JP4861837B2 - Rainwater drainage - Google Patents

Rainwater drainage Download PDF

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JP4861837B2
JP4861837B2 JP2007006022A JP2007006022A JP4861837B2 JP 4861837 B2 JP4861837 B2 JP 4861837B2 JP 2007006022 A JP2007006022 A JP 2007006022A JP 2007006022 A JP2007006022 A JP 2007006022A JP 4861837 B2 JP4861837 B2 JP 4861837B2
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waterproof layer
roof
rainwater
drain
rooftop
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JP2008169671A (en
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純平 野林
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第一機材株式会社
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Description

この発明は、コンクリート建屋の屋上部に設置される雨水排水装置に関する。   The present invention relates to a rainwater drainage device installed on the roof of a concrete building.

コンクリート建屋の屋上部には、雨水排水用のいわゆる横引きタイプのルールドレインが設置される。このルーフドレインは屋上部の床面とその周縁の起立壁面とが交わるコーナー部に据え付けられ、屋上部に降った雨水がそのルーフドレインを通して所定の排水部に排出される。このようなルーフドレインは、例えば特開2006−144377公報などに開示されており、断面ほぼL形状の受皿体と、この受皿体の背面に一体に形成された排水口部とを有し、受皿体から排水口部を通して雨水が排水される。
特開2006−144377公報
On the roof of the concrete building, a so-called horizontal pull type drain for draining rainwater is installed. The roof drain is installed at a corner where the roof surface of the roof and the standing wall surface at the periphery of the roof drain intersect, and rain water falling on the roof is discharged to a predetermined drainage through the roof drain. Such a roof drain is disclosed in, for example, Japanese Patent Application Laid-Open No. 2006-144377, and has a saucer body having a substantially L-shaped cross section, and a drain outlet integrally formed on the back surface of the saucer body. Rainwater is drained from the body through the drain.
JP 2006-144377 A

ところで、近年、コンクリート建屋の建設に当り、室内に対する採光性向上や居住スペースの有効活用を目的として、建屋の梁を住戸の外に出して向きを逆さにする逆梁工法が採用される場合がある。この場合、建屋の屋上部では逆さに向いた梁が屋上面に突出する。   By the way, in recent years, in the construction of concrete buildings, there is a case where the reverse beam construction method is adopted in which the beams of the building are put out of the dwelling unit and the direction is reversed for the purpose of improving the daylighting efficiency for the room and the effective use of the living space. is there. In this case, on the top of the building, a beam facing upside down protrudes from the top of the roof.

屋上部の床面の全体が平面状であれば、その屋上部に降った雨水は屋上部のコーナー部に設置されたルーフドレインを通して順次屋上部から排出される。しかしながら、逆梁工法の場合、屋上部に梁が突出し、このためその梁が堰となって雨水が屋上部のコーナー部のルーフドレインにまで流通することができなくなり、梁の内側に雨水が滞留してしまうという問題が生じる。   If the entire floor of the rooftop is flat, the rainwater that falls on the rooftop is sequentially discharged from the rooftop through the roof drain installed at the corner of the rooftop. However, in the case of the reverse beam method, the beam protrudes from the rooftop, so that it becomes a weir and rainwater cannot flow to the roof drain at the corner of the rooftop, and rainwater stays inside the beam. The problem of end up occurs.

このため、梁の下部に貫通孔を設け、その貫通孔を通して雨水をコーナー部のルーフドレインに導くことが考えられる。通常、屋上部には防水層が貼り付けられ、その防水層により屋上部のコンクリートスラブへの雨水の浸透を防止するようにしているが、梁の下部に単に貫通孔を設けるだけでは、屋上部の防水層とその貫通孔との境の部分から防水層の下側に雨水が浸透し、屋上部の防水性が不十分となってしまう。   For this reason, it is conceivable to provide a through hole in the lower part of the beam and guide rainwater to the roof drain at the corner through the through hole. Usually, a waterproof layer is affixed to the rooftop to prevent rainwater from penetrating into the concrete slab on the rooftop. Rainwater permeates from the boundary between the waterproof layer and the through hole to the lower side of the waterproof layer, resulting in insufficient waterproofing of the roof.

この発明はこのような点に着目してなされたもので、その目的とするところは、逆梁工法による梁が屋上部に突出する場合において、その梁の一方側から他方側へ雨水を良好に流通させることができると共に、その屋上部のコンクリートスラブへの雨水の浸透を確実に防止して屋上部の防水性を長期に渡って良好に保持することができる雨水排水装置を提供することにある。   The present invention has been made paying attention to such points, and the object of the present invention is to provide good rainwater from one side of the beam to the other when the beam by the reverse beam method protrudes from the roof. An object of the present invention is to provide a rainwater drainage device that can be circulated and that can reliably prevent rainwater from penetrating into the concrete slab on the rooftop and maintain the waterproofness of the rooftop well over a long period of time. .

この発明は、コンクリート建屋の屋上部に逆梁工法による梁が突出し、その梁の一方側から他方側への雨水の流通を可能にする雨水排水装置であって、前記梁の下部にその梁を貫通するように設けられる排水パイプと、この排水パイプの両端部に設けられるルーフドレインとを備え、前記各ルーフドレインは、前記屋上部の床面に沿って配置されるベース部と、前記梁の起立側面に沿って配置される直立部とを有する断面ほぼL形状の受皿体を備え、前記直立部に前記排水パイプの端部が結合されて排水パイプが受皿体の内側に通じ、前記屋上部の床面及び前記梁の起立側面にそれぞれ防水層が貼り付けられ、これら防水層の縁が前記ベース部の所定の領域の防水層受け部及び直立部の所定の領域の防水層受け部にそれぞれ重ね合わされ、この状態で前記受皿体の上に防水層押えが締結固定され、その締結力で前記各防水層が防水層押えを介して前記各防水層受け部に圧着されることを特徴としている。   The present invention is a rainwater drainage device in which a beam by a reverse beam method protrudes from the roof of a concrete building and allows the flow of rainwater from one side of the beam to the other side, and the beam is placed under the beam. A drainage pipe provided so as to pass through, and a roof drain provided at both ends of the drainage pipe, and each roof drain includes a base part disposed along a floor surface of the rooftop, and A receiving body having a substantially L-shaped cross section having an upright portion arranged along the standing side surface, and an end portion of the drainage pipe is coupled to the upright portion so that the drainage pipe leads to the inside of the receiving body, and the rooftop A waterproof layer is attached to each of the floor surface and the standing side surface of the beam, and the edges of the waterproof layer are respectively attached to a waterproof layer receiving portion in a predetermined region of the base portion and a waterproof layer receiving portion in a predetermined region of the upright portion. Superimposed, this Waterproof layer pressing on said pan member in the state is fastened, and wherein each said waterproof layer at the fastening force is crimped to the unit receiving the respective waterproof layer through a waterproof layer presser.

この発明の雨水排水装置によれば、逆梁工法による屋上部の梁の一方側から他方側へ雨水を良好に流通させることができると共に、その屋上部のコンクリートスラブへの雨水の浸透を確実に防止して屋上部の防水性を長期に渡って良好に保持することができる。   According to the rainwater drainage device of the present invention, it is possible to distribute rainwater well from one side of the beam on the rooftop by the reverse beam method to the other side, and to ensure the penetration of rainwater into the concrete slab on the rooftop. It can prevent and maintain the waterproofness of the rooftop well for a long time.

以下、この発明の実施の形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図1にはこの発明の第1の実施形態に係る雨水排水装置の断面図を示してある。この排水装置は逆梁工法で建設されたコンクリート建屋の屋上部1に据え付けられている。屋上部1の床面2には逆梁工法による梁3がその床面2から突出するように起立し、この梁3を境とする図の左側が屋上部1におけるコーナー部のルーフドレイン(図示せず)に通じる排水可能領域Aで、右側がその梁3で堰き止められた遮断領域Bである。   FIG. 1 is a sectional view of a rainwater drainage apparatus according to the first embodiment of the present invention. This drainage device is installed on the roof 1 of a concrete building constructed by the reverse beam method. On the floor surface 2 of the rooftop 1, a beam 3 by the reverse beam method stands up so as to protrude from the floor surface 2, and the left side of the figure with this beam 3 as a boundary is a roof drain (see FIG. It is a drainable area A that leads to (not shown), and the right side is a blocking area B that is blocked by the beam 3.

梁3の下部には、前記排水可能領域Aと遮断領域Bとを互いに連通させる鋼管製の排水パイプ5が埋め込まれている。この排水パイプ5には遮断領域Bから排水可能領域Aに向かって下方に傾斜する例えば2%程度の勾配がつけられている。そしてこの排水パイプ5の両端部にそれぞれ鋳物製のルーフドレイン6が取り付けられている。ルーフドレイン6の正面図を図2に示してある。   In the lower part of the beam 3, a steel pipe drain pipe 5 is embedded which allows the drainable area A and the blocking area B to communicate with each other. The drain pipe 5 is provided with a gradient of about 2%, for example, which inclines downward from the blocking area B toward the drainable area A. A cast roof drain 6 is attached to each end of the drain pipe 5. A front view of the roof drain 6 is shown in FIG.

これらルーフドレイン6は、受皿体9を有し、この受皿体9はベース部10と直立部11とからなる断面ほぼL形状をなし、その直立部11に排水口部12が一体に形成されている。この排水口部12は直立部11の背面側に突出する筒体13を一体に有し、この筒体13の内周部にねじが14が形成され、このねじ14が前記排水パイプ5の端部外周に形成されたねじ15にねじ込まれ、これにより排水パイプ5にルーフドレイン6の受皿体9が一体的に結合されている。   These roof drains 6 have a tray body 9, which has a substantially L-shaped cross section composed of a base portion 10 and an upright portion 11, and a drain port portion 12 is formed integrally with the upright portion 11. Yes. The drain port portion 12 integrally has a cylindrical body 13 protruding to the back side of the upright portion 11, and a screw 14 is formed on the inner peripheral portion of the cylindrical body 13, and the screw 14 is an end of the drain pipe 5. The tray 15 is screwed into a screw 15 formed on the outer periphery of the portion, and thereby the tray 9 of the roof drain 6 is integrally coupled to the drain pipe 5.

受皿体9におけるベース部10は、周縁側部分の一定の領域の防水層受け部17と、その内側の窪み部18とからなり、窪み部18が排水口部12の下側内周面に連なっている。直立部11は周縁側部分の一定の領域が防水層受け部20となっており、この防水層受け部20の内側の部分に排水口部12が形成されている。ベース部10における防水層受け部17と直立部11における防水層受け部20は互いに連続して連なり、その内側に防水層受け部17,20に沿って延びる位置決め用の突起21が一体に形成されている。   The base portion 10 in the tray 9 is composed of a waterproof layer receiving portion 17 in a certain region on the peripheral side portion and a recessed portion 18 inside thereof, and the recessed portion 18 is connected to the lower inner peripheral surface of the drain port portion 12. ing. The upright portion 11 has a waterproof layer receiving portion 20 in a certain region on the peripheral side portion, and a drain port portion 12 is formed in an inner portion of the waterproof layer receiving portion 20. The waterproof layer receiving portion 17 in the base portion 10 and the waterproof layer receiving portion 20 in the upright portion 11 are continuously connected to each other, and positioning protrusions 21 extending along the waterproof layer receiving portions 17 and 20 are integrally formed on the inside thereof. ing.

排水パイプ5及びその両端部のルーフドレイン6の受皿体9は、屋上部1の構築の際にその構築用型枠(図示せず)に支持され、その型枠内にコンクリートを打設することで屋上部1の梁3の下部に据え付けられる。この際、受皿体9は、防水層受け部17が屋上部1の床面2と面一となり、直立部11の防水層受け部20が梁3の起立側面と面一になるように施工される。   The drainage pipe 5 and the receiving body 9 of the roof drain 6 at both ends thereof are supported by a construction form (not shown) when constructing the rooftop 1, and concrete is placed in the formwork. It is installed in the lower part of the beam 3 on the roof 1. At this time, the tray 9 is constructed so that the waterproof layer receiving portion 17 is flush with the floor surface 2 of the rooftop 1 and the waterproof layer receiving portion 20 of the upright portion 11 is flush with the standing side surface of the beam 3. The

受皿体9の据え付け後には、屋上部1の床面2と梁3の起立側面とにそれぞれ例えばアスファルト防水による防水層23,24が貼り付けられる。床面2の上の防水層23の縁は受皿体9におけるベース部10の防水層受け部17の上に重ね合わされ、梁3の側面の防水層24の縁は直立部11の防水層受け部20の上に重ね合わされる。各防水層23,24の縁は突起21に突き合わされて位置決めされ、これにより各防水層23,24の縁が受皿体9の適正な領域に重ね合わされ、防水層23,24と受皿体9との間の水密性が確保される。特に、床面2の防水層23と受皿体9との間の水密性はより確実とすることが重要であり、このため防水層23と防水層受け部17との重なり代Lは100mm以上の幅に確保されている。   After installation of the tray 9, waterproof layers 23 and 24 made of, for example, asphalt waterproofing are attached to the floor surface 2 of the rooftop 1 and the standing side surface of the beam 3, respectively. The edge of the waterproof layer 23 on the floor 2 is superimposed on the waterproof layer receiving part 17 of the base part 10 in the tray 9, and the edge of the waterproof layer 24 on the side surface of the beam 3 is the waterproof layer receiving part of the upright part 11. 20 on top of each other. The edges of the waterproof layers 23 and 24 are abutted and positioned on the projections 21, whereby the edges of the waterproof layers 23 and 24 are superimposed on appropriate areas of the tray 9, and the waterproof layers 23 and 24 and the tray 9 Watertightness during the period is ensured. In particular, it is important to ensure the water tightness between the waterproof layer 23 on the floor 2 and the tray 9, and for this reason, the overlap margin L between the waterproof layer 23 and the waterproof layer receiving portion 17 is 100 mm or more. Secured to the width.

防水層23,24の施工後には、受皿体9の上にL形に屈曲する枠形状の防水層押え26が配置される。この防水層押え26はボルト27を介して受皿体9に締結され、その締結力で防水層23,24が防水層受け部17,20に圧着される。さらに防水層押え26の上には目皿状のストレーナ28が配置され、ねじ29を介して防水層押え26に締結される。   After the construction of the waterproof layers 23 and 24, a frame-shaped waterproof layer presser 26 that is bent into an L shape is disposed on the tray 9. The waterproof layer presser 26 is fastened to the tray 9 via bolts 27, and the waterproof layers 23 and 24 are pressed against the waterproof layer receiving portions 17 and 20 by the fastening force. Further, a strainer-shaped strainer 28 is disposed on the waterproof layer presser 26 and fastened to the waterproof layer presser 26 via a screw 29.

このような雨水排水装置によれば、梁3で遮断された遮断領域B内に降った雨水はその遮断領域B側の一方のルーフドレイン6を通して排水パイプ5内に順次流入すると共に、その排水パイプ5内を流通して他方のルールドレイン6から排水可能領域Aに流出し、その排水可能領域Aから屋上部1のコーナー部のルーフドレインを通して所定の排水部に排出され、したがって遮断領域Bに雨水が溜まって滞留するようなことがない。   According to such a rainwater drainage device, rainwater that falls in the blocking area B blocked by the beam 3 sequentially flows into the drainage pipe 5 through one roof drain 6 on the blocking area B side, and the drainage pipe. 5 flows out from the other rule drain 6 to the drainable area A, and is discharged from the drainable area A through the roof drain at the corner of the rooftop 1 to a predetermined drainage section. Will not accumulate and stay.

屋上部1の床面2及び梁3の側面に対する防水性は、各ルーフドレイン6の受皿体9と防水層23,24とが重なり合って圧着することで確実に保持され、したがって雨水が屋上部1のコンクリートスラブに浸透するようなことがなく、高い防水性を長期に渡って保持することができる。   The waterproofness to the floor surface 2 of the rooftop 1 and the side surfaces of the beams 3 is securely held by the tray body 9 and the waterproof layers 23 and 24 of each roof drain 6 being overlapped and pressure-bonded. It does not penetrate into concrete slabs and can maintain high waterproofness for a long time.

ところで、この第1の実施形態としての雨水排水装置においては、排水パイプ5の両端部にルーフドレイン6の受皿体9をねじ14,15の螺合によるねじ込みによりそれぞれ取り付けている。排水パイプ5は水平に対して僅かな勾配で傾斜しており、このため各受皿体9をねじ込みで取り付ける構造であると、その勾配に応じた角度だけルーフドレイン6が傾いてしまう。すなわち、受皿体6のベース部10が水平面に対して僅かに傾き、直立部11が垂直面に対して僅かに傾き、その傾きでベース部10及び直立部11と屋上部1の床面2及びを梁3の起立側面との間に僅かであるがずれが生じてしまう。また、鋳物製の受皿体6にあっては、防水層受け部17の内側に窪み部18があり、このためその窪み部18内に僅かであるが水が滞留してしまう。   By the way, in the rainwater drainage device as the first embodiment, the receiving body 9 of the roof drain 6 is attached to both ends of the drainage pipe 5 by screwing screws 14 and 15 respectively. The drain pipe 5 is inclined with a slight gradient with respect to the horizontal. Therefore, if the receiving tray body 9 is attached by screwing, the roof drain 6 is inclined by an angle corresponding to the gradient. That is, the base part 10 of the saucer 6 is slightly inclined with respect to the horizontal plane, and the upright part 11 is slightly inclined with respect to the vertical plane. With the inclination, the base part 10 and the upright part 11 and the floor surface 2 of the rooftop 1 and However, there is a slight deviation from the standing side surface of the beam 3. Further, in the cast tray 6, there is a recess 18 inside the waterproof layer receiving portion 17, and therefore water remains in the recess 18 slightly.

このような点を考慮したこの発明の第2の実施形態に係る雨水排水装置を図3及び図4に示してある。この第2の実施形態では梁3の下部にステンレス管からなる排水パイプ32が埋め込まれ、この排水パイプ32の両端部にステンレス板からなるルーフドレイン33が設けられている。各ルーフドレイン33は受皿体34を有し、これら受皿体34が排水パイプ32の両端部に溶接されている。受皿体34の正面図を図4に示してある。   A rainwater drainage apparatus according to a second embodiment of the present invention considering such points is shown in FIGS. In the second embodiment, drain pipes 32 made of stainless steel pipes are embedded under the beams 3, and roof drains 33 made of stainless steel plates are provided at both ends of the drain pipes 32. Each roof drain 33 has a receiving body 34, and these receiving bodies 34 are welded to both ends of the drainage pipe 32. A front view of the saucer 34 is shown in FIG.

各受皿体34はステンレス板によりベース部35と直立部36とを有するL形状に形成されている。ベース部35及び直立部36は共に平板状で、直立部36の下部に円形の排水口37が形成され、この排水口37の周縁に排水パイプ32の周縁が溶接されている。   Each tray 34 is formed in an L shape having a base portion 35 and an upright portion 36 by a stainless steel plate. The base portion 35 and the upright portion 36 are both flat, and a circular drainage port 37 is formed in the lower portion of the upright portion 36, and the periphery of the drainage pipe 32 is welded to the periphery of the drainage port 37.

排水パイプ32は、屋上部1の遮断領域Bから排水可能領域Aに向かって下方に例えば2%程度の勾配で傾斜するように梁3の下部に据え付けられているが、この排水パイプ32の両端の開口端面は、排水パイプ32の軸方向と直角ではなく、その勾配に応じた角度だけ傾いて垂直に起立する面となっており、この垂直な端面に受皿体34の直立部36が溶接により取り付けられている。したがって各受皿体34の直立部36は排水パイプ32の勾配に関わらず垂直に起立して拡がり、ベース部35は水平に延びて拡がる状態にある。そして、ベース部35の上面はその周縁から内側に向く一定の領域が防水層受け部38で、
直立部36の表面はその周縁から内側に向く一定の領域が防止層受け部39となっている。
The drainage pipe 32 is installed at the lower part of the beam 3 so as to incline with a gradient of, for example, about 2% from the blocking area B of the rooftop 1 toward the drainable area A. The opening end surface of the drainage pipe 32 is not perpendicular to the axial direction of the drainage pipe 32, but is a surface that is inclined vertically by an angle corresponding to the gradient thereof, and the upright portion 36 of the tray body 34 is welded to the vertical end surface by welding. It is attached. Therefore, the upright portion 36 of each tray 34 stands up and expands vertically regardless of the gradient of the drainage pipe 32, and the base portion 35 extends horizontally and expands. And the upper surface of the base part 35 is a waterproof layer receiving part 38 in a certain region facing inward from the periphery.
The surface of the upright portion 36 is a prevention layer receiving portion 39 in a certain region facing inward from the periphery.

排水パイプ32及びその両端部の受皿体34は、屋上部1を構築するための型枠の上に高さ調整可能な支持部材40を介して支持され、その型枠内にコンクリートを打設することで屋上部1の梁3の下部に据え付けられる。この際、受皿体34のベース部35が屋上部1の床面2と面一となり、直立部36が梁3の起立側面と面一になるように施工される。   The drainage pipe 32 and the receiving bodies 34 at both ends thereof are supported on a formwork for constructing the rooftop 1 via a support member 40 whose height is adjustable, and concrete is placed in the formwork. It is installed in the lower part of the beam 3 of the rooftop 1. At this time, it is constructed so that the base portion 35 of the tray body 34 is flush with the floor surface 2 of the rooftop 1 and the upright portion 36 is flush with the standing side surface of the beam 3.

受皿体34の据え付け後には、屋上部1の床面2と梁3の起立側面とにそれぞれ例えばアスファルト防水による防水層23,24が貼り付けられる。床面2の上の防水層23の縁は受皿体34におけるベース部35の防水層受け部38の上に重ね合わされ、梁3の側面の防水層24の縁は直立部36の防水層受け部39の上に重ね合わされる。   After installation of the saucer 34, waterproof layers 23 and 24 made of asphalt waterproof, for example, are attached to the floor surface 2 of the rooftop 1 and the standing side surface of the beam 3, respectively. The edge of the waterproof layer 23 on the floor 2 is overlaid on the waterproof layer receiving portion 38 of the base portion 35 in the tray 34, and the edge of the waterproof layer 24 on the side surface of the beam 3 is the waterproof layer receiving portion of the upright portion 36. 39 is superimposed on the top.

防水層23,24の施工後には、受皿体34の上にステンレス製の防水層押え43が配置される。この防水層押え43はL形に屈曲する枠形状に形成され、ボルト44を介して受皿体34に締結され、その締結力で防水層23,24が防水層受け部38,39に圧着される。さらに防水層押え43の上には目皿状をなすステンレス製のストレーナ46が配置され、ねじ47を介して防水層押え43に締結される。   After the construction of the waterproof layers 23 and 24, a stainless steel waterproof layer presser 43 is disposed on the tray body 34. The waterproof layer presser 43 is formed in a frame shape bent in an L shape, and is fastened to the tray body 34 via bolts 44, and the waterproof layers 23 and 24 are pressure-bonded to the waterproof layer receiving portions 38 and 39 by the fastening force. . Further, on the waterproof layer presser 43, a stainless steel strainer 46 having a plate-like shape is disposed and fastened to the waterproof layer presser 43 via a screw 47.

このような雨水排水装置によれば、第1の実施形態の場合と同様に、梁3で遮断された遮断領域B内に降った雨水がその遮断領域B側の一方のルーフドレイン33を通して排水パイプ32内に順次流入すると共に、その排水パイプ32内を流通して他方のルールドレイン33から排水可能領域Aに流出し、その排水可能領域Aから所定の排水部に排出され、したがって遮断領域Bに雨水が溜まって滞留するようなことがない。   According to such a rainwater drainage apparatus, as in the case of the first embodiment, the rainwater that has fallen into the blocking area B blocked by the beam 3 passes through the one roof drain 33 on the blocking area B side, and the drainage pipe. 32 sequentially flows into the drainage pipe 32, flows through the drainage pipe 32, flows out from the other rule drain 33 to the drainable area A, and is discharged from the drainable area A to a predetermined drainage section. Rainwater does not accumulate and stay.

屋上部1の床面2及び梁3の側面に対する防水性は、各ルーフドレイン33の受皿体34と防水層23,24とが重なり合って圧着することで確実に保持され、したがって雨水が屋上部1のコンクリートスラブに浸透するようなことがなく、高い防水性を長期に渡って保持することができる。   The waterproof property for the floor surface 2 and the side surfaces of the beam 3 of the rooftop 1 is reliably held by the pressure receiving body 34 and the waterproof layers 23 and 24 of each roof drain 33 being overlapped and pressure-bonded. It does not penetrate into concrete slabs and can maintain high waterproofness for a long time.

さらにこの第2の実施形態では、排水パイプ32の勾配に関わらず、各受皿体34の直立部36が垂直で、ベース部35が水平となるように支持されるため、その直立部36を梁3の起立側面と面一に的確に位置を合わせ、ベース部35を床面2と面一に的確に位置を合わせることができる。そして各受皿体34のベース部35の全体が平板状であるから、受皿体34の内側に水が溜まるようなこともない。   Furthermore, in this second embodiment, the upright portions 36 of the respective receiving bodies 34 are supported so as to be vertical and the base portion 35 is horizontal regardless of the gradient of the drainage pipe 32. Therefore, the base portion 35 can be accurately aligned with the floor surface 2. And since the whole base part 35 of each saucer body 34 is flat form, water does not accumulate inside the saucer body 34. FIG.

また、排水パイプ32と各ルーフドレイン33の受皿体34とが溶接されており、このためその排水パイプ32と受皿体34との間での水密性も高めることができる。そして、排水パイプ32がステンレス管で、ルーフドレイン33の受皿体34、防水層押え43、ストレーナ46がステンレス板であるため、雨水排水装置の全体の重量が軽量で、施工時の際の取り扱いが容易となり、作業能率が向上する。   Further, the drainage pipe 32 and the receiving body 34 of each roof drain 33 are welded, so that the watertightness between the drainage pipe 32 and the receiving body 34 can be enhanced. And since the drain pipe 32 is a stainless steel pipe, the receiving body 34 of the roof drain 33, the waterproof layer presser 43, and the strainer 46 are stainless steel plates, the overall weight of the rainwater drainage device is light and can be handled during construction. It becomes easy and work efficiency improves.

なお、前記第2の実施形態では、排水パイプ32,ルーフドレイン33の受皿体34、防水層押え43及びストレーナ46のすべての部材をステンレス製としたが、そのすべての部材あるいは一部の部材を他の耐食性に優れる金属材料とすることも可能である。   In the second embodiment, all the members of the drain pipe 32, the receiving body 34 of the roof drain 33, the waterproof layer presser 43 and the strainer 46 are made of stainless steel. However, all or part of the members are made of stainless steel. Other metal materials having excellent corrosion resistance can also be used.

この発明の第1の実施形態に係る雨水排水装置を示す断面図。Sectional drawing which shows the rainwater drainage apparatus which concerns on 1st Embodiment of this invention. その雨水排水装置のルーフドレインを示す正面図。The front view which shows the roof drain of the rainwater drainage apparatus. この発明の第2の実施形態に係る雨水排水装置を示す断面図。Sectional drawing which shows the rainwater drainage apparatus which concerns on 2nd Embodiment of this invention. その雨水排水装置のルーフドレインの受皿体を示す正面図。The front view which shows the saucer body of the roof drain of the rainwater drainage apparatus.

符号の説明Explanation of symbols

1…屋上部
2…床面
3…梁
5…排水パイプ
6…ルーフドレイン
9…受皿体
10…ベース部
11…直立部
12…排水口部
13…筒体
18…窪み部
21…突起
23.24…防水層
26…防水層押え
28…ストレーナ
32…排水パイプ
33…ルーフドレイン
34…受皿体
35…ベース部
36…直立部
37…排水口
43…防水層押え
46…ストレーナ
DESCRIPTION OF SYMBOLS 1 ... Rooftop 2 ... Floor surface 3 ... Beam 5 ... Drain pipe 6 ... Roof drain 9 ... Receptacle body 10 ... Base part 11 ... Upright part 12 ... Drain port part 13 ... Cylindrical body 18 ... Depression part 21 ... Protrusion 23.24 ... Waterproof layer 26 ... Waterproof layer presser 28 ... Strainer 32 ... Drain pipe 33 ... Roof drain 34 ... Tray body 35 ... Base part 36 ... Upright part 37 ... Drain port 43 ... Waterproof layer presser 46 ... Strainer

Claims (2)

コンクリート建屋の屋上部に逆梁工法による梁が突出し、その梁の一方側から他方側への雨水の流通を可能にする雨水排水装置であって、
前記梁の下部にその梁を貫通するように設けられる排水パイプと、この排水パイプの両端部に設けられるルーフドレインとを備え、
前記各ルーフドレインは、前記屋上部の床面に沿って配置されるベース部と、前記梁の起立側面に沿って配置される直立部とを有する断面ほぼL形状の受皿体を備え、前記直立部に前記排水パイプの端部が結合されて排水パイプが受皿体の内側に通じ、前記屋上部の床面及び前記梁の起立側面にそれぞれ防水層が貼り付けられ、これら防水層の縁が前記ベース部の所定の領域の防水層受け部及び直立部の所定の領域の防水層受け部にそれぞれ重ね合わされ、この状態で前記受皿体の上に防水層押えが締結固定され、その締結力で前記各防水層が防水層押えを介して前記各防水層受け部に圧着されることを特徴とする雨水排水装置。
A rainwater drainage device in which a beam by a reverse beam method protrudes from the top of a concrete building and allows the flow of rainwater from one side of the beam to the other,
A drainage pipe provided to penetrate the beam at the lower part of the beam, and a roof drain provided at both ends of the drainage pipe,
Each of the roof drains includes a saucer body having a substantially L-shaped cross section having a base portion disposed along the floor surface of the rooftop and an upright portion disposed along the standing side surface of the beam, The end of the drainage pipe is joined to the part, the drainage pipe leads to the inside of the saucer body, a waterproof layer is affixed to the floor surface of the rooftop and the standing side surface of the beam, respectively, The waterproof layer holder in a predetermined region of the base portion and the waterproof layer receiver in a predetermined region of the upright portion are respectively overlapped, and in this state, the waterproof layer presser is fastened and fixed on the tray body, and the fastening force The rainwater drainage device, wherein each waterproof layer is pressure-bonded to each waterproof layer receiving portion via a waterproof layer presser.
排水パイプが水平に対して所定の勾配で傾斜し、各ルーフドレインの受皿体がそれぞれ断面ほぼL字形の金属板からなり、これら受皿体の直立部が前記傾斜する排水パイプの両端部に垂直に取り付けられ、これら受皿体のベース部が屋上部の床面と面一に、直立部が梁の起立側面と面一に配置されることを特徴とする請求項1に記載の雨水排水装置。   The drain pipes are inclined at a predetermined gradient with respect to the horizontal, and the receiving bodies of the roof drains are each made of a substantially L-shaped metal plate, and the upright portions of these receiving bodies are perpendicular to both ends of the inclined drain pipes. The rainwater drainage device according to claim 1, wherein the rainwater drainage device is attached, wherein the base portion of the tray is flush with the floor surface of the roof and the upright portion is flush with the standing side surface of the beam.
JP2007006022A 2007-01-15 2007-01-15 Rainwater drainage Active JP4861837B2 (en)

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JP2006144377A (en) * 2004-11-19 2006-06-08 Hayakawa Rubber Co Ltd Waterproof roof drain structure and its construction method

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