JPH11303349A - Precast concrete stairs corresponding to stairs of different floor height, and manufacture thereof - Google Patents
Precast concrete stairs corresponding to stairs of different floor height, and manufacture thereofInfo
- Publication number
- JPH11303349A JPH11303349A JP10110331A JP11033198A JPH11303349A JP H11303349 A JPH11303349 A JP H11303349A JP 10110331 A JP10110331 A JP 10110331A JP 11033198 A JP11033198 A JP 11033198A JP H11303349 A JPH11303349 A JP H11303349A
- Authority
- JP
- Japan
- Prior art keywords
- stairs
- precast concrete
- stair beam
- welding
- building
- 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
Landscapes
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】この発明は、建物の階段をプ
レキャストコンクリート部材(以下、Pca部材と略す
場合がある。)として製作する技術分野に属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of manufacturing stairs of a building as a precast concrete member (hereinafter sometimes abbreviated as a Pca member).
【0002】[0002]
【従来の技術】 従来、鉄筋コンクリート造(以下、
RC造と略す場合がある。)の階段を製作し又は設置す
る方法は、例えば後記の特開平9ー123142号公
報の図7と図8に記載されているように、建物の種類、
用途や階高などに応じて段数や蹴上げ寸法を適正に設
計、施工するため現地合わせの施工をしいられている。 特開平5ー295868号公報に記載されたRC造
階段の施工方法は、階段梁部と踊り場を現場打ちコンク
リートにより建物躯体(壁面)と一体の片持ち状態に構
築する。前記階段梁部の自由端縁にささら桁を固定し、
プレキャストコンクリート部材として製作した段板を取
付け、上下の段板の間に蹴上げ板代用の薄板を設置す
る。 特許第2550885号公報(平成8年11月6日
発行)に記載されたRC造階段の製造方法は、踏面部と
蹴上げ部を形成する型を所望の段数に応じて前後方向へ
移動可能に並べて枠体に固定し、その上にコンクリート
を打設して階段の梁部まで一体的に製造する。 特開平9ー123142号公報に記載されたプレキ
ャストコンクリート製階段成形装置は、第一、第二の踊
り場支持部と、伸縮継手により長さを可変の階段梁支持
部と、階段側面の成形用ささら型枠とから成り、踊り場
部分と階段部分とを含めた階段の全体をプレキャストコ
ンクリート製として一体成形する装置であり、成形方法
も記載されている。2. Description of the Related Art Conventionally, reinforced concrete structures (hereinafter referred to as
It may be abbreviated as RC construction. The method of manufacturing or installing the stairs is based on, for example, the type of the building, as described in FIGS. 7 and 8 of JP-A-9-123142.
In order to properly design and construct the number of steps and the size of the rise according to the application and the floor height, construction is done on site. In the construction method of RC stairs described in Japanese Patent Application Laid-Open No. 5-295868, a stair beam portion and a landing are constructed by cast-in-place concrete in a cantilever state integrally with a building frame (wall surface). Fixing a slab girder to the free edge of the stair beam,
Attach the stepboard made as a precast concrete member, and install a thin plate as a substitute for the riser plate between the upper and lower steps. In the method for manufacturing an RC staircase described in Japanese Patent No. 2550885 (issued on November 6, 1996), a mold forming a tread portion and a riser is arranged so as to be movable in the front-rear direction according to a desired number of steps. It is fixed to the frame, and concrete is cast on it, and the beam up to the stairs is integrally manufactured. The precast concrete stair forming apparatus described in Japanese Patent Application Laid-Open No. 9-123142 includes a first and a second landing support, a stair beam support having a variable length by an expansion joint, and a staircase for forming a side surface of the stair. It is a device that is made of pre-cast concrete and is integrally formed of a formwork and the entire stairs including a landing portion and a staircase portion, and also describes a forming method.
【0003】[0003]
【本発明が解決しようとする課題】I)上記の方法
は、現地合わせによる施工をしいられるため、階段型枠
工事の生産効率の低下、配筋の乱れ、左官工事の発生、
建物の建築工事における作業用安全通路の早期使用の遅
れ等々の問題が指摘されている。 II)上記の階段施工方法も、階段梁部を現場打ちコン
クリートで片持ち状態に構築するので、上記と同様な
問題点がある。のみならず、ささら桁の固定、段板の固
定作業は現場打ちの階段梁部が強度を発現するまで養生
した後でなければ施工できず、また、そうした作業は多
くの工数をかけて現場で行うので、工期の短縮、省力
化、省人化にあまり利益がない。 III) 上記の階段製造方法も、異なる階高に応じて段
数と蹴上げ高さを自由に設定できることを目的としてい
るが、その自由度は型枠装置の構成と作用を限度とする
ものにすぎない。 IV)上記の階段成形装置も、建物の階高に応じて階段
の高さと長さを変えられるが、その自由度は型枠装置の
構成と作用を限度とするものにすぎない。[Issues to be solved by the present invention] I) Since the above-mentioned method is performed on site, the production efficiency of stair formwork decreases, the arrangement of reinforcing bars is disturbed, plastering occurs,
Problems have been pointed out, such as a delay in the early use of work safety passages in building construction work. II) The above-mentioned stairway construction method also has the same problem as the above because the stair beam is constructed in a cantilever state using cast-in-place concrete. Not only that, the fixing of the girder and the fixing of the steps can only be carried out after curing the cast-in-place stair beams until the strength has developed, and such work requires a lot of man-hours. Since it does, there is not much benefit in shortening the construction period, saving labor and labor. III) The above-mentioned method of manufacturing stairs also aims to be able to freely set the number of steps and the rise height according to different floor heights, but the degree of freedom is limited only to the configuration and operation of the formwork device. . IV) The above stair forming apparatus can also change the height and length of the stairs according to the floor height of the building, but the degree of freedom is limited only to the configuration and operation of the formwork apparatus.
【0004】従って、本発明の目的は、建物の階高の異
なるRC階段を、同一の製作ベッドを数多く回転して安
価に製作することが可能なプレキャストコンクリート階
段及びその製作方法を提供することである。本発明の次
の目的は、工場又は現場サイトの設備が整った場所で高
品質に実施でき、現場の型枠工事、仮設工事の省人化と
左官工事の省略を図れ、建築工事の作業用安全通路とし
て早期使用が可能なプレキャストコンクリート階段及び
その製作方法を提供することである。Accordingly, an object of the present invention is to provide a precast concrete staircase capable of inexpensively manufacturing RC stairs having different floor heights of a building by rotating the same manufacturing bed many times, and a method of manufacturing the same. is there. The next object of the present invention can be implemented in a high-quality place in a factory or a site where the equipment at the site is well-equipped. An object of the present invention is to provide a precast concrete staircase that can be used as a safety passage at an early stage and a method of manufacturing the same.
【0005】[0005]
【課題を解決するための手段】上記の課題を解決するた
めの手段として、請求項1記載の発明に係る階高の異な
る階段対応のプレキャストコンクリート階段は、蹴上げ
段部と踏面部の無い階段梁部と踊り場部分とが一連のプ
レキャストコンクリート部材として建物の階高に適正な
寸法仕様で製作され、階段梁部の上面の傾斜方向に溶接
下地の金物が打ち込まれていること、蹴上げ段部と踏面
部を形成する段部も側面から見て三角柱状のプレキャス
トコンクリート部材として製作され、該段部の下底面部
に前記階段梁部の金物と接触する配置で溶接用の金物が
打ち込まれていること、前記階段梁部の上に前記段部が
建物の階高に応じて割り付けたピッチで配置され、双方
の金物同士を溶接して一体化されていることを特徴とす
る。As a means for solving the above-mentioned problems, a precast concrete staircase for stairs having different floor heights according to the present invention is a stair beam having no riser step portion and no tread portion. The part and landing are made as a series of precast concrete members with the appropriate dimensions for the floor height of the building, metal fittings for the welding base are driven into the upper surface of the stair beam, and the riser step and step The step portion forming the surface portion is also manufactured as a precast concrete member having a triangular prism shape as viewed from the side, and a metal fitting for welding is driven into the lower bottom portion of the step portion so as to be in contact with the metal piece of the stair beam. The step is arranged on the stair beam at a pitch allocated according to the floor height of the building, and both hardwares are welded together to be integrated.
【0006】請求項2記載の発明は、請求項1に記載し
た階高の異なる階段対応のプレキャストコンクリート階
段は、双方の金物同士を溶接して一体化された階段梁部
と段部の隙間は注入したモルタルによって埋められてい
ることを特徴とする。請求項3記載の発明は、階高の異
なる階段対応のプレキャストコンクリート階段の製作方
法は、蹴上げ段部と踏面部の無い階段梁部と踊り場部分
とを一連のプレキャストコンクリート部材として、建物
の階高に適正な寸法仕様で、且つ階段梁部の上面の傾斜
方向に溶接下地の金物を打ち込んで製作する工程と、蹴
上げ段部と踏面部を形成する段部を側面から見て三角柱
状のプレキャストコンクリート部材として、且つ該段部
の下底面部に前記階段梁部の金物と接触する配置で溶接
用の金物を打ち込んで製作する工程と、前記階段梁部の
上面に前記段部を建物の階高に応じて割り付けたピッチ
で配置し双方の金物同士を溶接して一体化する工程とか
ら成ることを特徴とする。According to a second aspect of the present invention, in the precast concrete staircase according to the first aspect, the gap between the stair beam portion and the step portion, which are integrated by welding both metal parts, is provided. It is characterized by being filled with injected mortar. According to a third aspect of the present invention, there is provided a method of manufacturing a precast concrete stair corresponding to a stair having a different floor height, wherein a stair beam portion having no riser step, a tread portion, and a landing portion are formed as a series of precast concrete members. The process of manufacturing by fitting metal under the welding base in the inclined direction of the upper surface of the stair beam part with the appropriate dimensional specifications, and the precast concrete in the form of a triangular prism as viewed from the side of the step forming the riser step and the tread part A step of driving a metal fitting for welding in such a manner as to be in contact with the metal fittings of the stair beam on the lower bottom surface of the step, and forming the step on the upper surface of the stair beam, And disposing them at a pitch allocated according to the above, and welding and unifying both metal parts.
【0007】請求項4記載の発明は、請求項3に記載し
た階高の異なる階段対応のプレキャストコンクリート階
段の製作方法において、双方の金物同士を溶接して一体
化した階段梁部と段部の隙間を注入したモルタルによっ
て埋めることを特徴とする。According to a fourth aspect of the present invention, there is provided a method for manufacturing a precast concrete staircase corresponding to a staircase having a different floor height according to the third aspect, wherein both metal parts are welded together to form a stair beam part and a step part. It is characterized in that the gap is filled with mortar injected.
【0008】[0008]
【発明の実施の形態及び実施例】図1は、請求項3及び
4記載の発明に係る階高の異なる階段対応のプレキャス
トコンクリート階段の製作方法の実施形態の一つの段階
として、蹴上げ段部と踏面部の無い階段梁部1と、上下
の踊り場部分2、3とを一連に成形したプレキャストコ
ンクリート部材Aを示している。また、図2は、蹴上げ
段部4と踏面部5を形成する段部Bを、側面から見て三
角柱状のプレキャストコンクリート部材として製作した
段階を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a step of a method of manufacturing a precast concrete stair corresponding to a stair having a different floor height according to the third and fourth aspects of the present invention. A precast concrete member A in which a stair beam portion 1 having no tread portion and upper and lower landing portions 2 and 3 are formed in series is shown. FIG. 2 shows a stage in which the stepped portion B forming the riser stepped portion 4 and the tread portion 5 is formed as a precast concrete member having a triangular prism shape when viewed from the side.
【0009】要するに、本発明は、図1のプレキャスト
コンクリート部材Aに、別体として製作された図2の段
部Bを、必要数だけ図5、図6のように一体的に取り付
けてPca階段を製作する方法である。階高の異なる階
段対応として、図1のプレキャストコンクリート部材A
は、例えば図7のような建物に設置施工することを前提
として、この建物の階高に適正な長さ、傾斜角度等々の
寸法仕様を設計して製作される。従って、Pca工場に
おいては、同一の製作ベッド(型枠)を数多く回転(使
用)して製作することができ、ローコスト化が可能であ
る。この階段梁部1の上面の傾斜方向には、前記の段部
Bを一体的に取り付ける溶接下地となる金物として、幅
50mm程度のフラットバー6が2列(但し、列数、金物
形態はこの限りではない。)打ち込まれている。In short, according to the present invention, the precast concrete member A shown in FIG. 1 is integrally provided with the necessary number of steps B shown in FIG. 2 as shown in FIGS. It is a method of manufacturing. Precast concrete member A shown in Fig. 1 for stairs with different floor heights
Is manufactured on the premise that it is installed and constructed in a building as shown in FIG. Therefore, in the Pca factory, the same production bed (form) can be produced by rotating (using) many times, and the cost can be reduced. In the direction of inclination of the upper surface of the staircase beam portion 1, two rows of flat bars 6 having a width of about 50 mm as hardware serving as a welding base for integrally attaching the stepped portion B (however, the number of rows and the metal shape are the same as those of the first embodiment). It is not limited.)
【0010】一方、前記段部Bの下底面部(斜面部)に
は、前記階段梁部1の上面の2列のフラットバー6、6
と接触する配置で、これと溶接する金物としての連結プ
レート7が2枚垂直に立てて打ち込まれている。連結プ
レート7と段部鉄筋8との取り合いの詳細を図3と図4
に示している。連結プレート7の両端部には、階段梁部
1のフラットバー6との接触部を溶接するのに必要な作
業スペースとして、連結プレート7を露出させる切り欠
き9、10が、幅50mm、深さ50mm程度の矩形溝状に
形成されている。On the other hand, on the lower bottom surface (slope) of the step B, two rows of flat bars 6, 6 on the upper surface of the stair beam 1 are provided.
In this arrangement, two connecting plates 7 as metal parts to be welded with the connecting plate 7 are driven upright. 3 and 4 show details of the connection between the connecting plate 7 and the stepped reinforcing bar 8.
Is shown in At both ends of the connecting plate 7, notches 9 and 10 for exposing the connecting plate 7 are provided as working spaces necessary for welding a contact portion of the stair beam 1 with the flat bar 6. It is formed in a rectangular groove shape of about 50 mm.
【0011】従って、前記段部Bは、前記階段梁部1の
上に、建物の階高に応じて割り付けたピッチで配置し、
双方のフラットバー6と連結プレート7とを溶接して一
体化される。前記切り欠き9、10は溶接棒の差し込み
に至便の空間を形成する。かくして一体化された階段梁
部1と段部Bとの隙間(前記切り欠き9、10も含む)
にモルタルを注入して密実に埋めると、Pca階段が完
成する(請求項1及び2記載の発明)。Therefore, the steps B are arranged on the stair beam 1 at a pitch assigned according to the floor height of the building,
The two flat bars 6 and the connection plate 7 are welded and integrated. The notches 9 and 10 form a space convenient for inserting the welding rod. The gap between the stair beam 1 and the step B thus integrated (including the notches 9 and 10).
When the mortar is injected and filled firmly, the Pca steps are completed (the invention according to claims 1 and 2).
【0012】上記プレキャストコンクリート部材Aの製
作、及び上記段部Bの製作、並びに段部Bをプレキャス
トコンクリート部材Aへ取り付ける工程は、それぞれ設
備の整ったPca部材の製作工場で行う。或いは輸送の
困難を考慮して、現場サイトに用意した製作所において
行う。いずれにしても、図5、図6のように完成したP
ca階段は、その両端に相当する上下の踊り場部分2、
3をねじ切りをした鉄筋11(又はワイヤー、鋼棒等で
も良い。)により吊って図7のように設置作業を行う。
そのため、図1のプレキャストコンクリート部材Aに
は、上下の踊り場部分2、3に鉄筋11を通す孔12が
予め複数設けられている。また、段部Bの両端部には、
図7に示した手すり13の縦支柱13aを建て付ける孔
14も予め設けられており、プレキャストコンクリート
部材Aの吊り込み前に、地上で手すり13の取付けも行
われる。The production of the precast concrete member A, the production of the stepped portion B, and the attachment of the stepped portion B to the precast concrete member A are performed in a Pca member production factory equipped with facilities. Alternatively, in consideration of transportation difficulties, it is performed at a manufacturing site prepared at the site of the site. In any case, the completed P as shown in FIGS.
The upper and lower landings 2, which correspond to both ends of the ca stairs,
3 is suspended by a threaded rebar 11 (or a wire, a steel bar, or the like), and the installation work is performed as shown in FIG.
Therefore, the precast concrete member A of FIG. 1 is provided with a plurality of holes 12 through which the reinforcing bar 11 passes in the upper and lower landing portions 2 and 3 in advance. Also, at both ends of the step B,
A hole 14 for erection of the vertical support 13a of the handrail 13 shown in FIG. 7 is also provided in advance, and the handrail 13 is attached on the ground before the precast concrete member A is suspended.
【0013】このPca階段の設置施工は、図5のよう
に鉄筋11で吊り込む関係上、最上階又は途中階から下
方階に向かって順次吊り込む作業として設置が行われ
る。その際、上下の踊り場部分2、3と建物躯体(壁
体)16との一体化施工を容易にするため、上下の踊り
場部分2、3の先端部からは当該プレキャストコンクリ
ート部材の鉄筋の一部15が突出されており、該鉄筋1
5を壁筋と接合して堅固な設置作業が行われる。従っ
て、このPca階段は、設置施工の直後から早々に建築
の作業用安全通路として使用することができる。The installation of the Pca stairs is performed as an operation of sequentially suspending the stairs from the top floor or the middle floor to the lower floor because the Pca stairs are suspended by the reinforcing bars 11 as shown in FIG. At this time, in order to facilitate the integrated construction of the upper and lower landing portions 2 and 3 and the building frame (wall body) 16, a part of the reinforcing steel of the precast concrete member from the tip of the upper and lower landing portions 2 and 3. 15 is projected, and the reinforcing bar 1
5 is joined to a wall bar to perform a firm installation work. Therefore, the Pca stairs can be used as a work safety passage for a building immediately after installation.
【0014】[0014]
【本発明が奏する効果】本発明に係る階高の異なる階段
対応のプレキャストコンクリート階段及びその製作方法
によれば、建物の階高の異なるPca階段を、同一の製
作ベッドを数多く回転して安価に製作することが可能で
ある。また、工場又は現場サイトの設備が整った場所で
高品質に実施でき、現場の型枠工事、仮設工事の省人化
と左官工事の省略を図れ、建築工事の作業用安全通路と
して早期使用が可能なプレキャストコンクリート階段及
びその製作方法を提供できる。According to the precast concrete stairs for stairs having different floor heights and the method of manufacturing the same according to the present invention, Pca stairs having different floor heights of a building can be inexpensively manufactured by rotating the same manufacturing bed many times. It is possible to produce. In addition, it can be implemented with high quality in a factory or on site where the equipment on the site is well-equipped, and it can save labor and temporary plastering work on site formwork and temporary work, and can be used early as a safety passage for construction work. A possible precast concrete staircase and a method of manufacturing the same can be provided.
【図1】本発明の製作方法で製作された階段梁部等の斜
視図である。FIG. 1 is a perspective view of a step beam portion and the like manufactured by a manufacturing method of the present invention.
【図2】本発明の製作方法で製作された段部の斜視図で
ある。FIG. 2 is a perspective view of a step manufactured by the manufacturing method of the present invention.
【図3】段部の垂直断面図である。FIG. 3 is a vertical sectional view of a step portion.
【図4】段部の蹴上げ面側の正面図である。FIG. 4 is a front view of a stepped portion on a rise surface side.
【図5】プレキャストコンクリート部材と段部を一体化
した正面図である。FIG. 5 is a front view in which a precast concrete member and a step portion are integrated.
【図6】プレキャストコンクリート部材と段部を一体化
した平面図である。FIG. 6 is a plan view in which a precast concrete member and a step portion are integrated.
【図7】Pca階段の取付け状態の立面図である。FIG. 7 is an elevational view of the mounting state of the Pca stairs.
4 蹴上げ段部 5 踏面部 1 階段梁部 2 踊り場部分 3 踊り場部分 A プレキャストコンクリート部材 5 フラットバー B 段部 7 連結プレート 4 Raised step part 5 Tread part 1 Stair beam part 2 Landing part 3 Landing part A Precast concrete member 5 Flat bar B Step part 7 Connecting plate
Claims (4)
り場部分とが一連のプレキャストコンクリート部材とし
て建物の階高に適正な寸法仕様で製作され、階段梁部の
上面の傾斜方向に溶接下地の金物が打ち込まれているこ
と、 蹴上げ段部と踏面部を形成する段部も側面から見て三角
柱状のプレキャストコンクリート部材として製作され、
該段部の下底面部に前記階段梁部の金物と接触する配置
で溶接用の金物が打ち込まれていること、 前記階段梁部の上に前記段部が建物の階高に応じて割り
付けたピッチで配置され、双方の金物同士を溶接して一
体化されていることを特徴とする、階高の異なる階段対
応のプレキャストコンクリート階段。1. A stair beam part and a landing part without a riser step, a tread part, and a landing part are manufactured as a series of precast concrete members with dimensions appropriate for the floor height of a building, and are welded in the direction of inclination of the upper surface of the stair beam part. The base metal is driven in. The step that forms the riser step and the tread is also made as a triangular prism-shaped precast concrete member when viewed from the side.
The metal fittings for welding are driven into the lower bottom part of the step in contact with the metal of the stair beam, and the step is allocated on the stair beam according to the floor height of the building. Precast concrete stairs for stairs with different floor heights, which are arranged at a pitch and integrated by welding both metal parts together.
階段梁部と段部の隙間は注入したモルタルによって埋め
られていることを特徴とする、請求項1に記載した階高
の異なる階段対応のプレキャストコンクリート階段。2. The step height difference according to claim 1, wherein a gap between the stair beam portion and the step portion integrated by welding the two metal pieces together is filled with mortar injected. Precast concrete stairs for stairs.
り場部分とを一連のプレキャストコンクリート部材とし
て、建物の階高に適正な寸法仕様で、且つ階段梁部の上
面の傾斜方向に溶接下地の金物を打ち込んで製作する工
程と、 蹴上げ段部と踏面部を形成する段部を側面から見て三角
柱状のプレキャストコンクリート部材として、且つ該段
部の下底面部に前記階段梁部の金物と接触する配置で溶
接用の金物を打ち込んで製作する工程と、 前記階段梁部の上面に前記段部を建物の階高に応じて割
り付けたピッチで配置し双方の金物同士を溶接して一体
化する工程とから成ることを特徴とする、階高の異なる
階段対応のプレキャストコンクリート階段の製作方法。3. A series of precast concrete members made of a stair beam portion and a landing portion having no riser step portion, no tread portion, and welded in a direction appropriate for the floor height of the building and in an inclined direction of the upper surface of the stair beam portion. A step of driving a base metal part into a production step, and a step part forming a riser step part and a tread part part as a precast concrete member having a triangular prism shape when viewed from the side, and a metal part of the stair beam part on the lower bottom part of the step part. A step of manufacturing by welding a metal fitting for welding in an arrangement in contact with the stairs, and arranging the steps on the upper surface of the stair beam at a pitch allocated according to the floor height of the building, and welding both metal parts together to form A method of manufacturing a precast concrete staircase for stairs having different floor heights.
段梁部と段部の隙間を注入したモルタルによって埋める
ことを特徴とする、請求項3に記載した階高の異なる階
段対応のプレキャストコンクリート階段の製作方法。4. The precast for stairs having different floor heights according to claim 3, wherein a gap between the stepped beam portion and the stepped portion is welded and integrated with each other by welding, and is filled with mortar. How to make concrete stairs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10110331A JPH11303349A (en) | 1998-04-21 | 1998-04-21 | Precast concrete stairs corresponding to stairs of different floor height, and manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10110331A JPH11303349A (en) | 1998-04-21 | 1998-04-21 | Precast concrete stairs corresponding to stairs of different floor height, and manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11303349A true JPH11303349A (en) | 1999-11-02 |
Family
ID=14533043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10110331A Pending JPH11303349A (en) | 1998-04-21 | 1998-04-21 | Precast concrete stairs corresponding to stairs of different floor height, and manufacture thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11303349A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101365484B1 (en) * | 2011-11-29 | 2014-02-21 | 최원옥 | stairs structure using the earthquake-resistance assembling stairs block |
CN104631719A (en) * | 2015-01-23 | 2015-05-20 | 山东科技大学 | Prefabricated reinforced concrete shockproof stair and construction method |
-
1998
- 1998-04-21 JP JP10110331A patent/JPH11303349A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101365484B1 (en) * | 2011-11-29 | 2014-02-21 | 최원옥 | stairs structure using the earthquake-resistance assembling stairs block |
CN104631719A (en) * | 2015-01-23 | 2015-05-20 | 山东科技大学 | Prefabricated reinforced concrete shockproof stair and construction method |
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