of

そして、このアンカーボルト１１に受台基板４のボルト
挿通孔４Ｃを係合すると共にアンカーボルト１１にナツ
ト１２を螺合して、受台基板４を基準床面３に仮固定の
状態で配置する。この時、ナツト１２と受台基板４との
間に長形状の座板１３を介在させて受台基板４を補強す
る。なお、基準床面３に゛不陸がなく平面状態が保障さ
れている場合には、この受台基板４を仮固定することな
く、直接固定してもよい。この後、受台基板４に立設さ
れた支持軸５の雄ネジ部５ａに、回り止めナツト７と高
さ調整脚部材６をそれぞれ螺合し、この高さ調整脚部材
６にパネル受け台８を上方から装着し、高さ調整脚部材
６を回動操作して大体の高さ調整をする。Then, the anchor bolt 11 is engaged with the bolt insertion hole 4C of the pedestal board 4, and the nut 12 is screwed onto the anchor bolt 11, so that the pedestal board 4 is temporarily fixed on the reference floor surface 3. . At this time, an elongated seat plate 13 is interposed between the nut 12 and the pedestal base plate 4 to reinforce the pedestal base plate 4. Incidentally, if the reference floor surface 3 has no unevenness and a flat state is guaranteed, the pedestal substrate 4 may be directly fixed without being temporarily fixed. After that, the locking nut 7 and the height adjustment leg member 6 are respectively screwed onto the male screw portion 5a of the support shaft 5 installed upright on the pedestal board 4, and the panel holder is attached to the height adjustment leg member 6. 8 from above and rotate the height adjustment leg members 6 to roughly adjust the height.

次に、取付治具１８の両端部を、隣接する支持装置１の
パネル受け台８の取付部１５ｂにそれぞれ嵌合する。こ
の時、折曲部１８ｂがパネル受け板１５の挿入孔１５ｄ
に嵌入されると共に、跨架部１８ａが凹溝１５ｃ上に密
着状に案内された取付治具１８は、パネル受け板１５の
上面と平行面上に延在し、かつ、パネル受け台８の中心
から９０度間隔で四方向に突出する。すなわち、受台基
板４が仮固定の状態で配置され、大体の高さ調整がなさ
れた支持装置１間に跨架された取付治具１８の各端部が
上記の嵌合状態になるように、受台基板４の位置とパネ
ル受け台８の高さを調整すると、各支持装置１は等間隔
かつ直交状に配設され、さらに、全てのパネル受け板１
５の上面は同一面に存在することになり、全体として同
一面上で正確な正方形に形成されたフロアパネルの支持
面を得ることができる。また、傾きの修正がなされた支
持装置１には、その受台基板４と基準床面３との間に適
宜ライナー等を介在させる。なお、高さ調整の際には、
高さ調整脚部材６の固定部６ｂに上方から回動操作用の
工具が係合して行う。Next, both ends of the mounting jig 18 are fitted into the mounting portions 15b of the panel holder 8 of the adjacent support device 1, respectively. At this time, the bent portion 18b is inserted into the insertion hole 15d of the panel receiving plate 15.
The mounting jig 18, which is fitted into the panel support plate 15 and whose straddle portion 18a is closely guided on the groove 15c, extends on a plane parallel to the upper surface of the panel support plate 15 and is attached to the panel support 8. Projects in four directions at 90 degree intervals from the center. That is, the pedestal board 4 is placed in a temporarily fixed state, and each end of the mounting jig 18, which is straddled between the support devices 1 whose heights have been roughly adjusted, is placed in the above-mentioned fitted state. , by adjusting the position of the cradle board 4 and the height of the panel cradle 8, each support device 1 is arranged at equal intervals and orthogonally, and furthermore, all the panel pedestals 1
The upper surfaces of the floor panels 5 and 5 are on the same plane, and it is possible to obtain a support surface of the floor panel that is formed into an accurate square on the same plane as a whole. Further, in the support device 1 whose inclination has been corrected, a liner or the like is appropriately interposed between the pedestal substrate 4 and the reference floor surface 3. In addition, when adjusting the height,
This is done by engaging the fixing portion 6b of the height adjusting leg member 6 with a rotating tool from above.

なお、上記に関する施工の一例を挙げると、先ず一列基
準列を設置し、この時、隣接する支持装置１間の位置及
び垂直度を確実に合わせる。これによって、四方に配置
される各々の支持装置１の調整が容易かつ確実に行われ
、遠方側すなわち終端部側における調整の正確度が向上
する。In addition, to give an example of the above-mentioned construction, first, one reference row is installed, and at this time, the positions and perpendicularities of adjacent support devices 1 are surely matched. Thereby, the adjustment of each of the support devices 1 arranged on the four sides can be easily and reliably performed, and the accuracy of adjustment on the far side, that is, on the terminal end side is improved.

ここで、位置決めされた受台基板４を、アンカーボルト
１１に既に螺合されたナツト１２を緊締して固定する。Here, the positioned pedestal board 4 is fixed by tightening the nut 12 already screwed onto the anchor bolt 11.

次に、回り止めナツト７を高さ調Ｍｍ部材６のフランジ
部６ａの下面に密着状に当接させ、その高さ調整脚部材
６の回動を阻止すると共にガタのない状態で固定する。Next, the anti-rotation nut 7 is brought into close contact with the lower surface of the flange portion 6a of the height adjustment Mm member 6 to prevent rotation of the height adjustment leg member 6 and to fix the height adjustment leg member 6 without play.

この時、パネル受け台８は、筒状部１６の下面に設けら
れた凹部１６ａが、高さ調整脚部材６のフランジ部６ａ
の上面に設けられた凸部６ｅと係合しているから、高さ
調整脚部材６と共に回動が阻止されて所定の高さ位置に
固定される。At this time, in the panel holder 8, the concave portion 16a provided on the lower surface of the cylindrical portion 16 is aligned with the flange portion 6a of the height adjusting leg member 6.
Since it is engaged with the convex portion 6e provided on the upper surface of the height adjusting leg member 6, rotation thereof is prevented and the height adjusting leg member 6 is fixed at a predetermined height position.

そして、支持装置１間に跨架されている取付治具１８を
取り外し、フロアパネル２を敷設していく。フロアパネ
ル２の敷設に際しては、フロアパネル２のコーナ一部２
ａの凹部２ｂとパネル受け台８の突起１５ａとを係合さ
せ、これらの間にガタつき防止用の［パッド１７を介在
させる。最後に、パネル押さえ９を貫通孔１８内に挿入
し、その係合面９ｂを段部２ｂに係合すると共に、段付
き挿通孔９ａにビス１９を挿入して高さ調整脚部材６の
固定部６ｂのネジ部６ｆと螺合緊締する。Then, the mounting jig 18 spanning between the support devices 1 is removed, and the floor panel 2 is laid. When installing the floor panel 2, place the corner part 2 of the floor panel 2.
The concave portion 2b of a is engaged with the protrusion 15a of the panel holder 8, and a pad 17 for preventing rattling is interposed between them. Finally, insert the panel presser 9 into the through hole 18, engage its engaging surface 9b with the stepped portion 2b, and insert the screw 19 into the stepped insertion hole 9a to fix the height adjustment leg member 6. The part 6b is screwed and tightened with the threaded part 6f.

（発明の効果） 以上説明したように、本発明のフリーアクセスフロアの
施工方法によれば、取付治具を用いて支持装置の調整す
ることによって、各支持装置は正確に所定位置に配設さ
れ、かつ、各パネル受け台の高さは同一に保持される。(Effects of the Invention) As explained above, according to the raised floor construction method of the present invention, each support device can be accurately placed in a predetermined position by adjusting the support device using a mounting jig. , and the height of each panel holder is maintained the same.

従って、全体として同一面上で正確な正方形に形成され
たフロアパネルの支持面を容易に得ることができる。Therefore, it is possible to easily obtain a support surface of the floor panel that is formed in an accurate square shape on the same plane as a whole.

また、フロアパネルを敷設する前に支持装置の調整作業
を行うため、細かい作業を容易かつ確実にでき、施工性
を向上させることができる。Furthermore, since the support device is adjusted before the floor panel is laid, detailed work can be done easily and reliably, and workability can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の一実施例を示すもので、取付治具を
支持装置間に跨架する施工状態を示す斜視図、第２図は
、フロアパネルを載置する施工状態を示す斜視図、第３
図は、受台基板の配置態様を示す平面図、第４図は、支
持装置とフロアパネルとの係合態様を示す分解斜視図、
第５図は、同断面図、第６図は、従来の技術を示す斜視
図である。 １・・・支持装置、 ４・・・受台基板、 ５・・・支持軸、 ６・・・高さ調整脚部材、 ７・・・回り止めナツト、 ８・・・パネル受け台、 ９・・・パネル押さえ、 １０・・・フリーアクセスフロア、 １１・・・ボルト、 １２・・・ナツト、 １５ｂ・・・取付部、 １８・・・取付治具、 ２８・・・アンカー締結手段。 第３図 第４ 図 第５ 図Fig. 1 shows an embodiment of the present invention, and Fig. 2 is a perspective view showing a construction state in which a mounting jig is straddled between support devices, and Fig. 2 is a perspective view showing a construction state in which a floor panel is placed. Figure, 3rd
FIG. 4 is a plan view showing how the pedestal board is arranged; FIG. 4 is an exploded perspective view showing how the support device and the floor panel are engaged;
FIG. 5 is a sectional view of the same, and FIG. 6 is a perspective view showing the conventional technique. DESCRIPTION OF SYMBOLS 1...Support device, 4...Base board, 5...Support shaft, 6...Height adjustment leg member, 7...Stopping nut, 8...Panel cradle, 9... ...Panel retainer, 10...Free access floor, 11...Bolt, 12...Nut, 15b...Mounting portion, 18...Mounting jig, 28...Anchor fastening means. Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】 １、基準床面上に複数のフロアパネルを支持装置を介し
て敷設して、前記基準床面とフロアパネルとの間に自由
空間を確保するようにしたフリーアクセスフロアの施工
方法において、 前記基準床面に配置された受台基板の支持軸に高さ調整
脚部材を螺合し、該高さ調整脚部材にパネル受け台を装
着する工程と、 取り外し可能な取付治具を隣接する前記支持装置間に跨
架し、前記受台基板の固定位置及び前記パネル受け台の
高さ調整を行う工程と、 前記受台基板を前記基準床面にボルト、ナットからなる
アンカー締結手段により固定する工程と、前記支持軸に
螺合された回り止めナットで高さ調整脚部材の位置決め
をしてパネル受け台の高さを固定する工程と、 前記フロアパネルを前記パネル受け台に載置し、パネル
押さえにより固定する工程と、 を含むことを特徴とするフリーアクセスフロアの施工方
法。[Claims] 1. A free access floor in which a plurality of floor panels are laid on a reference floor surface via support devices to ensure free space between the reference floor surface and the floor panels. The construction method includes a step of screwing a height adjustment leg member onto a support shaft of a pedestal board placed on the reference floor surface, and attaching a panel holder to the height adjustment leg member, and a removable mounting jig. a step of adjusting the fixing position of the pedestal board and the height of the panel holder by straddling the support device between the adjacent supporting devices; a step of fixing the floor panel with a fastening means; a step of fixing the height of the panel holder by positioning the height adjustment leg member with a locking nut screwed onto the support shaft; and a step of fixing the height of the panel holder with the floor panel. A method for constructing a raised floor, comprising: placing the panel on the floor and fixing it by pressing the panel.