JP4421738B2 - Drainage structure at the edge of flat field in buildings - Google Patents
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【０００１】
【発明の属する技術分野】
本発明は、例えば、シート防水施工された屋上やベランダ等における平場及び立上り壁間に好適に採用される建築物における平場端縁の排水溝構造に関する。
【０００２】
【従来の技術】
図４に示すように、シート防水施工されるビル屋上は、コンクリート躯体からなる平場（３０）と、平場（３０）の外周端縁に沿って立上り状に設けられ、コンクリート躯体からなるパラペット等の立上り壁（３１）とを有しており、平場（３０）と立上り壁（３１）との間に沿って、排水溝（１０）が設けられる。
【０００３】
図４及び図５に示すように、このような排水溝（１０）を形成するための排水溝部材（１）は、通常、長手方向に沿って設けられた上向きコ字型の溝部（１１）と、その溝部（１１）の一側壁（１２ａ）の上端に、平場（３０）の一端縁に対応して一体に形成された水平フランジ（１３ａ）と、溝部（１１）の他側壁（１２ｂ）の上端に、立上り壁（３１）の下端縁に対応して一体に形成された垂直フランジ（１３ｂ）とを有している。この排水溝部材（１）は、防水シート固定用の部材としての機能を果たすものもあり、例えば、鋼板等の金属製芯層の表裏両面に塩化ビニル樹脂等の合成樹脂を積層された塩ビ鋼板等の長尺な樹脂被覆鋼板により構成される。
【０００４】
そして、この排水溝部材（１）を用いて排水溝（１０）を形成する場合、まず、平場（３０）と立上り壁（３１）との間に設けられた躯体溝（３２）に一の排水溝部材（１）の溝部（１１）を収容するとともに、その垂直フランジ（１３ｂ）を立上り壁（３１）の下端縁に沿わせて、水平フランジ（１３ａ）を平場（３０）の一端縁に沿わせて配置し、その状態で図示しないタッピングビスや開脚釘等の固着具を用いて、排水溝部材（１０）の両フランジ（１３ａ）（１３ｂ）を平場（３０）及び立上り壁（３１）に固定する。
【０００５】
次いで、同様にして、複数の排水溝部材（１）を縦列に配置して固定し、継ぎ目シート（２）を、隣接する排水溝部材（１）の対向端部間の隙間（ｓ）に沿ってその対向端部を覆うように配置し、その状態で排水溝部材（１）に熱融着や溶剤溶着により接合一体化する。こうして、縦列配置された複数の排水溝部材（１）の溝部（１１）により排水溝（１０）が形成される。
【０００６】
その後、平場（３０）の上面を覆うように防水シート（３３ａ）を配置し、その防水シート（３３ａ）の一端縁を排水溝部材（１）の水平フランジ（１３ａ）の表面層樹脂及び継ぎ目シート（２）に、熱融着又は、溶剤溶着により接合一体化して固定する。一方において、立上り壁（３１）の壁面を覆うように防水シート（３３ｂ）を配置し、その防水シート（３３ｂ）の下方端縁を排水溝部材（１）の垂直フランジ（１３ｂ）の表面層樹脂及び継ぎ目シート（２）に前記同様に固定する。こうして、排水溝周辺がシート防水施工されて、従来の排水溝構造が形成される。
【０００７】
【発明が解決しようとする課題】
しかしながら、図６に示すように、上記従来の排水溝構造は、排水溝部材（１）の対向端部間の隙間（ｓ）に沿ってその対向端部を覆うように継ぎ目シート（２）を配置しているため、継ぎ目シート（２）の厚み分だけ前記溝底部と継ぎ目シート（２）との間に段差を生じ、この段差により排水溝（１０）を流れる水が堰き止められて継ぎ目シート（２）の勾配上方向側に水溜まり（５０）が形成される。このように、水溜まり（５０）が形成されると、美観を低下させることとなる。また、水溜まり（５０）の水が引いた後でも、雨水に混入した泥や埃が残存して排水溝（１０）の溝底部に付着し、一段と美観を低下させるという問題を有する。
【０００８】
本発明は、上記従来技術の問題を解消し、建造物における平場端縁の防水性を維持しつつ、良好な排水性を得ることができて、水溜まりが形成されるのを防止することができる排水溝構造を提供することを目的とする。
【０００９】
【課題を解決するための手段】
本発明は、上記の目的において、長手方向に沿って溝部を有する複数の長尺な排水溝部材が、建造物における平場の一端縁に沿って縦列に設けられて、前記複数の排水溝部材の溝部により排水溝が形成される一方、隣接する排水溝部材の対向端部に、その対向端部を覆うように防水性の継ぎ目シートが敷設される建造物における平場端縁の排水溝構造において、前記排水溝の溝底部に、隣接する排水溝部材の対向端部間をまたがるように凹陥部が形成され、前記継ぎ目シートが長手方向において前記凹陥部内に配置されてなることを要旨とする。
【００１０】
この発明においては、溝底部に形成した凹陥部内に継ぎ目シートを配置するものであるため、溝底部に継ぎ目シートの厚さによる段差が形成されるのを防止することができる。このため、排水構内を水が堰き止められることなくスムーズに流通し、水溜まりの形成を防止することができる。
【００１１】
本発明は、シート防水施工されるビルの屋上やベランダ等における平場と立上り壁との間に好適に採用することができる。
【００１２】
即ち、本発明は、前記建造物は、前記平場の一端縁に沿って立上り状に設けられる立上り壁と、前記平場及び立上り壁間に沿って設けられる躯体溝とを有し、前記排水溝部材は、その溝部が上向きコ字状の溝型形状に形成され、その溝部の一側壁上端に前記平場の一端縁に対応して水平フランジが設けられるとともに、溝部の他側壁上端に前記立上り壁の下端縁に対応して垂直フランジが設けられ、前記排水溝部材は、その溝部を前記躯体溝に収容配置した状態で、水平フランジが前記平場の上面における一端縁に沿って固定されるとともに、垂直フランジが前記立上り壁の内壁面における下端縁に沿って固定され、前記平場の上面に敷設された平場用防水シートの一端縁が前記水平フランジに接合されるとともに、前記立ち上がり壁の内壁面に敷設された立上り壁用防水シートの下端縁が前記垂直フランジに接合されてなるものを好適に採用することができる。
【００１３】
ところで、排水溝部材の溝底部に、例えば、平面視において角を有する短形状等の外周形状とした凹陥部をプレス加工により形成すると、該角近傍において応力集中を生じ、破断する恐れがある。換言すれば、凹陥部を平面視において角のない外周形状とすることにより、破断を防止しつつ、プレス加工により凹陥部を容易に形成することができる。
【００１４】
即ち、本発明は、前記凹陥部が平面視において、円形、楕円形、長円形等の角のない外周形状を有することを好適に採用することができる。
【００１５】
【発明の実施の形態】
図１は、本発明の実施形態であるビル屋上の平場（３０）と立上り壁（３１）との間の排水溝構造を示す断面図、図２は、該排水溝構造における排水溝部材の連結部周辺の斜視図である。
【００１６】
両図に示すように、この排水溝構造には、本実施形態特有の排水溝部材（１）が採用される。この排水溝部材（１）は、上記従来と同様、所定の長さを有する樹脂被覆鋼板からなり、長手方向に沿う板状の溝底部（１２ｃ）の両端縁に沿って、立上り状に両側壁（１２ａ）（１２ｂ）が一体形成された溝型形状の溝部（１１）と、その溝部（１１）の一側壁（１２ａ）上端に前記平場（３０）の一端縁に対応して一体形成された水平フランジ（１３ａ）と、溝部（１１）の他側壁（１２ｂ）上端に前記立上り壁（３１）の下端縁に対応して一体形成された垂直フランジ（１３ｂ）とを有している。
【００１７】
また、この排水溝部材（１）における溝底部（１２ｃ）の両側端部には、平面視半長円形の凹陥部（３ａ）（３ａ）が形成されて、複数の排水溝部材（１）を縦列に配置する場合に、対応する凹陥部（３ａ）（３ａ）によって、隣り合う排水溝部材（１）の対向端部間をまたぐように平面視長円形の凹陥部（３）が形成される。
【００１８】
本実施形態において、凹陥部（３ａ）の形成方法は、特に限定するものではないが、加工容易なプレス加工により成形するのが好ましい。
【００１９】
更に、凹陥部（３）の平面視における形状は、特に限定するものでないが、プレス加工により凹陥部（３）を形成する場合には、円形、楕円形、長円形等の角のない外周形状を好適に採用することができる。即ち、平面視において角を有する外周形状とした凹陥部（３）をプレス加工により成形する場合に、該角近傍において破断を生じる恐れがある。
【００２０】
また、凹陥部（３）は、排水溝部材（１）の長手方向において、少なくとも継ぎ目シート（２）の幅を超えるものでなければならない。即ち、凹陥部（３）が継ぎ目シート（２）の幅に満たないものである場合には、凹陥部（３）内に継ぎ目シート（２）を配置できず、溝底部（１２ｃ）に継ぎ目シート（２）の厚みによる段差が形成されて、水溜まりの形成を防止することができない。
【００２１】
更に、凹陥部（３）の深さは、継ぎ目シート（２）の厚さに対応して設定するのが好ましい。即ち、凹陥部（３）を継ぎ目シート（２）の厚さに対応して設定することにより、凹陥部（３）内に配置される継ぎ目シート（２）と溝底部（１２ｃ）との間に段差が形成されるのを確実に防止することができる。なお、言うまでもなく、凹陥部（３）が深すぎると、凹陥部（３）の勾配下方向側において、凹陥部（３）と溝底部（１２ｃ）との間に段差が形成されて水溜まりが形成される恐れがある。
【００２２】
そして、本実施形態の排水溝構造を形成する場合、従来の排水溝構造と同様に施工する。
【００２３】
まず、平場（３０）と立上り壁（３１）との間の躯体溝（３２）に一の排水溝部材（１）の溝部（１１）を収容配置するとともに、その垂直フランジ（１３ｂ）を立上り壁（３１）の内壁面の下端縁に沿わせて、水平フランジ（１３ａ）を平場（３０）の上面における一端縁に沿わせて配置し、その状態でタッピングビスや開脚釘等の固着具（３４）（３５）を用いて、排水溝部材（１）のフランジ（１３ａ）（１３ｂ）を平場（３０）及び立上り壁（３１）に固定する。
【００２４】
次いで、他の排水溝部材（１）を、前記一の排水溝部材（１）と一定の隙間（ｓ）を設けるように配置し、前記と同様に平場（３０）及び立上り壁（３１）に固定する。なお、隣り合う排水溝部材（１）の間には、通常、排水溝部材（１）の熱膨張等を考慮して、一定の隙間（ｓ）を設けるようにしている。
【００２５】
同様にして複数の排水溝部材（１）を縦列に配置して固定し、継ぎ目シート（２）を、隣接する排水溝部材（１）の対向端部間の隙間（ｓ）に沿ってその対向端部を覆うように配置し、その状態で、熱融着、溶剤溶着により接合一体化する。このとき、継ぎ目シート（２）は、上記したように、排水溝部材（１）の長手方向において、凹陥部（３）内に配置されている必要がある。
【００２６】
ここで、継ぎ目シート（２）としては、防水シート（３３ａ）（３３ｂ）と同じ材質のもの、例えば、ポリ塩化ビニル系樹脂、ポリオレフィン系樹脂等の合成樹脂からなるものが好適に採用される。
【００２７】
継ぎ目シート（２）を取り付けた後は、図１に示すように、平場（３０）の上面を覆うように平場用防水シート（３３ａ）を配置し、その防水シート（３３ａ）の一端縁を排水溝部材（１）の水平フランジ（１３ａ）の表面層樹脂及び継ぎ目シート（２）に、熱融着又は溶剤溶着により接合一体化して固定する。一方において、立上り壁（３１）の壁面を覆うように立上り壁用防水シート（３３ｂ）を配置し、その防水シート（３３ｂ）の下端縁を排水溝部材（１）の垂直フランジ（１３ｂ）の表面層樹脂及び継ぎ目シート（２）に、前記同様に固定する。こうして本実施形態の排水溝構造が形成される。
【００２８】
本実施形態の排水溝構造においては、図３に示すように、排水溝（１０）の溝底部（１２ｃ）に、隣接する排水溝部材（１）の対向端部間をまたがるように凹陥部（３）が形成され、継ぎ目シート（２）が排水溝部材（１）の長手方向において凹陥部（３）内に配置されているため、継ぎ目シート（２）の厚み分の高さによる溝底部（１２ｃ）と継ぎ目シート（２）との間に段差が形成されず、溝底部（１２ｃ）上面が平滑面に形成される。このため、排水溝（１０）を流れる水は、スムーズに所定の排水口に導かれる。従って、排水溝（１０）の溝底部（１２ｃ）に水溜まりが形成されることなく、良好な美観を得ることができる。
【００２９】
また、本実施形態の排水溝部材（１）では、水溜まりが形成されないことから、水に混入する泥や埃は、水とともに排水溝（１０）を流動して除去される。従って、排水溝底部（１２ｃ）において泥や埃が残存して付着することがなく、良好な美観を維持することができる。
【００３０】
更に、本実施形態の排水溝部材（１）では、絞り加工等のプレス加工によって形成しているため、凹陥部（３）と溝底部（１２ｃ）との間に継ぎ目がなく、防水性に優れている。
【００３１】
【発明の効果】
以上のように、この発明の建造物における平場端縁の排水溝構造によれば、排水溝の溝底部に、隣接する排水溝部材の対向端部間をまたがるように凹陥部が形成され、継ぎ目シートが排水溝部材の長手方向において凹陥部内に配置されているため、前記継ぎ目シートの厚み分の高さによる溝底部と継ぎ目シートとの間の段差が形成されない。このため、良好な排水性を得ることができ、排水溝の溝底部に水溜まりが形成されることなく、良好な美観を得ることができるばかりでなく、排水溝底部において泥や埃が残存して付着することがなく、より一層良好な美観を得ることができるという効果がある。
【００３２】
また、本発明を建造物における平場の一端縁と立ち上がり壁との間に採用する場合、上記の効果をより確実に得ることができるという利点がある。
【００３３】
また、本発明において、凹陥部を平面視において円形、楕円形、長円形等の角のない外周形状とする場合、前記凹陥部を破断を防止しつつ、プレス加工により容易に形成することができ、より簡単に排水溝部材を製造することができるという利点がある。
【図面の簡単な説明】
【図１】この発明の実施形態である建造物における平場端縁の排水溝構造を示す縦断面図である。
【図２】上記排水溝構造における排水溝部材の連結部周辺を示す斜視図である。
【図３】図１のIII−III線断面図である。
【図４】従来の建造物における平場端縁の排水溝構造を示す縦断面図である。
【図５】上記従来の排水溝構造における排水溝部材の連結部周辺を示す斜視図である。
【図６】図４のVI−VI線断面図である。
【符号の説明】
１・・・排水溝部材
２・・・継ぎ目シート
３・・・凹陥部
１０・・・排水溝
１１・・・溝部
１２ａ・・・側壁（一側壁）
１２ｂ・・・側壁（他側壁）
１２ｃ・・・溝底部
１３ａ・・・水平フランジ
１３ｂ・・・垂直フランジ
３０・・・平場
３１・・・立上り壁
３２・・・躯体溝
３３ａ・・・平場用防水シート
３３ｂ・・・立上り壁用防水シート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage groove structure at an edge of a flat field in a building that is preferably employed between a flat field and a rising wall on a roof or a veranda where a sheet is waterproofed.
[0002]
[Prior art]
As shown in FIG. 4, the roof of the building to be waterproofed is provided with a flat ground (30) made of a concrete frame, and standing up along the outer peripheral edge of the flat field (30), such as a parapet made of a concrete frame. It has a rising wall (31), and a drainage groove (10) is provided between the flat ground (30) and the rising wall (31).
[0003]
As shown in FIGS. 4 and 5, the drainage groove member (1) for forming such a drainage groove (10) is usually an upward U-shaped groove (11) provided along the longitudinal direction. And a horizontal flange (13a) integrally formed at the upper end of one side wall (12a) of the groove (11) corresponding to one end edge of the flat field (30), and the other side wall (12b) of the groove (11). The vertical flange (13b) integrally formed corresponding to the lower end edge of the rising wall (31) is provided at the upper end of the vertical wall. This drain groove member (1) also has a function as a member for fixing a waterproof sheet. For example, a PVC steel sheet in which a synthetic resin such as a vinyl chloride resin is laminated on both front and back surfaces of a metal core layer such as a steel sheet. It is constituted by a long resin-coated steel plate such as.
[0004]
And when forming a drainage groove (10) using this drainage groove member (1), first, it is one drainage to the frame groove (32) provided between the flat place (30) and the rising wall (31). The groove portion (11) of the groove member (1) is accommodated, the vertical flange (13b) is set along the lower end edge of the rising wall (31), and the horizontal flange (13a) is set along one end edge of the flat field (30). In this state, the flanges (13a) and (13b) of the drainage groove member (10) are fixed to the flat surface (30) and the rising wall (31) by using a fixing tool such as a tapping screw or an open leg nail (not shown). Secure to.
[0005]
Next, in the same manner, a plurality of drainage groove members (1) are arranged and fixed in tandem, and the seam sheet (2) is aligned along the gap (s) between the opposite end portions of the adjacent drainage groove members (1). In this state, it is joined and integrated with the drain groove member (1) by heat fusion or solvent welding. Thus, the drainage groove (10) is formed by the groove portions (11) of the plurality of drainage groove members (1) arranged in tandem.
[0006]
Thereafter, a waterproof sheet (33a) is disposed so as to cover the upper surface of the flat field (30), and one end edge of the waterproof sheet (33a) is used as a surface layer resin and a seam sheet of the horizontal flange (13a) of the drainage groove member (1). In (2), they are joined and integrated by heat fusion or solvent welding and fixed. On the other hand, the waterproof sheet (33b) is disposed so as to cover the wall surface of the rising wall (31), and the lower edge of the waterproof sheet (33b) is used as the surface layer resin of the vertical flange (13b) of the drainage groove member (1). And it fixes to a seam sheet | seat (2) similarly to the above. Thus, the periphery of the drainage groove is waterproofed to form a conventional drainage groove structure.
[0007]
[Problems to be solved by the invention]
However, as shown in FIG. 6, the conventional drainage groove structure has a seam sheet (2) that covers the opposite ends along the gap (s) between the opposite ends of the drainage groove member (1). Therefore, a step is formed between the bottom of the groove and the seam sheet (2) by the thickness of the seam sheet (2), and the water flowing through the drainage groove (10) is blocked by this step, thereby the seam sheet. A water reservoir (50) is formed on the upper side of the gradient of (2). In this way, when the puddle (50) is formed, the aesthetics are lowered. Moreover, even after the water in the water reservoir (50) is drawn, there is a problem that mud and dust mixed in the rainwater remain and adhere to the bottom of the drainage groove (10), further reducing the appearance.
[0008]
The present invention solves the above-mentioned problems of the prior art, can maintain good waterproofness of the flat field edge in the building, can obtain good drainage, and can prevent the formation of a puddle. An object is to provide a drainage structure.
[0009]
[Means for Solving the Problems]
In the above object, the present invention provides a plurality of long drainage groove members having grooves along the longitudinal direction, arranged in tandem along one edge of a flat field in a building, and the plurality of drainage groove members In the drainage groove structure of the flat field edge in the building where a waterproof seam sheet is laid to cover the opposite end portion on the opposite end portion of the adjacent drainage groove member, while the drainage groove is formed by the groove portion, The gist of the present invention is that a recess is formed at the groove bottom of the drainage groove so as to straddle between the opposing ends of adjacent drainage groove members, and the seam sheet is disposed in the recess in the longitudinal direction.
[0010]
In the present invention, since the seam sheet is disposed in the recessed portion formed in the groove bottom, it is possible to prevent a step due to the thickness of the seam sheet from being formed in the groove bottom. For this reason, water can smoothly flow through the drainage premises without being blocked, and formation of a water pool can be prevented.
[0011]
INDUSTRIAL APPLICABILITY The present invention can be suitably employed between a flat field and a rising wall on a rooftop or a veranda of a building to be waterproofed.
[0012]
That is, in the present invention, the building has a rising wall provided in a rising shape along one edge of the flat field, and a housing groove provided between the flat field and the rising wall, and the drainage groove member The groove is formed in an upward U-shaped groove shape, and a horizontal flange is provided at one upper end of one side of the groove corresponding to one edge of the flat field, and the rising wall is formed at the upper end of the other side wall of the groove. A vertical flange is provided corresponding to the lower edge, and the drainage groove member is fixed along the one edge on the upper surface of the flat field while the groove portion is accommodated in the housing groove, and the vertical groove A flange is fixed along the lower end edge of the inner wall surface of the rising wall, and one end edge of the flat field tarpaulin laid on the upper surface of the flat field is joined to the horizontal flange, and the inner wall of the rising wall Can be suitably adopted as the lower end edge of the tarpaulin for the laid rising wall is joined to said vertical flanges on.
[0013]
By the way, for example, when a recessed portion having an outer peripheral shape such as a short shape having a corner in a plan view is formed in the groove bottom portion of the drainage groove member by press working, stress concentration may occur in the vicinity of the corner and there is a risk of breakage. In other words, by making the recessed portion an outer peripheral shape having no corners in plan view, the recessed portion can be easily formed by pressing while preventing breakage.
[0014]
That is, the present invention can suitably employ the concave portion having an outer peripheral shape without a corner such as a circle, an ellipse, or an oval in plan view.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a cross-sectional view showing a drainage groove structure between a flat floor (30) on a building roof and a rising wall (31) according to an embodiment of the present invention, and FIG. 2 is a connection of drainage groove members in the drainage groove structure. FIG.
[0016]
As shown in both figures, a drainage groove member (1) peculiar to the present embodiment is adopted for this drainage groove structure. The drainage groove member (1) is made of a resin-coated steel plate having a predetermined length, as in the conventional case, and rises along both side edges of the plate-like groove bottom (12c) along the longitudinal direction. (12a) and (12b) are integrally formed with a groove-shaped groove portion (11) and an upper end of one side wall (12a) of the groove portion (11) corresponding to one end edge of the flat field (30). It has a horizontal flange (13a) and a vertical flange (13b) integrally formed at the upper end of the other side wall (12b) of the groove (11) corresponding to the lower end edge of the rising wall (31).
[0017]
In addition, recessed portions (3a) and (3a) having a semi-oval shape in plan view are formed on both side ends of the groove bottom portion (12c) in the drain groove member (1), and a plurality of drain groove members (1) are provided. When arranged in tandem, the corresponding recesses (3a) and (3a) form recesses (3) having an oval shape in plan view so as to straddle the opposing end portions of the adjacent drainage groove members (1). .
[0018]
In the present embodiment, the method for forming the recessed portion (3a) is not particularly limited, but is preferably formed by press working that is easy to work.
[0019]
Further, the shape of the concave portion (3) in plan view is not particularly limited. However, when the concave portion (3) is formed by pressing, an outer peripheral shape having no corners such as a circle, an ellipse, and an oval. Can be suitably employed. That is, when the recessed portion (3) having an outer peripheral shape having a corner in a plan view is formed by press working, there is a risk of fracture near the corner.
[0020]
Moreover, the recessed part (3) must exceed the width | variety of a seam sheet | seat (2) at least in the longitudinal direction of a drain groove member (1). That is, when the recess (3) is less than the width of the seam sheet (2), the seam sheet (2) cannot be disposed in the recess (3), and the seam sheet is formed at the groove bottom (12c). A step due to the thickness of (2) is formed, and it is not possible to prevent the formation of a puddle.
[0021]
Furthermore, it is preferable to set the depth of the recessed portion (3) corresponding to the thickness of the seam sheet (2). That is, by setting the concave portion (3) corresponding to the thickness of the seam sheet (2), between the seam sheet (2) and the groove bottom portion (12c) disposed in the concave portion (3). It is possible to reliably prevent the step from being formed. Needless to say, if the recessed portion (3) is too deep, a step is formed between the recessed portion (3) and the groove bottom portion (12c) on the lower side of the gradient of the recessed portion (3) to form a puddle. There is a fear.
[0022]
And when forming the drainage groove structure of this embodiment, it constructs similarly to the conventional drainage groove structure.
[0023]
First, the groove portion (11) of one drainage groove member (1) is accommodated in the housing groove (32) between the flat ground (30) and the rising wall (31), and the vertical flange (13b) is placed on the rising wall. (31) A horizontal flange (13a) is arranged along one end edge on the upper surface of the flat field (30) along the lower end edge of the inner wall surface, and in that state, a fixing tool such as a tapping screw or a leg nail ( 34) (35) is used to fix the flange (13a) (13b) of the drainage groove member (1) to the flat field (30) and the rising wall (31).
[0024]
Next, another drainage groove member (1) is arranged so as to provide a certain gap (s) with the one drainage groove member (1), and in the same manner as described above, on the flat ground (30) and the rising wall (31). Fix it. Note that a certain gap (s) is usually provided between adjacent drain groove members (1) in consideration of thermal expansion of the drain groove members (1).
[0025]
Similarly, a plurality of drainage groove members (1) are arranged and fixed in a column, and the seam sheet (2) is opposed to the gap along the gap (s) between the opposite end portions of the adjacent drainage groove members (1). It arrange | positions so that an edge part may be covered, and it joins and integrates by heat sealing | fusion and solvent welding in that state. At this time, the seam sheet (2) needs to be disposed in the recessed portion (3) in the longitudinal direction of the drainage groove member (1) as described above.
[0026]
Here, as the seam sheet (2), a material made of the same material as the waterproof sheets (33a) and (33b), for example, a material made of a synthetic resin such as a polyvinyl chloride resin or a polyolefin resin is suitably employed.
[0027]
After attaching the seam sheet (2), as shown in FIG. 1, the flat sheet waterproof sheet (33a) is disposed so as to cover the upper surface of the flat sheet (30), and one end edge of the waterproof sheet (33a) is drained. The surface member of the horizontal flange (13a) of the groove member (1) and the joint sheet (2) are bonded and integrated by heat fusion or solvent welding and fixed. On the other hand, the rising wall waterproof sheet (33b) is disposed so as to cover the wall surface of the rising wall (31), and the lower end edge of the waterproof sheet (33b) is the surface of the vertical flange (13b) of the drain groove member (1). It fixes to a layer resin and a seam sheet | seat (2) similarly to the above. Thus, the drainage groove structure of this embodiment is formed.
[0028]
In the drainage groove structure of the present embodiment, as shown in FIG. 3, the groove bottom (12 c) of the drainage groove (10) has a recessed portion (straddle between the opposing end portions of the adjacent drainage groove member (1). 3) is formed, and the seam sheet (2) is disposed in the recessed portion (3) in the longitudinal direction of the drainage groove member (1), so that the groove bottom portion due to the height of the thickness of the seam sheet (2) ( 12c) is not formed between the seam sheet (2) and the upper surface of the groove bottom (12c) is formed as a smooth surface. For this reason, the water flowing through the drainage groove (10) is smoothly guided to a predetermined drainage port. Therefore, a good aesthetic appearance can be obtained without forming a puddle at the groove bottom (12c) of the drainage groove (10).
[0029]
Moreover, in the drainage groove member (1) of this embodiment, since a water reservoir is not formed, mud and dust mixed in water flow and are removed along with the water through the drainage groove (10). Therefore, mud and dust do not remain and adhere to the drain groove bottom (12c), and a good aesthetic appearance can be maintained.
[0030]
Furthermore, since the drainage groove member (1) of the present embodiment is formed by press working such as drawing, there is no seam between the recessed portion (3) and the groove bottom portion (12c), and the waterproofness is excellent. ing.
[0031]
【The invention's effect】
As described above, according to the drainage groove structure of the flat field edge in the building of the present invention, the concave portion is formed at the groove bottom portion of the drainage groove so as to straddle between the opposite end portions of the adjacent drainage groove members, and the seam Since the sheet is disposed in the recessed portion in the longitudinal direction of the drainage groove member, no step is formed between the groove bottom and the seam sheet due to the height of the thickness of the seam sheet. For this reason, it is possible to obtain a good drainage property, not to form a puddle at the bottom of the drainage groove, and to obtain a good aesthetic, but also mud and dust remain at the bottom of the drainage groove. There is an effect that a better aesthetic appearance can be obtained without adhesion.
[0032]
Moreover, when employ | adopting this invention between the one end edge of the flat field in a building, and a standing wall, there exists an advantage that said effect can be acquired more reliably.
[0033]
Further, in the present invention, when the concave portion has an outer peripheral shape without a corner such as a circle, an ellipse, or an oval in plan view, the concave portion can be easily formed by pressing while preventing breakage. There is an advantage that the drainage groove member can be manufactured more easily.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a drainage groove structure at an edge of a flat field in a building according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the periphery of a connecting portion of a drain groove member in the drain groove structure.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a longitudinal sectional view showing a drainage groove structure of a flat field edge in a conventional building.
FIG. 5 is a perspective view showing the periphery of a connecting portion of drainage groove members in the conventional drainage groove structure.
6 is a cross-sectional view taken along line VI-VI in FIG.
[Explanation of symbols]
DESCRIPTION OF
12b ... side wall (other side wall)
12c: groove
Claims (2)
前記排水溝の溝底部に、隣接する排水溝部材の対向端部間をまたがるように凹陥部が形成され、
前記凹陥部は、プレス加工により形成され、平面視において、円形、楕円形、長円形等の角のない外周形状を有し、
前記凹陥部の深さが、前記継ぎ目シートの厚さに対応して形成され、
前記継ぎ目シートが排水溝の長手方向において前記凹陥部内に配置されてなることを特徴とする建造物における平場端縁の排水溝構造。While a plurality of long drainage groove members having a groove portion along the longitudinal direction are provided in a column along one edge of a flat field in a building, the drainage grooves are formed by the groove portions of the plurality of drainage groove members. In the drainage groove structure of the flat field edge in the building where a waterproof seam sheet is laid so as to cover the opposite end portions between the opposite end portions of the adjacent drainage groove members,
A recess is formed at the groove bottom of the drainage groove so as to straddle between the opposing ends of adjacent drainage groove members,
The concave portion is formed by pressing, and has a peripheral shape without a corner such as a circle, an ellipse, or an oval in plan view,
The depth of the recess is formed corresponding to the thickness of the seam sheet,
A drainage groove structure of a flat field edge in a building, wherein the seam sheet is disposed in the recessed portion in the longitudinal direction of the drainage groove.
前記排水溝部材は、その溝部が上向きコ字状の溝型形状に形成され、その溝部の一側壁上端に前記平場の一端縁に対応して水平フランジが設けられるとともに、溝部の他側壁上端に前記立上り壁の下端縁に対応して垂直フランジが設けられ、
前記排水溝部材は、その溝部が前記躯体溝に収容配置された状態で、水平フランジが前記平場の上面における一端縁に沿って固定されるとともに、垂直フランジが前記立上り壁の内壁面における下端縁に沿って固定され、
前記平場の上面に敷設された平場用防水シートの一端縁が前記水平フランジに接合されるとともに、前記立ち上がり壁の内壁面に敷設された立上り壁用防水シートの下端縁が前記垂直フランジに接合されてなる請求項１記載の建築物における平場端縁の排水溝構造。The building has a rising wall provided in a rising shape along one edge of the flat field, and a housing groove provided between the flat field and the rising wall,
The drainage groove member is formed in an upward U-shaped groove shape, and a horizontal flange is provided on one side wall upper end of the groove portion corresponding to one edge of the flat field, and on the other side wall upper end of the groove portion. A vertical flange is provided corresponding to the lower edge of the rising wall,
The drainage groove member has a horizontal flange fixed along one end edge of the upper surface of the flat field with the groove portion accommodated in the housing groove, and a vertical flange is a lower end edge of the inner wall surface of the rising wall. Fixed along
One end edge of the flat sheet waterproof sheet laid on the upper surface of the flat field is bonded to the horizontal flange, and the lower end edge of the rising wall waterproof sheet laid on the inner wall surface of the rising wall is bonded to the vertical flange. The drainage groove structure of the flat field edge in the building of Claim 1 formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000150126A JP4421738B2 (en) | 2000-05-22 | 2000-05-22 | Drainage structure at the edge of flat field in buildings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000150126A JP4421738B2 (en) | 2000-05-22 | 2000-05-22 | Drainage structure at the edge of flat field in buildings |
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| JP4421738B2 true JP4421738B2 (en) | 2010-02-24 |
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| JP2014214561A (en) * | 2013-04-26 | 2014-11-17 | 住ベシート防水株式会社 | Drain ditch structure, roof floor, and veranda |
| JP7056839B2 (en) * | 2017-11-30 | 2022-04-19 | 住ベシート防水株式会社 | Waterproof structure |
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