JPH09256583A - Jointing method of louver in extension type spiral stair - Google Patents
Jointing method of louver in extension type spiral stairInfo
- Publication number
- JPH09256583A JPH09256583A JP8090401A JP9040196A JPH09256583A JP H09256583 A JPH09256583 A JP H09256583A JP 8090401 A JP8090401 A JP 8090401A JP 9040196 A JP9040196 A JP 9040196A JP H09256583 A JPH09256583 A JP H09256583A
- Authority
- JP
- Japan
- Prior art keywords
- louver
- foundation
- assembly material
- staircase
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 48
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水槽，タンク，倉庫
などに配備する６ｍ以上の螺旋階段や共同住宅用避難階
段の施工に関し、特には継ぎ足し式螺旋階段に於けるル
−バ−のジョイント方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of spiral stairs of 6 m or more to be placed in aquariums, tanks, warehouses, etc. and evacuation stairs for apartments, and particularly to a method for joining louvers in a reciprocating spiral staircase. Regarding
【０００２】[0002]
【従来の技術】従来の６ｍ以上の螺旋階段の施工は、予
めイ)工場にて、定形寸法である長さ６ｍの基礎用階段組
立材（２）と、踏台付支柱（13）とを形成し、それを施
工現場に運搬しておく。尚、前記基礎用階段組立材
（２）の基礎組立鉄筋と連結する反対側のル−バ−（2
1）端部にはサヤ管などの結合具（21a）を取付けて突設
している。先ずロ)基礎用階段組立材（２）の下端を、現
場で予め配置された基礎組立鉄筋と連結して立設する工
程を行う。次に踏台付支柱（13）をクレ−ンなどで吊り
上げると共に、踏台付支柱（23）の上端に設けたフラン
ジ（24）と、踏台付支柱（13）の下端に設けたフランジ
（14）を合わせてボルト（15）で固定し連結させる。そ
の後、結合具（21a）にル−バ−（11）の下端を１本ず
つ挿入させる（図４参照）。また前記ル−バ−（11）が
踏台と当接する箇所を適宜に溶接して固定させ、１本目
のル−バ−（11）が踏台付支柱（13）の周囲に固定され
る。そして、次のル−バ−（11）を地上から持ち上げて
隣の結合具（21a）にその下端を挿入すると共に踏台と
当接した箇所を適宜に溶接して固定させ、２本目のル−
バ−（11）が踏台付支柱（13）の周囲に固定される。こ
のように順次、ル−バ−（11）を地上から持ち上げ、そ
の下端を結合具（21a）に挿入させ連結し、所定本数の
ル−バ−（11）を踏台付支柱（13）の周囲に固定するこ
とにより、ル−バ−（11）のジョイントが終了するので
ある。尚、１２ｍ以上の螺旋階段を配置させる場合に
は、更に新たな踏台付支柱（13）を立設してボルト（1
5）で連結させて順次高くして行き、この時、ル−バ−
（11）は結合具（21a）を介して連結すると共に踏台に
溶接して固定させて行くのである。2. Description of the Related Art For the conventional construction of a spiral staircase of 6 m or more, a staircase assembly material (2) having a length of 6 m, which is a standard size, and a support column (13) with a step are formed in advance in a) factory. And transport it to the construction site. In addition, the above-mentioned louver (2
1) A fitting (21a) such as a sheath pipe is attached to the end to project. First, (b) the step of connecting the lower end of the foundation stairs assembly material (2) to the foundation assembly rebar preliminarily arranged on site and standingly installed. Next, the column with step (13) is lifted with a crane, and the flange (24) provided at the upper end of the column with step (23) and the flange (14) provided at the lower end of the column with step (13) are attached. Fix them together with bolts (15) and connect them. After that, the lower ends of the louvers (11) are inserted into the couplers (21a) one by one (see FIG. 4). Further, a portion where the louver (11) comes into contact with the step is appropriately welded and fixed, and the first louver (11) is fixed around the stepped column (13). Then, the next louver (11) is lifted from the ground, the lower end of the louver (11) is inserted into the adjacent coupling (21a), and the part in contact with the step is appropriately welded and fixed to the second louver (11).
The bar (11) is fixed around the strut (13) with step. In this way, the louvers (11) are sequentially lifted from the ground, and the lower ends of the louvers (11) are inserted into the couplings (21a) and connected, and a predetermined number of louvers (11) are surrounded by the stepped column (13). The joint of the louver (11) is completed by fixing the joint to the louver (11). When arranging a spiral staircase of 12 m or more, a new strut with step (13) is installed upright and the bolt (1
Connect with 5) and raise sequentially, and at this time, the louver
(11) is connected via a coupling tool (21a) and is welded and fixed to the step.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら前記ル−
バ−（11）をジョイントする場合、地上からル−バ−
（11）を１本１本持ち上げる作業者と、それを受け取っ
てル−バ−（11）の下端を結合具（21a）へ挿入する作
業者と、ル−バ−（11）の上部を押える作業者と、ル−
バ−（11）と数箇所の踏台を移動しながら順次溶接する
作業者が少なくとも必要であった。また溶接をする際、
溶接の前処理及び後処理が必要であり、更には溶接後に
ペンキ塗布などの仕上げ作業が一般に行われるので多く
の手間とコストが掛っていた。又、高所で狭い場所の作
業となるため、大変危険であった。しかも、ル−バ−
（11）を１本１本溶接する際に垂直に取付かず斜めにな
り易く、且つル−バ−（11）の間隔がバラバラになり易
いため、見栄えが悪くなる恐れがあった。この場合はル
−バ−（11）を取外し、始めからル−バ−（11）の取付
けをし直さなければならず、その手直しは面倒で仕上が
りも奇麗に仕上げることが難しかった。更に溶接作業は
雨天，強風等の天候の場合には作業が中断されるため、
計画通りに作業が進行せず、完成日が遅れがちになる等
の問題点があった。[Problems to be Solved by the Invention]
When connecting the bar (11), the louver from the ground
An operator who lifts (11) one by one, an operator who receives it and inserts the lower end of the louver (11) into the coupler (21a), and an upper part of the louver (11). Workers and
At least an operator was needed to weld the bar (11) and several steps in sequence while moving. Also when welding
Pretreatment and posttreatment of welding are required, and further, finishing work such as paint application is generally performed after welding, which requires a lot of labor and cost. In addition, the work is done in a high place and in a narrow place, which is very dangerous. Moreover, the louver
When the (11) were welded one by one, they were not attached vertically and tended to be slanted, and the intervals between the louvers (11) were likely to be different, so that the appearance might be deteriorated. In this case, the louver (11) must be removed and the louver (11) must be reattached from the beginning, which is troublesome and difficult to finish neatly. Furthermore, the welding work is interrupted in rainy weather, strong winds, etc.,
There were problems such as the work did not proceed as planned and the completion date tended to be delayed.
【０００４】本発明は作業者数の削減及び作業時間の激
減が可能となる継ぎ足し式螺旋階段に於けるル−バ−の
ジョイント方法を提供することを目的とする。It is an object of the present invention to provide a louver joint method in a reciprocating spiral staircase which can reduce the number of workers and drastically reduce the working time.
【０００５】[0005]
【課題を解決するための手段】上記問題点を解決するた
めに本発明は成されたものであり、つまり、イ)工場に
て、従来の踏台付支柱の周囲にル−バ−を所定本数取付
けると共に各ル−バ−の両端にリング材を固定させた継
ぎ足し用階段組立材と、基礎組立鉄筋と一端を連結する
ための踏台付支柱の周囲にル−バ−を所定本数取付けた
従来の基礎用階段組立材の上部側の各ル−バ−の端部に
リング材を固定させたものとを、それぞれ形成させる階
段組立材の形成工程。ロ)前記基礎用階段組立材を、現場
で予め配置された基礎組立鉄筋と連結して立設する工
程。ハ)前記基礎用階段組立材の踏台付支柱に継ぎ足し用
階段組立材の踏台付支柱を連結すると共に、前記リング
材同志を締結部材で固定する工程。 以上の工程から成
す。The present invention has been made to solve the above problems. That is, (a) in a factory, a predetermined number of louvers are provided around a conventional strut with steps. In addition to the installation, a predetermined number of louvers are attached around the staircase assembly material for addition, in which ring materials are fixed to both ends of each louver, and a strut with a step for connecting one end to the base assembly rebar. A step of forming a staircase assembly, in which a ring material is fixed to the end of each louver on the upper side of the foundation staircase assembly material. (B) A step of connecting the above-mentioned foundation staircase assembly material to a standing structure by connecting it to the foundation assembly rebars arranged in advance at the site. C) A step of connecting the strut-equipped strut of the foundation stair assembly to the strut-equipped strut assembly and fixing the ring members with a fastening member. It consists of the above steps.
【０００６】[0006]
【発明の実施の形態】図１は本発明方法によるジョイン
ト要部を示す図であり、これに基づき実施形態例を説明
する。先ず図中の各番号について説明すれば、（１）は
６ｍ以上の螺旋階段を配備する時に用いる金属製の継ぎ
足し用階段組立材であり、これには踏台付支柱（13）
と、該踏台付支柱（13）の周囲に所定本数取付けたル−
バ−（11）と、各ル−バ−（11）の両端面に当接させて
溶接で固定した２枚のリング材（12）とがある［図２
（ａ）参照］。（２）は基礎組立鉄筋（４）と下端側を
連結して立設する金属製の基礎用階段組立材であり、該
基礎用階段組立材（２）には、踏台付支柱（23）と、そ
の周囲に所定本数取付けたル−バ−（21）と、各ル−バ
−（21）の上端面と当接させて固定したリング材（22）
とがある［図２（ｂ）参照］。尚、前記継ぎ足し用階段
組立材（１）と前記基礎用階段組立材（２）はイ)工場に
て予め溶接加工して形成させておく。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a main part of a joint according to the method of the present invention, and an embodiment will be described based on this. First, to explain each number in the figure, (1) is a metal staircase assembly material for adding when using a spiral staircase with a length of 6 m or more.
And a ruler installed in a predetermined number around the pillar with step (13).
There are a bar (11) and two ring members (12) which are fixed by welding by abutting on both end faces of each louver (11) [Fig.
(A)]. (2) is a staircase assembly material for a metal foundation which is erected by connecting the base assembly reinforcing bar (4) and the lower end side, and the staircase assembly material for the foundation (2) includes a support column (23) with a step. , A certain number of louvers (21) attached around it, and a ring member (22) fixed in contact with the upper end surface of each louver (21)
[See FIG. 2 (b)]. In addition, the staircase assembly material (1) for replenishment and the staircase assembly material (2) for foundation are formed by welding in advance in (a) factory.
【０００７】次に前記継ぎ足し用階段組立材（１）と基
礎用階段組立材（２）を用いて、図３に示すような螺旋
階段が施工される場合には、先ず基礎用階段組立材
（２）の下端を、ロ)現場で予め配置された基礎組立鉄筋
（４）の上端と連結して立設する工程を行う。この工程
は従来と同一である。次に継ぎ足し用階段組立材（１）
をクレ−ンなどで吊り上げる。そして踏台付支柱（23）
の上端に設けたフランジ（24）と、踏台付支柱（13）の
下端に設けたフランジ（14）を合わせてボルト（15）で
固定することにより、ハ)踏台付支柱（23）に踏台付支柱
（13）が連結される。また前記継ぎ足し用階段組立材
（１）下端のリング材（12）と前記基礎用階段組立材
（２）のリング材（22）とを図１に示すように締結部材
（３）で固定することにより、ル−バ−（11）のジョイ
ントが終了すると同時に継ぎ足し用階段組立材（１）の
立設も終了するのである。更に螺旋階段を高くする際に
は、高さに応じて新たな継ぎ足し用階段組立材（１）を
上記要領で立設させ、必要な高さに達した時点で継ぎ足
し式螺旋階段は完成されるのである。尚、この時、従来
のような溶接加工が不要であり、且つ１本１本ル−バ−
（11）を踏台付支柱（13）の周囲に固定する必要もない
ので、天候に左右されずに極めてル−バ−（11）の取付
けが効率良く行えるものとなる。例えば、１０ｍのル−
バ−（11）を取付ける場合、従来方法で行うと、４人の
作業者で４日間掛っていたものが、本発明方法では３人
の作業者で１時間前後の作業で終了させることができ
た。又、本発明の形態で使用する継ぎ足し用階段組立材
（１）に取付けられたル−バ−（11）は、両端がリング
材（12）で固定されるため、従来の結合具（21a）によ
るル−バ−（11）のものよりも強固なものとなる。Next, when a spiral staircase as shown in FIG. 3 is constructed using the above-mentioned replenishment staircase assembly material (1) and the foundation staircase assembly material (2), first, the foundation staircase assembly material ( (2) A step of connecting the lower end of (2) to the upper end of the base assembly rebar (4) which is previously arranged at the site and erected. This process is the same as the conventional one. Next, stair assembly material for replenishment (1)
Is lifted with a crane. And a pillar with a step (23)
The flange (24) provided on the upper end of the step and the flange (14) provided on the lower end of the stepped column (13) are aligned and fixed with bolts (15). The columns (13) are connected. Further, the ring material (12) at the lower end of the staircase assembly material for replenishment (1) and the ring material (22) of the staircase assembly material for foundation (2) are fixed by a fastening member (3) as shown in FIG. Thus, at the same time as the joint of the louver (11) is completed, the standing of the staircase assembly material (1) for addition is also completed. When the spiral staircase is to be further raised, a new staircase assembly material (1) for addition is newly installed according to the height, and when the required height is reached, the addition-type spiral staircase is completed. Of. At this time, the conventional welding process is not required, and one by one
Since it is not necessary to fix (11) around the strut (13) with a step, the louver (11) can be extremely efficiently attached regardless of the weather. For example, 10m rule
When the bar (11) is attached, it takes four days for four workers if it is done by the conventional method, but with the method of the present invention, it can be completed in about one hour by three workers. It was Further, the louver (11) attached to the staircase assembly material (1) for replenishment used in the embodiment of the present invention has both ends fixed by the ring material (12), so that the conventional coupling tool (21a). It is stronger than that of the louver (11).
【０００８】[0008]
【発明の効果】本発明はこのように構成させたことによ
り、下記の効果を有する。According to the present invention having the above-described structure, the following effects can be obtained.
【０００９】請求項１のように予め工場にて、従来の踏
台付支柱（13）の周囲にル−バ−（11）を取付けたこ
と、各ル−バ−（11）,（21）の端部にリング材（12）,
（22）を固定させたことにより、ル−バ−（11）の取付
けの正確な継ぎ足し用階段組立材（１）と、基礎用階段
組立材（２）とを得て、これを用いて基礎用階段組立材
（２）を、ロ)現場で予め配置された基礎組立鉄筋（４）
と連結して立設する工程と、ハ)踏台付支柱（13）,（2
3）を連結すると共にリング材（12）,（22）を締結部材
（３）で固定させる工程とを経てル−バ−（11）のジョ
イントは完了する。このため、従来必要であったル−バ
−（11）１本毎の溶接作業の前処理，溶接作業，後処理
が不要となると共に次の溶接箇所まで移動してから行う
前処理，溶接作業，後処理を繰返し行う手間が省略で
き、更にペンキ塗布などの仕上げ作業も省略出来るもの
となり、現場作業が大幅に省略出来る。また天候に左右
されることなく計画通りに施工出来るものとなると共に
溶接などの熟練技能がなくても簡単に、誰にでも短時間
に螺旋階段の配備が行えるものとなる。この結果、螺旋
階段の施工費が従来よりも半分近くコストダウンが可能
となり、且つ安全に行えるものとなった。更に従来のよ
うなル−バ−（11）の手直しがなくなり、仕上がりも奇
麗に行えるものとなった。According to the first aspect of the present invention, the louvers (11) are attached to the periphery of the conventional strut (13) with a step in advance at the factory, and the louvers (11) and (21) are attached. Ring material at the end (12),
By fixing (22), the staircase assembly material (1) for the correct addition of the installation of the louver (11) and the staircase assembly material (2) for the foundation are obtained, and by using this B) Stair assembly material (2) for the base assembly rebar (4) that was previously placed on the site.
Step of connecting with and standing up, and c) Post with step (13), (2
The joint of the louver (11) is completed through the steps of connecting 3) and fixing the ring members (12) and (22) with the fastening member (3). For this reason, the pre-treatment, welding work, and post-treatment for each of the louvers (11), which have been conventionally required, are unnecessary, and the pre-treatment and welding work to be performed after moving to the next welding position. ， The work of repeating the post-treatment can be omitted, and the finishing work such as paint application can also be omitted, and the site work can be largely omitted. In addition, it will be possible to carry out the construction as planned regardless of the weather conditions, and it will be possible for anyone to deploy the spiral staircase in a short time easily without requiring skilled skills such as welding. As a result, the construction cost of the spiral staircase can be reduced by almost half compared to the conventional one, and it can be performed safely. Furthermore, the louver (11), which was required in the past, has been eliminated, and the finish can be neatly done.
【００１０】請求項２のようにリング材（12）,（22）
に取付穴を設けると共に該リング材（12）,（22）には
各ル−バ−（11）,（21）の端部を固定させることによ
り、リング材（12）,（22）を当接させてその取付穴を
合わせ、締結部材（３）で固定するだけで、ル−バ−
（11）のジョイントが完了するので、従来のようなル−
バ−（11）を地上から１本ずつ持ち上げる作業者が不要
となり、且つ各ル−バ−（11）,（21）間をジョイント
する作業者やル−バ−（11）の上部を持つ作業者及び溶
接する作業者が不要となり、クレ−ンなどで吊り上げた
時に従来行っていた踏台付支柱（13）,（23）の連結作
業と同時に、リング材（12）,（22）を固定する作業者
がいれば良く、作業者の削減が出来る。またその作業も
工具を用いれば誰にでも簡単に行え、且つ安全で素早く
行える。Ring materials (12), (22) as claimed in claim 2.
The ring members (12) and (22) are attached to the ring members (12) and (22) by fixing the ends of the louvers (11) and (21) to the ring members (12) and (22). The louver can be made by simply contacting them, aligning their mounting holes, and fixing them with the fastening member (3).
Since the joint of (11) is completed,
There is no need for an operator to lift the louvers (11) one by one from the ground, and an operator who joins between the louvers (11) and (21) and an operation to hold the louvers (11) above. No need for personnel and welding workers, and the ring members (12), (22) are fixed at the same time as the work of connecting the columns with steps (13), (23), which was conventionally performed when hoisting with a crane or the like. The number of workers can be reduced as long as there are workers. In addition, the work can be easily performed by anyone using a tool, and can be performed safely and quickly.
【図１】本発明方法によるジョイント要部を示す説明図
である。FIG. 1 is an explanatory view showing a main part of a joint according to the method of the present invention.
【図２】本実施形態で用いる階段組立材を示す説明図で
ある。FIG. 2 is an explanatory view showing a staircase assembly used in the present embodiment.
【図３】本発明方法によるジョイント状態を示す説明図
である。FIG. 3 is an explanatory view showing a joint state according to the method of the present invention.
【図４】従来方法によるジョイント要部を示す説明図で
ある。FIG. 4 is an explanatory diagram showing a main part of a joint according to a conventional method.
１ 継ぎ足し用階段組立材 11 ル−バ− 12 リング材 13 踏台付支柱 ２ 基礎用階段組立材 21 ル−バ− 22 リング材 23 踏台付支柱 ３ 締結部材 ４ 基礎組立鉄筋 1 Stair assembly material for replenishment 11 Louver 12 Ring material 13 Strut with stepped base 2 Stair assembly material for foundation 21 Louver 22 Ring material 23 Strut with stepped base 3 Fastening member 4 Foundation assembly Rebar
Claims (2)
ル−バ−（11）を所定本数取付けると共に各ル−バ−
（11）の両端にリング材（12）を固定させた継ぎ足し用
階段組立材（１）と、基礎組立鉄筋（４）と一端を連結
する踏台付支柱（23）の周囲にル−バ−（21）を所定本
数取付けると共に前記踏台付支柱（23）の他端側の各ル
−バ−（21）の端部にリング材（22）を固定させた基礎
用階段組立材（２）とをそれぞれ形成させる階段組立材
の形成工程。ロ )前記基礎用階段組立材（２）を、現場で予め配置され
た基礎組立鉄筋（４）と連結して立設する工程。ハ )前記基礎用階段組立材（２）の踏台付支柱（23）に前
記継ぎ足し用階段組立材（１）の踏台付支柱（13）を連
結すると共に、前記リング材（12）とリング材（22）を
締結部材（３）で固定する工程。 以上の工程から成すことを特徴とする継ぎ足し式螺旋階
段に於けるル−バ−のジョイント方法。1. A) In a factory, a predetermined number of louvers (11) are mounted around a strut (13) with a step, and each louver is attached.
A louver () is provided around the staircase assembly material (1) for addition with the ring material (12) fixed to both ends of the (11), and the stepped column (23) connecting one end to the foundation assembly rebar (4). 21) and a step assembly material (2) for a foundation in which a ring material (22) is fixed to the end of each louver (21) on the other end side of the strut (23) with a step. Step of forming staircase assembly material to be formed respectively. (B) A step of connecting the foundation staircase assembly material (2) to the foundation assembly rebar (4) which is arranged in advance at the site and erected. C) The strut (23) of the foundation stair assembly (2) is connected to the strut (13) of the step stair assembly (1), and the ring (12) and the ring ( Step of fixing 22) with fastening member (3). A louver joint method in a replenishing type spiral staircase characterized by comprising the above steps.
きであり、該リング材（12）,（22）には各ル−バ−（1
1）,（21）の端面が当接し固定されたものを用いる請求
項１記載の継ぎ足し式螺旋階段に於けるル−バ−のジョ
イント方法。2. The ring members (12), (22) are provided with mounting holes, and each of the louvers (1) is attached to the ring members (12), (22).
The method of jointing a louver in a replenishment type spiral staircase according to claim 1, wherein the end faces of (1) and (21) are abutted and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8090401A JPH09256583A (en) | 1996-03-19 | 1996-03-19 | Jointing method of louver in extension type spiral stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8090401A JPH09256583A (en) | 1996-03-19 | 1996-03-19 | Jointing method of louver in extension type spiral stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09256583A true JPH09256583A (en) | 1997-09-30 |
Family
ID=13997572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8090401A Pending JPH09256583A (en) | 1996-03-19 | 1996-03-19 | Jointing method of louver in extension type spiral stair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09256583A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007120008A (en) * | 2005-10-25 | 2007-05-17 | Nippon Light Metal Co Ltd | Connecting structure of staircase support |
| JP2017061774A (en) * | 2015-09-24 | 2017-03-30 | 東海工営 株式会社 | Demolition method for concrete pole, connection type stand bar, and connection type stand bar device |
-
1996
- 1996-03-19 JP JP8090401A patent/JPH09256583A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007120008A (en) * | 2005-10-25 | 2007-05-17 | Nippon Light Metal Co Ltd | Connecting structure of staircase support |
| JP2017061774A (en) * | 2015-09-24 | 2017-03-30 | 東海工営 株式会社 | Demolition method for concrete pole, connection type stand bar, and connection type stand bar device |
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