JP7058404B1 - A refractory staircase made by filling a box-shaped steel plate with bassa mortar. - Google Patents

A refractory staircase made by filling a box-shaped steel plate with bassa mortar. Download PDF

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JP7058404B1
JP7058404B1 JP2022000073A JP2022000073A JP7058404B1 JP 7058404 B1 JP7058404 B1 JP 7058404B1 JP 2022000073 A JP2022000073 A JP 2022000073A JP 2022000073 A JP2022000073 A JP 2022000073A JP 7058404 B1 JP7058404 B1 JP 7058404B1
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美藤雅康
美藤町子
北村知世
横畑直世
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美藤 雅康
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Abstract

【課題】本発明は、迅速且つ容易に造れて工事費も安価に造れる、鋼板の箱型板材内にバサモルタルを充填して造る耐火階段を提供する。【解決手段】鋼板1で上部に開口部2を設けて箱型に曲げ加工して成る階段の箱型材3、該箱型材3の壁固定部に補強板4を添え固定して複数のビス穴5を開けて、底板の上に複数の穴を設けた補強材6を固定して成る箱型段板材A、該箱型段板材Aを複数用いて、該箱型段板材A各々の前記壁固定部をビス7で壁に固定して箱型段板材Aの階段を成し、前記箱型段板材A内にバサモルタル8を充填して、天端を鏝9で均してバサモルタル8の凝固によって耐火構造の階段Cを形成することを特徴とする鋼板の箱型板材内にバサモルタルを充填して造る耐火階段。【選択図】 図7PROBLEM TO BE SOLVED: To provide a refractory staircase made by filling a box-shaped plate material of a steel plate with bassa mortar, which can be manufactured quickly and easily and at low construction cost. SOLUTION: A box-shaped material 3 of a staircase made of a steel plate 1 having an opening 2 provided at an upper portion and bent into a box shape, and a reinforcing plate 4 is attached to and fixed to a wall fixing portion of the box-shaped material 3 to fix a plurality of screw holes. A box-shaped step board A formed by opening 5 and fixing a reinforcing material 6 having a plurality of holes on the bottom plate, and using a plurality of the box-shaped step board A, the wall of each of the box-shaped step board A. The fixed part is fixed to the wall with a screw 7 to form a staircase of the box-shaped step board A, the box-shaped step board A is filled with the basa mortar 8, and the top end is leveled with the iron 9 to solidify the basa mortar 8. A fire-resistant staircase made by filling a box-shaped plate material of steel plate with bassa mortar, which is characterized by forming a fire-resistant structure staircase C. [Selection diagram] Fig. 7

Description

本発明は、多層階の防災住宅や防災構築物に取付ける耐火階段で、鋼板の箱型板材内にコンクリートを充填して造る耐火階段に関する。 The present invention relates to a fire-resistant staircase to be attached to a multi-story disaster-prevention house or a disaster-prevention structure, and is constructed by filling concrete in a box-shaped steel plate.

従来の簡易耐火構造や耐火構造の防災住宅や防災構築物の階段は、簡易耐火構造の階段は厚い鋼板が主に使用され、耐火構造の階段は鉄筋コンクリート造で造られている。 As for the stairs of conventional simple fireproof structures and disaster prevention houses and disaster prevention structures, thick steel plates are mainly used for the stairs of the simple fireproof structure, and the stairs of the fireproof structure are made of reinforced concrete.

簡易耐火構造構築物の階段に使用している厚い鋼板は鉄が大半である。 Most of the thick steel plates used for the stairs of simple fireproof structures are made of iron.

耐火構造構築物(鉄筋コンクリート造)の階段は躯体と一体の構造で造られている。 The stairs of the fireproof structure (reinforced concrete) are constructed integrally with the skeleton.

しかしながら、簡易耐火構造構築物の階段や耐火構造構築物(鉄筋コンクリート造)の階段には、いずれも致命的な欠点があるのが現状である。 However, the current situation is that both the stairs of a simple fireproof structure and the stairs of a fireproof structure (reinforced concrete) have fatal drawbacks.

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無しNone

在来の簡易耐火構造構築物の階段や耐火構造構築物の階段には次の課題があった。
〇鉄で造る簡易耐火構造の階段は鉄が錆びる課題。
〇躯体と同じ鉄筋コンクリート造で造る階段は工期が長く工事費が高くつく課題。
The stairs of the conventional simple fireproof structure and the stairs of the fireproof structure had the following problems.
〇 The problem of iron rusting on stairs with a simple fireproof structure made of iron.
〇 The stairs made of the same reinforced concrete structure as the skeleton have a long construction period and high construction costs.

本発明は、上記の課題に鑑みて、迅速且つ容易に造れて工事費も安価に造れる、鋼板の箱型板材内にバサモルタルを充填して造る耐火階段を提供するものである。 In view of the above problems, the present invention provides a refractory staircase made by filling a box-shaped steel plate with bassa mortar, which can be made quickly and easily and at low construction cost.

この発明は、上記の課題を解決するためになされたもので、鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材、該箱型段板材を複数用いて、該箱型段板材各々の前記壁固定部をビスで壁に固定して箱型段板材の階段を成し、前記箱型段板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の階段を形成することを特徴とする鋼板の箱型板材内にバサモルタルを充填して造る耐火階段(請求項1)を提供する。 The present invention has been made to solve the above-mentioned problems, and is a box-shaped material for a staircase made of a steel plate having an opening at the top and bent into a box-shaped material, and a reinforcing plate is provided on a wall fixing portion of the box-shaped material. A box-shaped step board material made by fixing and fixing a plurality of screw holes and fixing a reinforcing material having a plurality of holes on the bottom plate, and using a plurality of the box-shaped step board materials, each of the box-shaped step board materials. The wall fixing part of the above is fixed to the wall with screws to form a staircase of the box-shaped step board, the box-shaped step board is filled with bassa mortar, the top end is leveled with a chisel, and the fireproof structure is formed by solidifying the bassa mortar. The present invention provides a fireproof staircase (claim 1), which is formed by filling a box-shaped plate material of a steel plate, which is characterized by forming a staircase, with bassa mortar.

鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材又は箱型の踊り場板材、該箱型段板材又は箱型の踊り場板材の、前記壁固定部をビスで壁に固定して、箱型段板材又は箱型の踊り場板材内にバサモルタルを充填することで、箱型段板材又は箱型の踊り場板材が、前記複数の穴を設けた補強材が一体ととなって、前記箱型段板材又は箱型の踊り場板材の強度が増すことを特徴とする鋼板の箱型板材内にコンクリートを充填して造る耐火階段(請求項2)を提供する。 A box-shaped material for stairs that is made of steel plate with an opening at the top and bent into a box-shaped material. The wall fixing portion of the box-shaped step board or box-shaped landing board, or the box-shaped step board or box-shaped landing board, which is made by fixing the reinforcing material provided with the holes, is fixed to the wall with screws to form a box. By filling the mold step board or the box-shaped landing board with bassa mortar, the box-shaped step board or the box-shaped landing board is integrated with the reinforcing material having the plurality of holes, and the box-shaped step is formed. Provided is a fireproof staircase (claim 2) made by filling concrete in a box-shaped plate material of a steel plate, which is characterized by increasing the strength of the plate material or a box-shaped landing plate material.

鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた複数の補強材を固定して成る箱型の踊り場板材、該箱型の踊り場板材を、前記壁固定部をビスで壁に固定して箱型の踊り場板材を成し、前記箱型の踊り場板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の踊り場を形成することを特徴とする請求項1又は2に記載の鋼板の箱型板材内にバサモルタルを充填して造る耐火階段(請求項3)を提供する。 A box-shaped material for stairs that is made of a steel plate with an opening at the top and bent into a box shape. A box-shaped landing board made by fixing a plurality of reinforcing materials provided with holes, the box-shaped landing board, and the wall fixing portion fixed to the wall with screws to form a box-shaped landing board. The box-shaped plate material of a steel plate according to claim 1 or 2, wherein the box-shaped landing plate material is filled with bassa mortar, the top end is leveled with a sword, and the landing of a fireproof structure is formed by solidification of the bassa mortar. Provided is a fireproof staircase (claim 3) made by filling the inside with bassa mortar.

本発明の特筆すべき大きな効果を列挙する。
イ)成型部材で造る多層階の構築物の場合、仮設階段として活用ができる。
ロ)迅速且つ容易に取付けることが可能である。
ハ)箱型段板材や箱型の踊り場板材の量産が可能である。
二)箱型段板材や箱型の踊り場板材は軽量で作業性に優れている。
ホ)バサモルタルの注入で耐火階段となる。
The significant effects of the present invention are listed.
B) In the case of a multi-story structure made of molded members, it can be used as a temporary staircase.
B) It can be installed quickly and easily.
C) It is possible to mass-produce box-shaped step boards and box-shaped landing boards.
2) Box-shaped step boards and box-shaped landing boards are lightweight and have excellent workability.
E) It becomes a refractory staircase by injecting bassa mortar.

以上で説明したように、請求項1に係る発明によれば、鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材、該箱型段板材を複数用いて、該箱型段板材各々の前記壁固定部をビスで壁に固定して箱型段板材の階段を成し、前記箱型段板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の階段を形成することで、前記特筆の効果が得られる As described above, according to the invention of claim 1, a box-shaped material of a staircase made of a steel plate having an opening at the top and bent into a box-shaped material, and a reinforcing plate are provided on a wall fixing portion of the box-shaped material. A box-shaped step board material made by fixing and fixing a plurality of screw holes and fixing a reinforcing material having a plurality of holes on the bottom plate, and using a plurality of the box-shaped step board materials, each of the box-shaped step board materials. The wall fixing part of the above is fixed to the wall with screws to form a staircase of the box-shaped step board, the box-shaped step board is filled with bassa mortar, the top end is leveled with a chisel, and the fireproof structure is formed by solidifying the bassa mortar. By forming the stairs of, the above-mentioned special effect can be obtained.

請求項2に係る発明によれば、鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材又は箱型の踊り場板材、該箱型段板材又は箱型の踊り場板材の、前記壁固定部をビスで壁に固定して、箱型段板材又は箱型の踊り場板材内にバサモルタルを充填することで、箱型段板材又は箱型の踊り場板材が、前記複数の穴を設けた補強材が一体ととなって、前記箱型段板材又は箱型の踊り場板材の強度が増す効果が得られる。 According to the invention of claim 2, a box-shaped material of a staircase made of a steel plate having an opening at the upper part and bent into a box-shaped material, and a plurality of screws fixed by attaching a reinforcing plate to the wall fixing portion of the box-shaped material. The wall fixing portion of a box-shaped step board or a box-shaped landing board, a box-shaped step board or a box-shaped landing board made by making holes and fixing a reinforcing material having a plurality of holes on the bottom plate. Is fixed to the wall with screws, and the box-shaped step board or the box-shaped landing board is filled with bassa mortar, so that the box-shaped step board or the box-shaped landing board can be made of the reinforcing material with the plurality of holes. Together, the effect of increasing the strength of the box-shaped step board or the box-shaped landing board can be obtained.

請求項3に係る発明によれば、鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた複数の補強材を固定して成る箱型の踊り場板材、該箱型の踊り場板材を、前記壁固定部をビスで壁に固定して箱型の踊り場板材を成し、前記箱型の踊り場板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の踊り場を形成することで、前記特筆の効果が得られる According to the invention of claim 3, a box-shaped material of a staircase made of a steel plate having an opening at the top and bent into a box shape, and a plurality of screws fixed by attaching a reinforcing plate to the wall fixing portion of the box-shaped material. A box-shaped landing board material made by making holes and fixing a plurality of reinforcing materials having a plurality of holes on the bottom plate, and the box-shaped landing board material, the wall fixing portion is fixed to the wall with screws. By forming a box-shaped landing board, filling the box-shaped landing board with bassa mortar, leveling the top with a sword, and forming a landing with a fireproof structure by solidifying the bassa mortar, the above-mentioned special effect can be achieved. can get

以下に、本発明の実施形態は添付図面を参照しつつ詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図1は、本発明に係る直階段の断面図。図2は、直階段の平面図。図3は、曲がり階段の断面図。図4は、曲がり階段の平面図。図5は、箱型段板材の平面拡大図。図6は、図5の断面図。図7は、図4の箱型踊り場段板材の平面図。図8は、図7の断面図。図9は、図1A部の拡大詳細図。図10は、図8B部の拡大詳細図。図11は、図8C部の拡大詳細図である。 FIG. 1 is a cross-sectional view of a straight staircase according to the present invention. FIG. 2 is a plan view of a straight staircase. FIG. 3 is a cross-sectional view of a curved staircase. Figure 4 is a plan view of a curved staircase. Figure 5 is an enlarged plan view of the box-shaped step board. FIG. 6 is a cross-sectional view of FIG. FIG. 7 is a plan view of the box-shaped landing stage board of FIG. FIG. 8 is a cross-sectional view of FIG. 7. FIG. 9 is an enlarged detailed view of FIG. 1A. FIG. 10 is an enlarged detailed view of FIG. 8B. FIG. 11 is an enlarged detailed view of FIG. 8C.

本発明の実施形態を図面で詳細説明すれば、図1は、0.35mm厚の鋼板1で上部に開口部2を設けて箱型に曲げ加工して成る階段の箱型材3、該箱型材3の壁固定部に3.2mm厚の補強板4を添え固定して複数のビス穴5を開けて、底板の上に複数の角穴を設けた3.2mm厚の補強材6を固定して成る箱型段板材A、該箱型段板材Aを複数用いて、該箱型段板材A各々の前記壁固定部をビス7で壁に固定して箱型段板材Aの階段を成し、前記箱型段板材A内にバサモルタル8を充填して、天端を鏝9で均してバサモルタル8の凝固によって耐火構造の階段Cを形成することで、迅速且つ容易に低コストで耐火階段が造れる本発明に係る直階段の断面図である。 Explaining the embodiment of the present invention in detail with reference to the drawings, FIG. 1 shows a box-shaped material 3 of a staircase made of a steel plate 1 having a thickness of 0.35 mm, provided with an opening 2 at the top and bent into a box shape, and the box-shaped material 3. A box made by attaching a 3.2 mm thick reinforcing plate 4 to the wall fixing part of the box, making a plurality of screw holes 5, and fixing a 3.2 mm thick reinforcing material 6 having a plurality of square holes on the bottom plate. Using a plurality of mold step plate materials A and the box type step plate material A, the wall fixing portions of each of the box type step plate materials A are fixed to the wall with screws 7 to form a staircase of the box type step plate material A, and the box is formed. A book that can quickly and easily build a fire-resistant staircase at low cost by filling the mold step plate A with bassa mortar 8 and leveling the top edge with a sword 9 to form a fire-resistant staircase C by solidifying the bassa mortar 8. It is sectional drawing of the straight stairs which concerns on invention.

図2は、直階段の平面図である。 FIG. 2 is a plan view of a straight staircase.

図3は、箱型踊り場板材を示した曲がり階段の断面図である。 FIG. 3 is a cross-sectional view of a curved staircase showing a box-shaped landing board material.

図4は、曲がり階段の平面図である。 FIG. 4 is a plan view of a curved staircase.

図5は、箱型段板材の平面拡大図である FIG. 5 is an enlarged plan view of the box-shaped step board material.

図6は、図5の断面図である。 FIG. 6 is a cross-sectional view of FIG.

図7は、図4の箱型踊り場段板材の平面図である。 FIG. 7 is a plan view of the box-shaped landing step board material of FIG.

図8は、図7の断面図である。 FIG. 8 is a cross-sectional view of FIG. 7.

図9は、図1A部の拡大詳細図である。 FIG. 9 is an enlarged detailed view of FIG. 1A.

図10は、図8B部の拡大詳細図である。 FIG. 10 is an enlarged detailed view of FIG. 8B.

図11は、図8C部の拡大詳細図である。 FIG. 11 is an enlarged detailed view of FIG. 8C.

以上、図面について説明したが、本発明は、防災構築物の耐火階段が迅速且つ容易に造れて工事費も安価に造れる、鋼板の箱型板材内にバサモルタルを充填して造る耐火階段を提供するものである。 Although the drawings have been described above, the present invention provides a fire-resistant staircase made by filling a box-shaped plate material of a steel plate with bassa mortar so that a fire-resistant staircase of a disaster prevention structure can be quickly and easily constructed at low construction cost. Is.

0.35mm厚の鋼板1で上部に開口部2を設けて箱型に曲げ加工して成る階段の箱型材3、該箱型材3の壁固定部に3.2mm厚の補強板4を添え固定して複数のビス穴5を開けて、底板の上に複数の角穴を設けた3.2mm厚の補強材6を固定して成る箱型段板材A、該箱型段板材Aを複数用いて、該箱型段板材A各々の前記壁固定部をビス7で壁に固定して箱型段板材Aの階段を成し、前記箱型段板材A内にバサモルタル8を充填して、天端を鏝9で均してバサモルタル8の凝固によって耐火構造の階段Cを形成することで、迅速且つ容易に低コストで耐火階段が造れる。 A box-shaped material 3 of a staircase made of a 0.35 mm-thick steel plate 1 with an opening 2 provided at the top and bent into a box shape, and a 3.2 mm-thick reinforcing plate 4 is attached to and fixed to the wall fixing part of the box-shaped material 3. A box-shaped step plate material A formed by drilling a plurality of screw holes 5 and fixing a 3.2 mm-thick reinforcing material 6 having a plurality of square holes on the bottom plate, and the box-shaped step plate material A are used in combination. The wall fixing part of each box-shaped step board A is fixed to the wall with screws 7 to form a staircase of the box-shaped step board A, and the box-shaped step board A is filled with bassa mortar 8 and the top end is squeezed. By forming a fire-resistant staircase C by solidifying the basa mortar 8 by leveling with 9, a fire-resistant staircase can be constructed quickly and easily at low cost.

異常気象で多発する自然災害の悲惨な被災報道が日常化する中で、我が国の防災化は喫緊の課題であるが、我が国で唯一防災構築物が造れる鉄筋コンクリート造は、高コストで防災構築物を迅速に建設推進することは不可能である。本発明者が開発した特許第6688960号で造る防災住宅に、本発明の鋼板の箱型板材内にバサモルタルを充填して造る耐火階段を搭載することで、迅速且つ容易に低コストで防災住宅が造れることになり、防災住宅を全国へ普及することで、我が国の防災化は確実に推進できる、その効果は多大である。 Disaster prevention in Japan is an urgent issue amid the daily reports of the tragic damage caused by natural disasters that occur frequently due to abnormal weather. It is impossible to promote construction. By mounting a fire-resistant staircase made by filling the box-shaped plate material of the steel plate of the present invention with a fire-resistant staircase in the disaster-prevention house constructed by Patent No. 6688960 developed by the present invention, the disaster-prevention house can be quickly and easily made at low cost. By spreading disaster prevention housing nationwide, we can surely promote disaster prevention in Japan, and the effect is great.

本発明に係る直階段の断面図。Sectional drawing of the straight staircase which concerns on this invention. 直階段の平面図。Plan view of the straight stairs. 曲がり階段の断面図。Cross section of a curved staircase. 曲がり階段の平面図。Floor plan of a curved staircase. 箱型段板材の平面拡大図。A plan enlarged view of the box-shaped step board material. 図5の断面図。Sectional view of FIG. 図4の箱型踊り場段板材の平面図。Top view of the box-shaped landing step board of FIG. 4. 図7の断面図。Sectional view of FIG. 図1A部の拡大詳細図。Figure 1 Enlarged detailed view of part A. 図8B部の拡大詳細図。Fig. 8 Enlarged detailed view of part B. 図8C部の拡大詳細図である。FIG. 8 is an enlarged detailed view of part C.

1. 鋼板
2. 開口部
3. 箱型材
4. 補強板
5. ビス穴
6. 補強材
7. ビス
8. バサモルタル
9. 鏝
10. 蹴込み板
A、箱型段板材
B、箱型踊り場板材
C、耐火構造の階段









































1. Steel plate
2. Opening
3. Box profile material
4. Reinforcing plate
5. Screw hole
6. Reinforcing material
7. Bis
8. Basa mortar
9. Trowel
10. Rise board
A, Box type step board material
B, box-shaped landing board material
C, fireproof stairs









































Claims (3)

鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材、該箱型段板材を複数用いて、該箱型段板材各々の前記壁固定部をビスで壁に固定して箱型段板材の階段を成し、前記箱型段板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の階段を形成することを特徴とする鋼板の箱型板材内にバサモルタルを充填して造る耐火階段。 A box-shaped material for stairs that is made of a steel plate with an opening at the top and bent into a box shape. A box-shaped step board material made by fixing a reinforcing material provided with holes, and a box-shaped step board material in which the wall fixing portions of each of the box-shaped step board materials are fixed to the wall with screws. In the box-shaped plate material of the steel plate, which is characterized in that the stairs of the above-mentioned box-shaped step plate material are filled with bassa mortar, the top end is leveled with an iron, and the stairs of the fireproof structure are formed by solidification of the bassa mortar. A fireproof staircase made by filling with bassa mortar. 鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた補強材を固定して成る箱型段板材又は箱型の踊り場板材、該箱型段板材又は箱型の踊り場板材の、前記壁固定部をビスで壁に固定して、箱型段板材又は箱型の踊り場板材内にバサモルタルを充填することで、箱型段板材又は箱型の踊り場板材が、前記複数の穴を設けた補強材が一体ととなって、前記箱型段板材又は箱型の踊り場板材の強度が増すことを特徴とする鋼板の箱型板材内にバサモルタルを充填して造る耐火階段。 A box-shaped material for stairs that is made of steel plate with an opening at the top and bent into a box-shaped material. The wall fixing portion of the box-shaped step board or box-shaped landing board, or the box-shaped step board or box-shaped landing board, which is made by fixing the reinforcing material provided with the holes, is fixed to the wall with screws to form a box. By filling the mold step board or the box-shaped landing board with bassa mortar, the box-shaped step board or the box-shaped landing board is integrated with the reinforcing material provided with the plurality of holes, and the box-shaped step is formed. A fireproof staircase made by filling a box-shaped board of steel plate with bassa mortar, which is characterized by increasing the strength of the board or box-shaped landing board. 鋼板で上部に開口部を設けて箱型に曲げ加工して成る階段の箱型材、該箱型材の壁固定部に補強板を添え固定して複数のビス穴を開けて、底板の上に複数の穴を設けた複数の補強材を固定して成る箱型の踊り場板材、該箱型の踊り場板材を、前記壁固定部をビスで壁に固定して箱型の踊り場板材を成し、前記箱型の踊り場板材内にバサモルタルを充填して、天端を鏝で均してバサモルタルの凝固によって耐火構造の踊り場を形成することを特徴とする請求項1又は2に記載の鋼板の箱型板材内にバサモルタルを充填して造る耐火階段。 A box-shaped material for stairs that is made of a steel plate with an opening at the top and bent into a box shape. A box-shaped landing board made by fixing a plurality of reinforcing materials provided with holes, the box-shaped landing board, and the wall fixing portion fixed to the wall with screws to form a box-shaped landing board. The box-shaped plate material of a steel plate according to claim 1 or 2, wherein the box-shaped landing plate material is filled with bassa mortar, the top end is leveled with a sword, and the landing of a fireproof structure is formed by solidification of the bassa mortar. A fireproof staircase made by filling the inside with bassa mortar.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH042821U (en) * 1990-04-24 1992-01-10
JPH07197614A (en) * 1994-01-07 1995-08-01 Nagashimaya:Kk Prefabricated treads for steel-made assembling staircase and construction method thereof
JPH08284355A (en) * 1995-04-11 1996-10-29 Yokomori Seisakusho:Kk Stair tread and manufacturing of stair
JPH08333856A (en) * 1995-06-08 1996-12-17 Chichibu Onoda Cement Corp Step for staircase and built-up staircase and inorganic board for step
JP2017089177A (en) * 2015-11-06 2017-05-25 田島ルーフィング株式会社 Repair method for iron outdoor stairway having mortar cast thereon
JP2018062818A (en) * 2016-10-14 2018-04-19 株式会社群鐵 Treadboard of steel staircase and steel staircase having the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH042821U (en) * 1990-04-24 1992-01-10
JPH07197614A (en) * 1994-01-07 1995-08-01 Nagashimaya:Kk Prefabricated treads for steel-made assembling staircase and construction method thereof
JPH08284355A (en) * 1995-04-11 1996-10-29 Yokomori Seisakusho:Kk Stair tread and manufacturing of stair
JPH08333856A (en) * 1995-06-08 1996-12-17 Chichibu Onoda Cement Corp Step for staircase and built-up staircase and inorganic board for step
JP2017089177A (en) * 2015-11-06 2017-05-25 田島ルーフィング株式会社 Repair method for iron outdoor stairway having mortar cast thereon
JP2018062818A (en) * 2016-10-14 2018-04-19 株式会社群鐵 Treadboard of steel staircase and steel staircase having the same

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