JP6739172B2 - Renovation method of the existing roof laid on the steel frame - Google Patents

Renovation method of the existing roof laid on the steel frame Download PDF

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JP6739172B2
JP6739172B2 JP2016007119A JP2016007119A JP6739172B2 JP 6739172 B2 JP6739172 B2 JP 6739172B2 JP 2016007119 A JP2016007119 A JP 2016007119A JP 2016007119 A JP2016007119 A JP 2016007119A JP 6739172 B2 JP6739172 B2 JP 6739172B2
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roof
fixture
fall prevention
prevention plate
steel
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舩木 元旦
元旦 舩木
山田 秀雄
秀雄 山田
和倫 西田
和倫 西田
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元旦ビューティ工業株式会社
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Description

本発明は、屋根撤去時の部材落下を防ぎ、屋内側の使用制限を最小限にすると共に、撤去した部材の回収を容易に行い、さらに新設屋根の種類にかかわらずに裏面側(室内側)の意匠性を高める鉄骨躯体に敷設された既存屋根の改修方法に関する。 INDUSTRIAL APPLICABILITY The present invention prevents the members from dropping when the roof is removed, minimizes the use limit on the indoor side, easily collects the removed members, and further, regardless of the type of the new roof, the back side (inside the room) The present invention relates to a method for repairing an existing roof laid on a steel frame structure that enhances the design.

従来、既存屋根の葺き替えには、既存屋根を撤去し、躯体に対して新設屋根を敷設する方法、既存屋根上に新設屋根を被せる方法の何れかが採用されることが多い。 Conventionally, to replace an existing roof, either a method of removing the existing roof and laying a new roof on the frame or a method of covering the existing roof with a new roof is often adopted.

前者は、屋根自体が新しくなるものの、既存屋根を撤去する工程を必要とするため、例えば一部の工場等のように屋内側が恒常的に使用されている建築物には、実質的に適用が困難であり、またその他の建築物においても、屋根の補修工事中は屋内側への落下物等が懸念されるため、屋内の使用が出来なくなるという問題があった。 The former has a new roof, but requires a process to remove the existing roof, so it is practically applicable to buildings where the indoor side is constantly used, such as some factories. It is difficult, and even in other buildings, there is a concern that objects may fall indoors during the roof repair work, making it impossible to use indoors.

一方、後者は、屋内側には大きな制限を受け無いため、例えば一部の工場等のように屋内側が恒常的に使用される建造物にも適した工法であり、本出願人も、特許文献1などにて、既存の波形屋根等を撤去することなく新設屋根を敷設する方法を提案してきた。
この特許文献1には、既設屋根上に新設屋根を重ね葺きするために重ね葺き用固定具を用い方法を提案している。
On the other hand, the latter is a construction method suitable for a building where the indoor side is constantly used, such as some factories, because the latter is not greatly restricted on the indoor side. In 1, etc., we have proposed a method of laying a new roof without removing the existing corrugated roof.
This patent document 1 proposes a method of using a stacking fixture for stacking a new roof on an existing roof.

特許3936917号公報Japanese Patent No. 3936917

しかしながら、前記特許文献1の構造では、表面上は新設屋根に覆われても、その裏面側(室内側)は、既存屋根が存在するため、室内側からの汚れ等が残り、視覚的な見栄えの悪さが残るという問題があった。 However, in the structure of Patent Document 1, even if the front surface is covered with a new roof, the rear surface (inside the room) has an existing roof, so that stains and the like from the inside remain, which is visually attractive. There was a problem that the badness remained.

そこで、本発明は、屋根撤去時の部材落下を防ぎ、屋内側の使用制限を最小限にすると共に、撤去した部材の回収を容易に行い、さらに新設屋根の種類にかかわらずに裏面側(室内側)の意匠性を高める鉄骨躯体に敷設された既存屋根の改修方法を提案することを目的とする。 Therefore, the present invention prevents the members from dropping when the roof is removed, minimizes the use restrictions on the indoor side, facilitates the recovery of the removed members, and further, regardless of the type of the new roof, the rear side (room The purpose is to propose a method of repairing an existing roof laid on a steel frame structure that enhances the design of the inside.

本発明は、上記に鑑み提案されたものであって、屋根材表面から鉛直方向に固定具を取り付けて複数の型鋼にて形成される鉄骨躯体に屋根材を敷設してなる既存屋根の改修方法であって、隣り合う型鋼間に、下面側が化粧面となる化粧面部の型鋼側の端縁から下方へ傾斜状に延在する傾斜面部を有し、落下物の室内側への落下を防止する落下防止板を配設する第1の工程と、既存屋根における前記屋根材と前記固定具とを分離すると共に該分離部分を前記傾斜面部上に導く第2の工程と、前記第2の工程にて分離した屋根材を撤去して新設屋根を敷設する第3の工程と、からなることを特徴とする鉄骨躯体に敷設された既存屋根の改修方法を提案するものである。 The present invention has been proposed in view of the above, and is a method for repairing an existing roof in which a fixing member is vertically attached from the surface of a roof material and the roof material is laid on a steel frame body formed of a plurality of shaped steels. In addition, between adjacent die steels, the lower surface side has an inclined surface portion that extends downward in an inclined manner from the edge of the decorative surface portion that is the decorative surface on the die steel side, and prevents falling objects from falling to the indoor side. In the first step of disposing the fall prevention plate, the second step of separating the roof material and the fixture in the existing roof and guiding the separated portion onto the inclined surface portion, and the second step. The present invention proposes a method for repairing an existing roof laid on a steel frame body, which comprises a third step of removing the roof material separated and laying a new roof.

また、本発明は、前記改修方法において、第2の工程は、屋根からの固定具の延出部分を切除するか、屋根からの固定具の延出部分を鉛直方向に押し込むかの何れか一方であることを特徴とする鉄骨躯体に敷設された既存屋根の改修方法をも提案する。
なお、「屋根からの固定具の延出部分」とは、屋根材で形成する屋根面上に固定具の先端部分が突出している部分を指すものである。
Further, in the present invention, in the repair method, the second step is to either cut off an extending portion of the fixture from the roof or push the extending portion of the fixture from the roof in a vertical direction. We also propose a method of repairing the existing roof laid on the steel frame, which is characterized by
The "extending portion of the fixture from the roof" refers to a portion where the tip portion of the fixture is projected on the roof surface formed by the roof material.

また、本発明は、前記改修方法において、落下防止板は、天井化粧材であることを特徴とする鉄骨躯体に敷設された既存屋根の改修方法をも提案する。 In addition, the present invention also proposes a method for repairing an existing roof laid on a steel frame body, wherein the fall prevention plate is a ceiling decorative material in the repair method.

本発明の既存屋根の改修方法は、屋根面の裏面側に、下面側が化粧面となる化粧面部の型鋼側の端縁から下方へ傾斜状に延在する傾斜面部を有し、落下物の室内側への落下を防止する落下防止板を配設する第1の工程、屋根材と固定具とを分離すると共に該分離部分を前記傾斜面部上に導く第2の工程、既存屋根を撤去して新設屋根を敷設する第3の工程の何れもそれぞれ容易に行うことができる。前記第2の工程にて傾斜面部上に導かれた分離部分は、この傾斜状の傾斜面部から前記型鋼へと滑り落ちるため、容易に回収可能である。
そして、配設した落下防止板により、屋根撤去時の部材落下を防ぐことができ、屋内側の使用制限を最小限にすると共に、撤去した部材の回収を容易に行うことができる。さらに、落下防止板が天井化粧材を兼ねる場合には、新設屋根の種類にかかわらずに裏面側(室内側)の意匠性を高めることができる。
The method for repairing an existing roof of the present invention has, on the rear surface side of the roof surface, an inclined surface portion that extends downward from the edge of the decorative steel portion of the decorative surface portion whose lower surface side is the decorative surface in a downward slope. The first step of disposing a fall prevention plate for preventing inward fall, the second step of separating the roof material and the fixture and guiding the separated portion onto the inclined surface portion, and removing the existing roof. Each of the third steps of laying a new roof can be easily performed. The separated portion introduced onto the inclined surface portion in the second step slides down from the inclined inclined surface portion to the shaped steel, and can be easily recovered.
Further, the arranged fall prevention plate can prevent the members from dropping at the time of removing the roof, minimize the use restriction on the indoor side, and can easily collect the removed members. Further, when the fall prevention plate also serves as the ceiling decorative material, it is possible to enhance the design of the rear surface (inside the room) regardless of the type of the new roof.

本発明の既存屋根の改修方法は、屋根面の裏面側に落下防止板を配設する第1の工程、屋根材と固定具とを分離する第2の工程、既存屋根を撤去して新設屋根を敷設する第3の工程の何れもそれぞれ容易に行うことができる。
そして、配設した落下防止板により、屋根撤去時の部材落下を防ぐことができ、屋内側の使用制限を最小限にすると共に、屋根側、即ち上方側から、撤去した部材の回収を容易に行うことができる。さらに、落下防止板が天井化粧材を兼ねる場合には、新設屋根の種類にかかわらずに裏面側(室内側)の意匠性を高めることができる。
The method for repairing an existing roof of the present invention includes a first step of disposing a fall prevention plate on the back side of a roof surface, a second step of separating a roof material and a fixture, and a new roof by removing the existing roof. Any of the third steps of laying can be easily performed.
Further, the fall prevention plate provided can prevent the members from dropping when the roof is removed, minimize the use limit on the indoor side, and facilitate the collection of the removed members from the roof side, that is, the upper side. It can be carried out. Further, when the fall prevention plate also serves as the ceiling decorative material, it is possible to enhance the design of the rear surface (inside the room) regardless of the type of the new roof.

本発明の第1実施例における第1の工程を示す断面図である。It is sectional drawing which shows the 1st process in 1st Example of this invention. 落下防止板を配設した後の状態を示す既存屋根の断面図である。It is sectional drawing of the existing roof which shows the state after arrange|positioning a fall prevention board. 第1実施例における第2の工程の途中を示す断面図である。It is sectional drawing which shows the middle of the 2nd process in 1st Example. 第1実施例における第3の工程を模式的に示す断面図である。It is sectional drawing which shows the 3rd process in 1st Example typically. 第2実施例における第1の工程を示す断面図である。It is sectional drawing which shows the 1st process in 2nd Example. 第3実施例における第1の工程を示す断面図である。It is sectional drawing which shows the 1st process in 3rd Example. 第4実施例における第1の工程を示す断面図である。It is sectional drawing which shows the 1st process in 4th Example. 第5実施例における第1の工程を示す断面図である。It is sectional drawing which shows the 1st process in 5th Example. (a)第6実施例における第1の工程を示す断面図、(b)用いた化粧カバーを示す正面図である。(A) It is sectional drawing which shows the 1st process in 6th Example, (b) It is a front view which shows the makeup cover used. 第7実施例における第2の工程を示す断面図である。It is sectional drawing which shows the 2nd process in 7th Example.

本発明の鉄骨躯体に敷設された既存屋根の改修方法は、落下防止板を配設する第1の工程と、屋根材と固定具とを分離する第2の工程と、屋根材を撤去して新設屋根を敷設する第3の工程と、からなる。 The method for repairing an existing roof laid on a steel frame body of the present invention is the first step of disposing the fall prevention plate, the second step of separating the roof material and the fixture, and removing the roof material. The third step is to lay a new roof.

前記本発明の改修対象である既存屋根は、屋根材表面から鉛直方向に固定具を取り付けて複数の型鋼にて形成される鉄骨躯体に屋根材を敷設してなる構成であって、屋根材としては、平板状や波板状のスレート板などの外装材が用いられるが、特に限定するものではない。
また、固定具としては、型鋼から鉛直方向に延在して屋根材を固定するものであれば、特にその具体的な構成は限定するものではない。なお、屋根材の表面に至る固定具の上端には締着具が配設され、下端は型鋼(の上フランジや下フランジ)に係合している。即ちこの固定具は、上端が締着具により、下端が型鋼への係合により,固定された状態であって、この固定具により型鋼と屋根材とが一体化されている。
例えば後述する図示実施例では、取付孔を備える波形スレート板を屋根材とし、J字状の固定ボルトを固定具とし、そのJ字状の下端を型鋼の上フランジに係合させると共に上端を前記屋根材に挿通させてナットを締着した構造の既存屋根を用いているが、特にこれに限定するものではなく、どのような構造でもよい。
The existing roof, which is the object of renovation of the present invention, is a configuration in which a roof material is laid on a steel frame body formed by a plurality of shaped steels by attaching a fixture in the vertical direction from the roof material surface, and as a roof material. The outer packaging material such as a flat plate or corrugated slate plate is used, but is not particularly limited.
The fixture is not particularly limited in its specific configuration as long as it extends vertically from the shape steel and fixes the roof material. A fastener is provided at the upper end of the fixture reaching the surface of the roof material, and the lower end is engaged with the shape steel (upper flange or lower flange). That is, in this fixture, the upper end is fixed by the fastening tool and the lower end is fixed by engaging with the shape steel, and the shape steel and the roof material are integrated by this fixing tool.
For example, in the illustrated embodiment described later, a corrugated slate plate having a mounting hole is used as a roofing material, a J-shaped fixing bolt is used as a fixture, and the J-shaped lower end is engaged with the upper flange of the shape steel and the upper end is An existing roof having a structure in which a nut is fastened by being inserted into a roof material is used, but the structure is not particularly limited to this, and any structure may be used.

まず、前記第1の工程について説明する。
第1の工程にて用いる落下防止板は、隣り合う型鋼間に配設されるものであって、落下物の室内側への落下を防止するものであれば、特にその具体的な構成を限定するものではなく、美観を損ねるものでなければ特に限定するものではないが、天井化粧板を兼ねるものであることが望ましい。新設屋根の種類にかかわらずに裏面側(室内側)の意匠性を高めることができるからである。
First, the first step will be described.
The fall prevention plate used in the first step is arranged between adjacent steel molds, and its specific configuration is particularly limited as long as it prevents fallen objects from falling inside the room. It is not particularly limited as long as it does not impair aesthetics, but it is desirable that it also serves as a ceiling decorative plate. This is because the design on the back side (inside the room) can be enhanced regardless of the type of new roof.

この落下防止板が天井化粧板を兼ねる場合には、例えば本出願人による特願2015−249491号に記載した構造(以下、先願構造という)を適用してもよい。
即ちこの先願構造では、予め型鋼に、補助材を固定しておき、この補助材と隣り合う型鋼との間に天井化粧材(落下防止板)を係止状に取り付ける構成を採用している。
より詳しくは、前記先願構造では、天井化粧材(落下防止板)の一方の端縁を型鋼に係止し、他方の端縁を隣り合う型鋼に固定した補助材に係止する構成である。
When this fall prevention plate also serves as a ceiling decorative plate, for example, the structure described in Japanese Patent Application No. 2015-249491 filed by the present applicant (hereinafter, referred to as prior application structure) may be applied.
That is, in this prior application structure, an auxiliary material is fixed to the shape steel in advance, and a ceiling decorative material (fall prevention plate) is attached in a locking manner between the auxiliary material and the adjacent shape steel.
More specifically, in the prior application structure, one edge of the ceiling decorative material (fall prevention plate) is locked to the shape steel, and the other edge is locked to the auxiliary material fixed to the adjacent shape steel. ..

前記先願構造における天井化粧材(落下防止板)は、下面側が化粧面となる化粧面部と、該化粧面部の左右からそれぞれ下方へ延在して少なくとも取付状態では型鋼の下フランジの上方、補助材の横片部の上方に押し込まれる押し込み片部と、該押し込み片部の下端に設けられる嵌合部と、を有する構成である。
また、前記補助材は、取付状態において型鋼のウエブに取り付けられる中央縦片部と、該中央縦片部の下端から型鋼の下フランジとは逆方向に延在する横片部とを有する構成である。
そして、予めそれぞれの型鋼に前記補助材を取り付け、間隔を隔てて突き合わされた前記型鋼の下フランジと前記補助材の横片部との間に、前記天井化粧材(落下防止板)を弾性に抗して押し込んで配設することにより、前記嵌合部を前記型鋼の下フランジ、前記補助材の横片部に弾性的に嵌合させて取り付けることができる。
なお、後述する図示実施例では、この補助材を、型鋼と略対称状に成型した形状のものを用い、天井化粧材(落下防止板)を左右対称状の部材として成形しているが、それに限定されるものではない。但し、この場合には、部材の生産に関しても取付作業(取付方向の誤りを生じない)においても利点が大きい
The ceiling decorative material (fall prevention plate) in the prior application structure has a decorative surface portion whose lower surface side is a decorative surface, and extends downward from the left and right sides of the decorative surface portion, respectively, and at least in an attached state, above the lower flange of the shaped steel and the auxiliary. This is a configuration including a pushing piece portion that is pushed over the lateral piece portion of the material, and a fitting portion that is provided at the lower end of the pushing piece portion.
Further, the auxiliary member is configured to have a central vertical piece portion attached to the web of the shaped steel in an attached state, and a horizontal piece portion extending from a lower end of the central vertical piece portion in a direction opposite to the lower flange of the shaped steel. is there.
Then, the auxiliary material is attached to each of the shape steels in advance, and the ceiling decorative material (fall prevention plate) is elastically provided between the lower flange of the shape steel and the lateral piece of the auxiliary material that are abutted at a distance. By arranging by pushing in against, the fitting portion can be elastically fitted and attached to the lower flange of the shaped steel and the lateral piece portion of the auxiliary material.
In the illustrated embodiment described later, this auxiliary material is molded in a shape substantially symmetrical to the shape steel, and the ceiling decorative material (fall prevention plate) is molded as a left-right symmetrical member. It is not limited. However, in this case, there are great advantages in terms of both the production of members and the mounting work (there is no error in the mounting direction).

前記補助材の取り付け対象である型鋼は、少なくともウエブ、下フランジを有するものであればよく、具体的には左右両方に下フランジを備えるH型鋼、I型鋼、左右の何れか一方のみに下フランジを備える溝型鋼、Z型鋼、L型鋼、更に下フランジの先端に上向き片を有するC型鋼(=リップ溝型鋼)、リップZ型鋼等が相当する。
上記型鋼の中でもリップを有するC型鋼、リップZ型鋼が望ましい。なお、これらの型鋼は、下フランジが同一方向に延在するように配設して母屋を形成するが、一部にはこの型鋼同士を背中合わせに接続して用いるようにしてもよい。
The type steel to which the auxiliary material is attached may have at least a web and a lower flange. Specifically, the H type steel having lower flanges on both the left and right sides, the I type steel, and the lower flange on only one of the left and right sides. Corresponding to a grooved steel, a Z-shaped steel, an L-shaped steel, a C-shaped steel (=lip grooved steel) having an upward piece at the tip of the lower flange, a lip Z-shaped steel, and the like.
Among the above type steels, C type steel and lip Z type steel having a lip are preferable. Although these shaped steels are arranged so that the lower flanges extend in the same direction to form a purlin, a part of these shaped steels may be connected back to back and used.

次に、前記第2の工程について説明する。
この工程では、既存屋根における屋根材と固定具とを分離するのであるが、屋根からの固定具の延出部分を切除するか、屋根からの固定具の延出部分を鉛直方向に押し込むかの何れか一方であることが望ましい。前述のように「屋根からの固定具の延出部分」とは、屋根材で形成する屋根面上に固定具の先端部分が突出している部分を指すので、後述する図示実施例では締着しているナットがその部分に相当するが、それぞれ工具を用いて容易に行うことができる。
そして、前者がC型鋼の上フランジ、下フランジに係止されている場合に有効であり、後者が上フランジに係止されている場合にのみ有効となる。
Next, the second step will be described.
In this process, the roof material and the fixture on the existing roof are separated, but whether the extension part of the fixture from the roof is cut off or the extension part of the fixture from the roof is pushed vertically. Either one is desirable. As described above, the "extending portion of the fixture from the roof" refers to a portion where the tip portion of the fixture is projected on the roof surface formed by the roofing material, so that it is tightened in the illustrated embodiment described later. The corresponding nut corresponds to that part, but it can be easily performed using a tool.
The former is effective when the upper flange and the lower flange of the C-shaped steel are locked, and is effective only when the latter is locked to the upper flange.

なお、前者のナット等の固定具の先端部分を切除する場合は、上方の圧力が解放されるので、型鋼と屋根材との一体化が解除され、上方から屋根材を容易に外すことができ、固定具(ボルト)は自重で下方へ落下する場合もある。
また、後者のナット等の固定具の先端部分を打突等にて鉛直方向に押し込む場合には、下方の圧力の解除が優先され、型鋼と屋根材との一体化が解除され、固定具(ボルト)は打突の圧力で下方へ落下する場合が多い。
When cutting off the tip part of the fixture such as the former nut, the upper pressure is released, so that the shape steel and the roof material are released from the integration, and the roof material can be easily removed from above. , The fixture (bolt) may fall downward by its own weight.
Also, when pushing the tip of the fixture such as the nut in the vertical direction by hitting or the like, priority is given to releasing the lower pressure, the integration of the shape steel and the roof material is released, and the fixture ( Bolts often fall downward due to impact pressure.

さらに、前記第3の工程について説明する。
この工程では、第2の工程にて分離した屋根材を撤去して新設屋根を敷設するが、前述のように第2の工程にて屋根材と固定具とは分離されているので、容易に屋根材を取り外して撤去することができる。
また、新設屋根については、特に限定するものではなく、例えば既存屋根を構成していた屋根材の新たな製品を用いるようにしてもよい。即ち新たな屋根材としては、平板状や波板状のスレート板などの外装材を用いるようにしてもよいが、特に限定するものではない。
Further, the third step will be described.
In this step, the roofing material separated in the second step is removed and a new roof is laid. However, as described above, the roofing material and the fixture are separated in the second step, so it is easy. The roofing material can be removed and removed.
In addition, the new roof is not particularly limited, and for example, a new product of the roof material that constitutes the existing roof may be used. That is, as the new roof material, an exterior material such as a slate plate having a flat plate shape or a corrugated plate shape may be used, but it is not particularly limited.

図1〜4に示す本発明の第1実施例の既存屋根の改修方法は、屋根面の裏面側に天井化粧板を兼ねる落下防止板1を配設する第1の工程と、屋根材5と固定具7とを分離する第2の工程と、既存屋根を撤去して新設屋根を敷設する第3の工程と、からなり、それぞれの工程を容易に行うことができる。
まず、図1は、落下防止板1を配設する第1の工程を模式的に示すものであり、落下防止板1を配設した後の状態は図2に示すとおりである。
また、図3は、屋根材5と固定具7とを分離する第2の工程の途中の状態を示すものである。
なお、図4は、第2の工程にて分離した屋根材を撤去して新設屋根8を敷設する第3の工程を模式的に示すものであり、新設屋根8は点線にて示している。
1 to 4, a method for repairing an existing roof according to the first embodiment of the present invention includes a first step of disposing a fall prevention plate 1 also serving as a ceiling decorative plate on the back surface side of a roof surface, and a roof material 5. It consists of a second step of separating the fixture 7 and a third step of removing the existing roof and laying a new roof, and each step can be easily performed.
First, FIG. 1 schematically shows the first step of disposing the fall prevention plate 1, and the state after disposing the fall prevention plate 1 is as shown in FIG.
Further, FIG. 3 shows a state in the middle of the second step of separating the roof material 5 and the fixture 7.
Note that FIG. 4 schematically shows a third step of removing the roof material separated in the second step and laying a new roof 8, and the new roof 8 is shown by a dotted line.

まず、前述のように図1に基づいて、第1の工程について説明する。
図1(a)に示すように、既存屋根に用いられる型鋼4は、縦方向に配されるウエブ41の両端(上下端)にフランジ43,42を有するリップ溝型鋼(C型鋼)であって、先端に上向きリップ421を備える下フランジ42は、図面右方へ延在している。なお、同図中に示される符号5は波形スレート板(屋根材)であり、6はその下面側に配設される木毛セメント板、7は前記屋根材5を固定する固定具(フックボルト)であって、この固定具7は、下端が型鋼4の上フランジ43の下向きリップ431に係合状に取り付けられ、上端にナット7bが屋根材5上に締着されている。
First, the first step will be described based on FIG. 1 as described above.
As shown in FIG. 1(a), the shape steel 4 used for the existing roof is a lip groove shape steel (C-shape steel) having flanges 43 and 42 at both ends (upper and lower ends) of a web 41 arranged in a vertical direction. The lower flange 42 having the upward lip 421 at its tip extends rightward in the drawing. Reference numeral 5 shown in the figure is a corrugated slate plate (roof material), 6 is a wood wool cement plate disposed on the lower surface side, and 7 is a fixture (hook bolt) for fixing the roof material 5. ), the lower end of the fixture 7 is engaged with the downward lip 431 of the upper flange 43 of the shape steel 4 and the nut 7b is fastened on the roof member 5 at the upper end.

前記既存屋根に対し、隣り合う型鋼4,4間に落下防止板1を配設するのであるが、この第1実施例では、それぞれの型鋼4に、補助材2を固定しておき、この補助材2と隣り合う型鋼4との間に落下防止板を係止状に取り付ける。 The fall prevention plate 1 is arranged between the adjacent shape steels 4 and 4 with respect to the existing roof. In the first embodiment, the auxiliary material 2 is fixed to each shape steel 4, and the auxiliary material 2 is fixed. A fall prevention plate is attached in a locking state between the material 2 and the adjacent shaped steel 4.

前記型鋼4に取り付けられる補助材2は、型鋼4の長さ方向に連続する長尺状であって、図1(b)に示すように取付状態において前記型鋼4のウエブ41にビス2bにて取り付けられる中央縦片部21と、該中央縦片部21の下端から前記下フランジ42とは逆方向に延在する横片部22と、を有する構成であって、それぞれの型鋼4に背中合わせ状に取り付けられる。即ち図では右向きに延在する前記型鋼4の下フランジ42に対し、この横片部22は左向きに延在する。 The auxiliary material 2 attached to the shape steel 4 is a long shape continuous in the length direction of the shape steel 4, and is attached to the web 41 of the shape steel 4 with screws 2b in the attached state as shown in FIG. 1(b). A structure having a central vertical piece portion 21 to be attached and a horizontal piece portion 22 extending from a lower end of the central vertical piece portion 21 in a direction opposite to the lower flange 42, and having a back-to-back shape with each of the shaped steels 4. Attached to. That is, in the figure, the lateral piece portion 22 extends leftward with respect to the lower flange 42 of the mold steel 4 extending rightward.

また、この補助材2は、前記型鋼4と略対称状に形成され、即ち前記型鋼(リップ溝型鋼)4の上向きリップ421に相当する上向き片221を有し、該上向き片221の高さは上向きリップ421と略同等である。
前記中央縦片部21は、前述のように取付状態において型鋼4のウエブ41に沿うものであり、この第1実施例では鉛直状の縦片状に形成した。
前記横片部22は、前述のように中央縦片部21の下端から前記下フランジ42とは逆方向に延在する。
The auxiliary member 2 has an upwardly facing piece 221 corresponding to the upwardly facing lip 421 of the shape steel 4 (lip groove type steel) 4, which is formed substantially symmetrically with the shape steel 4, and the height of the upwardly facing piece 221 is It is substantially the same as the upward lip 421.
As described above, the central vertical piece portion 21 extends along the web 41 of the shape steel 4 in the mounted state, and in the first embodiment, it is formed in a vertical vertical piece shape.
The horizontal piece portion 22 extends from the lower end of the central vertical piece portion 21 in the direction opposite to the lower flange 42 as described above.

隣り合う型鋼4,4間に配設される落下防止板1は、前述のようにこの第1実施例では厳密には補助材2と隣り合う型鋼4との間に配設するものであって、天井化粧材を兼ねるものであり、図1(c)に示すように左右対称状に成形されたものであって、下面側が化粧面となる化粧面部11と、該化粧面部11の左右からそれぞれ下方へ延在して少なくとも取付状態では型鋼4の下フランジ42、補助材2の横片部22の上方に押し込まれる押し込み片部12,13と、該押し込み片部12,13の下端に設けられる嵌合部14,15と、を有する構成である。
なお、図1(c)に示す落下防止板1は、取り付けられた状態(図2)の落下防止板1を抜き出して示した分解断面図であるから、実際の配設以前の落下防止板1は、左右の押し込み片部12,13がもっと広く拡開している。即ち図中の拡開角度より大きく成形されている。
As described above, the fall prevention plate 1 arranged between the adjacent mold steels 4 and 4 is strictly arranged between the auxiliary material 2 and the adjacent mold steels 4 in this first embodiment. 1 also serves as a ceiling decorative material, and is formed symmetrically as shown in FIG. 1C, and the decorative surface portion 11 whose lower surface side is the decorative surface, and the left and right sides of the decorative surface portion 11 respectively. It is provided at the lower flange 42 of the steel mold 4 which extends downward and is pushed up above the lateral piece portion 22 of the auxiliary member 2 and at the lower end of the pushing piece portions 12 and 13 in at least the attached state. The fitting portions 14 and 15 are provided.
Since the fall prevention plate 1 shown in FIG. 1C is an exploded cross-sectional view showing the fall prevention plate 1 in the attached state (FIG. 2), the fall prevention plate 1 before the actual arrangement is shown. The left and right push-in pieces 12, 13 are expanded more widely. That is, it is shaped larger than the expansion angle in the figure.

前記化粧面部11は、側面視が略平坦状(略水平状)に成形されているが、その前端及び後端は、折り下げられ(折り下げ片111)た形状である。なお、この第1実施例では落下防止板1をパンチングメタル製の成形板としたが、パンチングメタルの孔部は部材等が通過しにくいものを用いているので、以降の第2の工程にて、固定具7を押し込む作業を行っても、この固定具7を確実に受支することができ、室内側が安全なものとなる。 The decorative surface portion 11 is formed to have a substantially flat shape (a substantially horizontal shape) in a side view, and the front end and the rear end thereof have a folded shape (folding piece 111). In the first embodiment, the fall prevention plate 1 is formed of punching metal, but the hole of the punching metal is made of a material that does not allow members to easily pass therethrough. Even if the fixing tool 7 is pushed in, the fixing tool 7 can be reliably supported and received, and the indoor side becomes safe.

この落下防止板1の押し込み片部12,13は、前記化粧面部11を傾斜状に折り曲げた形状であって、その左方に位置する押し込み片部12は、取付状態では前記型鋼4の下フランジ42の上方に押し込まれる部位であり、その下端には嵌合部14が延設されている。また、この落下防止板1の右方に位置する押し込み片部13は、取付状態では前記補助材2の横片部22の上方に押し込まれる部位であり、その下端には嵌合部15が延設されている。 The push-in pieces 12 and 13 of the fall prevention plate 1 have a shape in which the decorative surface portion 11 is bent in an inclined shape, and the push-in piece 12 located on the left side thereof is the lower flange of the shaped steel 4 in the mounted state. It is a part that is pushed over 42, and a fitting portion 14 is extended at the lower end thereof. Further, the pushing piece portion 13 located on the right side of the fall prevention plate 1 is a portion pushed into the upper side of the lateral piece portion 22 of the auxiliary member 2 in the mounted state, and the fitting portion 15 extends at the lower end thereof. It is set up.

前述のように配設以前の押し込み片部12,13は、この図1(c)に示す拡開角度αより更に広く拡開して成形しているが、図中に白抜き矢印で示すようにこの落下防止板1を鉛直状に押し上げると、前記型鋼4の下フランジ42に押し込み片部12が接触することなく配設することはできないし、前記補助材2の横片部22に押し込み片部13が接触することなく配設することはできない。即ちこの落下防止板1(実際はもっと広く拡開している落下防止板1)を垂直方向に押し上げて取り付ける際に下フランジ42や横片部22の当接することにより、前記押し込み片部12,13がそれぞれ内側方向への弾性変形を受けることは明らかである。 As described above, the push-in pieces 12 and 13 before the disposition are formed by expanding to a wider angle than the expanding angle α shown in FIG. 1(c). When the fall prevention plate 1 is pushed up vertically, the pushing piece portion 12 cannot be arranged without coming into contact with the lower flange 42 of the shaped steel 4, and the pushing piece is pushed into the lateral piece portion 22 of the auxiliary member 2. It cannot be arranged without contacting the parts 13. In other words, when the fall prevention plate 1 (actually, the fall prevention plate 1 which is wider and wider) is pushed up in the vertical direction to be attached, the lower flange 42 and the lateral piece portion 22 are brought into contact with each other, so that the pushing piece portions 12 and 13 are pushed. It is clear that each of them undergoes elastic deformation in the inward direction.

また、この落下防止板1の左側の押し込み片部12の下端に延設される嵌合部14は、リップ溝型鋼である型鋼4に応じて下フランジ42及び上向きリップ421に沿うL字状に形成した。同様にこの落下防止板1の右側の押し込み片部13の下端に延設される嵌合部15は、前記補助材2の構成に応じて横片部22及び上向き片221に沿うL字状に形成した。 Further, the fitting portion 14 extending to the lower end of the pushing piece portion 12 on the left side of the fall prevention plate 1 has an L-shape along the lower flange 42 and the upward lip 421 according to the shape steel 4 which is the lip groove shape steel. Formed. Similarly, the fitting portion 15 extending to the lower end of the push-in piece 13 on the right side of the fall prevention plate 1 has an L-shape along the lateral piece 22 and the upward piece 221 depending on the configuration of the auxiliary member 2. Formed.

そして、前述のように配設以前の落下防止板1は、図示されている状態よりも左右の押し込み片部12,13がもっと広く拡開するように成形されているので、取り付けられた状態を示すこの図1(c)の落下防止板1では、左右の押し込み片部12,13がもっと外側方向へ弾性回復しようとする応力が作用し、それらの下端に延設された嵌合部14,15にもそれぞれ外側方向へ応力が作用している。そのため、嵌合部14は下フランジ42の上向きリップ421に弾性係合(圧接)し、嵌合部15は横片部22の上向き片221に弾性係合(圧接)する。 Further, as described above, the fall prevention plate 1 before the disposition is formed so that the left and right pushing piece portions 12 and 13 are more widely opened than in the state shown in the figure, so that the attached state is In the fall prevention plate 1 shown in FIG. 1(c), a stress that elastically recovers the left and right pushing pieces 12, 13 toward the outer side acts, and a fitting portion 14, extending to the lower end thereof, A stress also acts on each of 15 in the outward direction. Therefore, the fitting portion 14 elastically engages (presses) the upward lip 421 of the lower flange 42, and the fitting portion 15 elastically engages (presses) the upward piece 221 of the lateral piece 22.

この落下防止板1を取り付けた状態を示す図2の状態は、間隔を隔てて突き合わされた前記型鋼4の下フランジ42と前記補助材2の横片部22との間に、前記落下防止板1を弾性に抗して配設した構成であって、左方に位置する嵌合部14を前記型鋼4の下フランジ42(上向きリップ421)に、右方に位置する嵌合部15を前記補助材2の横片部22(上向き片221)にそれぞれ弾性的に嵌合させたものである。
このように、天井方向へ押し上げるという簡易な操作にて落下防止板1を容易に且つ確実に型鋼4及び補助材2に固定することができる。しかもこの第1実施例では、前述のように落下防止板1が左右対称状に成形されたものである。そのため、この落下防止板1の設計、成形を容易に行うことができ、またその取付作業に際しても、取付方向の誤りを生ずることがない。
また、この第1実施例では、前記化粧面部11の前端及び後端が折り下げられているので、化粧面部11の曲げ強度が高いものとなり、形状安定性も高いものとなった。さらに、前記落下防止板1には、嵌合部14,15の下端に下方へ延在する固定部14b,15bを設けてビス1bにて固定したので、嵌合部14,15の固定がより強固に且つ確実なものとなった。
In the state of FIG. 2 showing the state in which the fall prevention plate 1 is attached, the fall prevention plate is provided between the lower flange 42 of the shaped steel 4 and the lateral piece 22 of the auxiliary member 2 which are butted at a distance. 1 is arranged to resist elasticity, and the fitting portion 14 located on the left side is attached to the lower flange 42 (upward lip 421) of the steel mold 4 and the fitting portion 15 located on the right side is attached to the lower portion. The auxiliary piece 2 is elastically fitted to the lateral piece 22 (upward piece 221).
In this way, the fall prevention plate 1 can be easily and reliably fixed to the shape steel 4 and the auxiliary material 2 by a simple operation of pushing it up toward the ceiling. Moreover, in the first embodiment, the fall prevention plate 1 is formed symmetrically as described above. Therefore, the fall prevention plate 1 can be easily designed and molded, and an error in the mounting direction does not occur during the mounting work.
Further, in the first embodiment, since the front end and the rear end of the decorative surface portion 11 are folded down, the bending strength of the decorative surface portion 11 is high and the shape stability is also high. Further, since the fall prevention plate 1 is provided with the fixing portions 14b and 15b extending downward at the lower ends of the fitting portions 14 and 15 and fixed by the screws 1b, the fitting portions 14 and 15 can be fixed more securely. It became solid and reliable.

次に、前述のように図3に基づいて、第2の工程について説明する。
図3は、前述のように屋根材5と固定具7とを分離する第2の工程の途中の状態を示し、屋根からの固定具7の延出部分をハンマー等を用いてハッチング矢印で示すように鉛直方向に押し込むことにより、屋根材5と固定具7とを分離する。なお、図中に点線にて示すように、固定具7の延出部分(=フックボルト7の上端とナット7b)を切除した後、鉛直方向に押し込むようにしてもよい。
Next, the second step will be described based on FIG. 3 as described above.
FIG. 3 shows a state in the middle of the second step of separating the roofing material 5 and the fixture 7 as described above, and shows the extending portion of the fixture 7 from the roof with a hatching arrow using a hammer or the like. The roof member 5 and the fixture 7 are separated by pushing in the vertical direction. In addition, as shown by a dotted line in the drawing, the extending portion of the fixture 7 (=the upper end of the hook bolt 7 and the nut 7b) may be cut off and then pushed in the vertical direction.

この図3に示すように鉛直方向の下方へ押し込まれた固定具7は、上端が強制的に没入されると共に、下端が型鋼4の上フランジ43の下向きリップ431に係合していた状態から解除され、図中に点線で示すように全体的に下方へ移動する。
下方へ移動する固定具7の下端は、前記落下防止板1の化粧面部11や押し込み片部12,13に受支され、型鋼4の下フランジ42へと導かれる。
このように前記落下防止板1に受支された固定具4は、最終的には、型鋼4の下フランジ42上に受け止められる状態となるため、室内側への落下が生ずることがない。
As shown in FIG. 3, in the fixture 7 pushed downward in the vertical direction, the upper end is forcibly retracted, and the lower end is engaged with the downward lip 431 of the upper flange 43 of the shape steel 4. It is released and moves downward as shown by the dotted line in the figure.
The lower end of the fixture 7 that moves downward is supported by the decorative surface portion 11 and the pushing piece portions 12 and 13 of the fall prevention plate 1 and guided to the lower flange 42 of the shaped steel 4.
In this way, the fixture 4 supported by the fall prevention plate 1 is finally received on the lower flange 42 of the mold steel 4, so that the fixture 4 does not drop inside.

さらに、前述のように図4に基づいて、第3の工程について説明する。
図4は、前記第2の工程にて分離した屋根材5を撤去すると共にその裏面側の木毛セメント板6をも撤去し、併せて固定具7も取り除いた後にその後に前述のように点線にて示す新設屋根8を敷設している。
この新設屋根8としてはどのような屋根を敷設してもよく、特に限定されるものではなく、例えば新たな屋根材5及び新たな木毛セメント板6、新たな固定具7を用いて図2に示す既存屋根と全く同様に新設屋根8を構築してもよい。その際、例えば木毛セメント板6が老化していない場合にはそのまま新設屋根8に流用してもよい。
Further, as described above, the third step will be described based on FIG.
FIG. 4 shows that the roof material 5 separated in the second step is removed, the wood wool cement plate 6 on the back side thereof is also removed, and the fixture 7 is also removed. The new roof 8 shown in is laid.
Any roof may be laid as the new roof 8 and is not particularly limited. For example, a new roof material 5, a new wood wool cement plate 6, and a new fixture 7 are used. The new roof 8 may be constructed just like the existing roof shown in FIG. At that time, for example, when the wood wool cement plate 6 is not aged, it may be diverted to the new roof 8 as it is.

このような第1〜第3の工程からなる本発明の既存屋根の改修方法は、それぞれの工程を容易に行うことができ、特に配設した落下防止板1により、屋根撤去時の部材落下を防ぐことができ、屋内側の使用制限を最小限にすると共に、撤去した部材の回収を容易に行うことができる。さらに、この第1実施例では、落下防止板1が天井化粧材を兼ねるので、新設屋根8の種類にかかわらずに裏面側(室内側)の意匠性を高めることができる。 The existing roof refurbishing method of the present invention comprising such first to third steps can easily perform each step, and in particular, the fall prevention plate 1 arranged prevents the members from dropping during roof removal. Therefore, it is possible to prevent the use, minimize the use limit on the indoor side, and easily collect the removed members. Further, in the first embodiment, since the fall prevention plate 1 also serves as the ceiling decorative material, it is possible to enhance the design of the rear surface (inside the room) regardless of the type of the new roof 8.

本発明の第1の工程については、図5〜9に示す第2〜第6実施例のように行ってもよい。 About the 1st process of this invention, you may carry out like 2nd-6th Example shown in FIGS.

図5に示す第2実施例は、型鋼4,4間の配設間隔が広くなっているため、落下防止板1Eの化粧面部11eが前記第1実施例よりも長く形成され、その前端及び後端には前記折り下げ片(111)に代えて折り上げ片111eが設けられ、その左右端に形成される押し込み片部12e,13eも前記第1実施例よりも長く形成されている。
また、嵌合部14,15には、それぞれ側方から上方へ向くL字状片16,17が延設され、ビス1bを嵌合部14,15の縦片部(固定部14b,15b)に打ち込んでもその頭部をこのL字状片16,17が隠すことができる。
In the second embodiment shown in FIG. 5, since the disposition interval between the shape steels 4 and 4 is wide, the decorative surface portion 11e of the fall prevention plate 1E is formed longer than that in the first embodiment, and its front end and rear end. A folding up piece 111e is provided at the end instead of the folding down piece (111), and push-in piece portions 12e and 13e formed at the left and right ends thereof are also formed longer than in the first embodiment.
L-shaped pieces 16 and 17 extending upward from the sides are respectively provided on the fitting portions 14 and 15, and the screws 1b are provided on the vertical piece portions of the fitting portions 14 and 15 (fixing portions 14b and 15b). The head can be hidden by the L-shaped pieces 16 and 17 even when it is driven into.

さらに、この第2実施例における第1の工程に用いる補助材2Eは、前記中央縦片部21、前記横片部22を備える点では前記第1実施例と同様であるが、上下対称の部材であって、中央縦片部21の上端にも横片部22及び上向き片221に相当する上側横片部23及び下向き片231を有する構成である。 Further, the auxiliary member 2E used in the first step in the second embodiment is similar to the first embodiment in that it includes the central vertical piece portion 21 and the horizontal piece portion 22, but a vertically symmetrical member. In addition, the central vertical piece portion 21 also has an upper horizontal piece portion 23 and a downward piece 231 corresponding to the horizontal piece portion 22 and the upward piece 221 at the upper end.

図6に示す第3実施例における第1の工程では、落下防止板1Bの化粧面部11bが前記第2実施例よりも短く形成され、前記第2実施例より押し込み片部12b,13bの傾斜角度が大きく配設される。
また、この第3実施例では、前記第2実施例におけるL字状片16,17に代えて外向き片16b,17bが設けられている。
In the first step of the third embodiment shown in FIG. 6, the decorative surface portion 11b of the fall prevention plate 1B is formed shorter than that in the second embodiment, and the inclination angles of the pushing pieces 12b and 13b are greater than those in the second embodiment. Are arranged large.
Further, in the third embodiment, outwardly facing pieces 16b and 17b are provided instead of the L-shaped pieces 16 and 17 in the second embodiment.

図7に示す第4実施例における第1の工程では、前記第1〜3実施例における押し込み片部(12等,13等)が傾斜状に折り曲げた形状、即ち一つの傾斜面からなるのに対し、この第4実施例における押し込み片部12c,13cはそれぞれ三つの傾斜面から構成されるものである。
また、この第4実施例では、前記第2実施例におけるL字状片16,17に代えて外向き片16c,17cが設けられている。
In the first step in the fourth embodiment shown in FIG. 7, although the pushing piece portions (12, 13, etc.) in the first to third embodiments are bent in an inclined shape, that is, one inclined surface is formed. On the other hand, the pressing pieces 12c and 13c in the fourth embodiment are each composed of three inclined surfaces.
Further, in the fourth embodiment, outwardly facing pieces 16c and 17c are provided instead of the L-shaped pieces 16 and 17 in the second embodiment.

図8に示す第5実施例における第1の工程では、前記第4実施例と同様に押し込み片部12d,13dがそれぞれ三つの傾斜面から構成されるものである。
また、この第4実施例では、前記第2実施例におけるL字状片16,17に代えて外向き片16d,17dが設けられている。
In the first step of the fifth embodiment shown in FIG. 8, the pressing pieces 12d and 13d are each composed of three inclined surfaces, as in the fourth embodiment.
Further, in the fourth embodiment, outwardly facing pieces 16d and 17d are provided instead of the L-shaped pieces 16 and 17 in the second embodiment.

図9(a)に示す第6実施例における第1の工程では、前記第2実施例における落下防止板1E及び補助材2Eを室内側から被覆する化粧カバー9を配した例を示している。また、この第6実施例では、固定具7'であるフックボルトは、型鋼4のウエブ41の背面側に沿い、下フランジ42の上向きリップ421に係合状に取り付けられている。 The first step in the sixth embodiment shown in FIG. 9A shows an example in which a decorative cover 9 for covering the fall prevention plate 1E and the auxiliary material 2E in the second embodiment from the indoor side is arranged. Further, in the sixth embodiment, the hook bolt serving as the fixture 7'is attached to the upward lip 421 of the lower flange 42 along the rear side of the web 41 of the shaped steel 4 so as to be engaged therewith.

この第6実施例に用いられる化粧カバー9は、図9(b)に示すように型鋼4の下フランジ42及び補助材2Eの横片部22を下方側から被覆する化粧面91を有するものであって、型鋼4の長さ方向に連続する長尺状に形成されている。
また、この化粧カバー9は、図示するように樋状に形成され、底面に相当する化粧面91の左右端を立ち上げて側面92,92とし、該側面92,92の上端をそれぞれ内側へ折曲して取付嵌合部93,93とした構成である。
As shown in FIG. 9B, the decorative cover 9 used in the sixth embodiment has a decorative surface 91 that covers the lower flange 42 of the shaped steel 4 and the lateral piece 22 of the auxiliary member 2E from below. Therefore, the shape steel 4 is formed in an elongated shape continuous in the length direction.
The decorative cover 9 is formed in a gutter shape as shown in the drawing, and the left and right ends of the decorative surface 91 corresponding to the bottom surface are raised to form side surfaces 92, 92, and the upper ends of the side surfaces 92, 92 are respectively folded inward. This is a configuration in which the mounting fitting portions 93, 93 are bent.

なお、前記第2実施例にて取り付けた落下防止板1Eには、前述のように嵌合部14,15にL字状片16,17が延設されているので、下方から天井方向へ押し上げるという簡易な操作にて化粧カバー9を前記L字状片16,17に弾性的に嵌合させて取り付けることができる(L字状片16,17の上端に取付嵌合部93,93が係合する)。即ち前記L字状片16,17は、取付嵌合受部として機能する。
そのため、この第6実施例では、化粧カバー9と前記落下防止板1Eとが相まって天井全体の美観向上が果たされる。
The fall prevention plate 1E attached in the second embodiment has the L-shaped pieces 16 and 17 extending from the fitting portions 14 and 15 as described above, and therefore is pushed up from below toward the ceiling. The decorative cover 9 can be elastically fitted and attached to the L-shaped pieces 16 and 17 by such a simple operation (the attachment fitting portions 93 and 93 are engaged with the upper ends of the L-shaped pieces 16 and 17). Match). That is, the L-shaped pieces 16 and 17 function as mounting fitting receiving portions.
Therefore, in the sixth embodiment, the decorative cover 9 and the fall prevention plate 1E are combined to improve the appearance of the entire ceiling.

また、本発明の第2の工程については、前記図3に限らず、図10に示す第7実施例のように行ってもよい。
なお、図10に示す第7実施例では、落下防止板1や補助材2については、前記第1実施例と全く同様であり、化粧カバー9については、前記第6実施例と全く同様であるから、それぞれの構成、部位に同一符号を付記して説明を省略する。
Further, the second step of the present invention is not limited to the above-mentioned FIG. 3 and may be performed as in the seventh embodiment shown in FIG.
In the seventh embodiment shown in FIG. 10, the fall prevention plate 1 and the auxiliary member 2 are exactly the same as those in the first embodiment, and the decorative cover 9 is exactly the same as in the sixth embodiment. Therefore, the same reference numerals are given to the respective configurations and parts, and the description thereof will be omitted.

この第7実施例では、前記第6実施例と同様に固定具7'であるフックボルトが、型鋼4のウエブ41の背面側に沿い、下フランジ42の上向きリップ421に係合状に取り付けられ、更にビス固定されている。
そのため、この第7実施例における第2の工程では、固定具7'の延出部分(=フックボルト7'の上端とナット7b)を切除する方法を採用した。この固定具7'を下方から抜き出して取り出せるのであれば、そのようにしてもよいが、多くの場合には、延出部分を切除した固定具7'を前後方向に倒す方法が採られることが多い。
In the seventh embodiment, similarly to the sixth embodiment, the hook bolt, which is the fixture 7', is attached to the upward lip 421 of the lower flange 42 along the rear side of the web 41 of the shaped steel 4 so as to be engaged therewith. Also, the screw is fixed.
Therefore, in the second step of the seventh embodiment, a method of cutting off the extending portion of the fixture 7'(=the upper end of the hook bolt 7'and the nut 7b) is adopted. If this fixing tool 7'can be pulled out from the lower part and taken out, this may be done, but in many cases, a method of tilting the fixing tool 7'with the extended portion cut out in the front-back direction may be adopted. Many.

1 天井仕上げ材
11 化粧面部
12,13 押し込み片部
14,15 嵌合部
2 補助材
21 中央縦片部
22 横片部
221 上向き片
4 型鋼
41 ウエブ
42 下フランジ
421 上向きリップ
7 固定具
7b ナット
8 既存屋根
9 化粧カバー
91 化粧面
DESCRIPTION OF SYMBOLS 1 Ceiling finishing material 11 Decorative surface part 12, 13 Pushing piece part 14, 15 Fitting part 2 Auxiliary material 21 Central vertical piece part 22 Horizontal piece part 221 Upward piece 4 Type steel 41 Web 42 Lower flange 421 Upward lip 7 Fixing tool 7b Nut 8 Existing roof 9 Makeup cover 91 Makeup surface

Claims (3)

屋根材表面から鉛直方向に固定具を取り付けて複数の型鋼にて形成される鉄骨躯体に屋根材を敷設してなる既存屋根の改修方法であって、
隣り合う型鋼間に、下面側が化粧面となる化粧面部の型鋼側の端縁から下方へ傾斜状に延在する傾斜面部を有し、落下物の室内側への落下を防止する落下防止板を配設する第1の工程と、
既存屋根における前記屋根材と前記固定具とを分離すると共に該分離部分を前記傾斜面部上に導く第2の工程と、
前記第2の工程にて分離した屋根材を撤去して新設屋根を敷設する第3の工程と、
からなることを特徴とする鉄骨躯体に敷設された既存屋根の改修方法
A method for rehabilitating an existing roof, in which a fixture is attached vertically from the roof material surface and the roof material is laid on a steel frame body formed of a plurality of shaped steels,
Between adjacent mold steels, there is a fall prevention plate that has an inclined surface portion that extends downward from the edge of the decorative surface portion of the decorative surface portion whose lower surface side is the decorative surface downwardly, and prevents falling objects from falling inside the room. A first step of disposing,
A second step of separating the roof material and the fixture in the existing roof and guiding the separated portion onto the inclined surface portion;
A third step of laying a new roof by removing the roofing material separated in the second step,
Method of repairing an existing roof laid on a steel skeleton characterized by being made of
第2の工程は、屋根からの固定具の延出部分を切除するか、屋根からの固定具の延出部分を鉛直方向に押し込むかの何れか一方であることを特徴とする請求項1に記載の鉄骨躯体に敷設された既存屋根の改修方法。 The second step is to either cut off the extending portion of the fixture from the roof or push the extending portion of the fixture from the roof in the vertical direction. A method for repairing an existing roof laid on the steel frame structure described. 落下防止板は、天井化粧材であることを特徴とする請求項1又は2に記載の鉄骨躯体に敷設された既存屋根の改修方法。 The method for repairing an existing roof laid on a steel frame body according to claim 1 or 2, wherein the fall prevention plate is a decorative material for the ceiling.
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