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JP4030649B2 - Ventilation structure of corrugated sheet metal roof with single flow type - Google Patents

Ventilation structure of corrugated sheet metal roof with single flow type Download PDF

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Publication number
JP4030649B2
JP4030649B2 JP09401598A JP9401598A JP4030649B2 JP 4030649 B2 JP4030649 B2 JP 4030649B2 JP 09401598 A JP09401598 A JP 09401598A JP 9401598 A JP9401598 A JP 9401598A JP 4030649 B2 JP4030649 B2 JP 4030649B2
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Japan
Prior art keywords
plate
corrugated metal
metal plate
water
ventilation
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JP09401598A
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JPH11270082A (en
Inventor
睦稔 木下
徳人 浦
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/40—Slabs or sheets locally modified for auxiliary purposes, e.g. for resting on walls, for serving as guttering; Elements for particular purposes, e.g. ridge elements, specially designed for use in conjunction with slabs or sheets
    • E04D3/405—Wall copings

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Building Environments (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば折版などを用いた、片流れ形の波形金属板葺屋根の換気構造に関する。
【０００２】
【従来の技術】
例えば、片流れ形の折版屋根では、よく知られているように、水下側に、換気面戸が備えられ、この換気面戸によって、折版の下面側が換気されるようになされている。
【０００３】
しかしながら、この水下側の換気面戸のみでは、折版の下面側に広く換気効果が及ばず、そのため、折版下面に結露を生じさせてしまうことがある。規模の大きい建物の場合はそれがとりわけ顕著に現われやすい。
【０００４】
そこで、折版の下面側がより広い範囲にわたって換気されるようにするため、上記の水下側の換気面戸との組み合わせにおいて、図５（イ）に示すように、建物の妻面５１に換気ガラリ５２を設けたり、あるいは、図５（ロ）に示すように、水上側の外壁面５３に換気ガラリ５２を設けるようにすることがある。
【０００５】
【発明が解決しようとする課題】
しかしながら、換気ガラリ５２を図５（イ）のように建物の妻面５１に設ける構造では、水下側の換気面戸から折版下面側に流入した空気が、妻面５１の換気ガラリ５２に向けて、折版５４の稜線方向と直交する方向に向きを変えなければならず、この変向が折版５４それ自体や建物の梁によって妨げられ、通気がスムーズに行われにくいという問題がある。
【０００６】
これに対し、換気ガラリ５２を図５（ロ）のように建物の水上側の外壁面５３に設ける構造では、水下側の換気面戸から折版５４の下面側に流入した外気が、水上側の外壁面５３の換気ガラリ５２に向けて折版５４の稜線方向と平行に流通するため、スムーズな通気が実現され、換気が比較的良好に行われる。しかしその一方で、水上側の外壁面５３は、建物の正面となることが少なくなく、そこに換気ガラリ５２を設けると、建物の意匠性を損なわせたり、あるいはまた、名板を取付けようとする場合に換気ガラリ５２がその妨げになる、などの問題を派生する。水上側の外壁面５３は、換気ガラリ５２等の通気口のないスッキリとしたものにすることが望まれるところである。
【０００７】
本発明は、上記のような問題点に鑑み、水上側の外壁面を換気ガラリ等の通気口のないスッキリとしたものにすることができながら、しかも、折版等の波形金属板の下面側を効果的に換気することができて結露を防止できる、片流れ形の波形金属板葺屋根の換気構造を提供することを課題とする。
【０００８】
【課題を解決するための手段】
上記課題は、波形金属板が稜線を傾斜させて葺かれた片流れ形の波形金属板葺屋根の換気構造であって、
水下側において、波形金属板の下面側を波板金属板の稜線方向に開放する通気口が設けられると共に、
水上側において、パラペットと水切り板との間に、波形金属板の下面側を上方に開放する通気路が形成され、かつ、笠木が該通気路を通気可能に上方よりカバーして備えられてなることを特徴とする片流れ形の波形金属板葺屋根の換気構造によって解決される。
【０００９】
即ち、上記の構造では、水下側と水上側とにそれぞれ通気口や通気路が備えられているから、波形金属板の下面側に、水下側の通気口から水上側の通気路の通気口へと波形金属板の稜線方向に沿うスムーズな空気の流れが形成され、波形金属板の下面が、水下側から水上側の広い範囲にわたって換気される。のみならず、水上側において、パラペットと水切り板との間に、波形金属板の下面側を上方に開放する通気路が形成されていることにより、空気が波形金属板の下面に向けて引き寄せられるようにして通気路へと向かい、波形金属板の山部の下面側にも効果的に換気効果を及ぼすことができる。しかも、水上側の通気路は上方、即ち屋根上に開放されていることにより、屋根上側と水下側の通気口との圧力差を利用して、通気が活発に行われ、効果的に換気することができる。従って、これらにより、波形金属板の下面側の結露の発生を効果的に防止することができる。
【００１０】
しかも、上記のように、水上側では、通気路がパラペットと水切り板との間に形成されて上方に開放されている構造とされていることにより、水上側の外壁面を、換気ガラリ等の通気口のないスッキリとしたものにすることができる。
【００１１】
また、笠木が水上側の通気路を通気可能に上方よりカバーして備えられていることにより、雨水がこの通気路を通じて室内に流れ込んでしまうというようなことも、もちろんない。
【００１２】
【発明の実施の形態】
次に、本発明の実施形態を図面に基づいて説明する。
【００１３】
図１に示す片流れ形の波形金属板葺屋根において、１は波形金属板としての折版であり、折版１は、その稜線を傾斜させて、桁あるいは母屋２，２上にタイトフレーム１２を介して葺かれている。
【００１４】
この折版１の水下側には、この種の屋根においてよくなされているように、折版１の山部の裏面側の凹所に、通気口となる換気面戸３が備えられ、この換気面戸３を通じて、折版１の下面側に、水下側からの換気用の通気がなされるようになっている。
【００１５】
一方、折版１の水上側には、折版１の先端部から所定の間隔をおいて外壁を構成する外壁パネル４が備えられており、この外壁パネル４の上部は、折版１よりも上方に突出されて、パラペット５が形成されている。そして、図２及び図３に示すように、パラペット５の内面側には、水切り板６が、下地用の耐水合板７を介して取り付けられるが、この耐水合板７とパラペット５との間には、間隔保持材としての複数本の桟木８…が、互いに横方向に間隔をおいて上下方向に延ばされて介設され、これら桟木８…によって水切り板６とパラペット５との間、具体的には下地の耐水合板７とパラペット５との間に、折版１の下面側を上方に開放する通気路９が形成されている。間隔保持材である上記の各桟木８…は、あらかじめ外壁パネル４の裏面側に取り付けておくのが好ましい。こうすることにより、現場での作業において、通気路形成のための追加の作業工程がなくなり、建方を能率良く遂行していくことができて有利である。なお、４ａは、外壁パネル４の木桟である。
【００１６】
そして、パラペット５の天面部には笠木１０が設けられ、この笠木１０は、通気路９を通気可能なものとしながら、通気路９への雨水の侵入を防ぐように、通気路９を上方よりカバーして備えられている。
【００１７】
上記の屋根では、図１に示すように、水下側に換気面戸３が備えられ、水上側に通気路９が備えられているから、折版１の下面側には、水下側の換気面戸３から水上側の通気路９へと折版１の稜線方向に沿うスムーズな空気の流れが形成される。そして、水上側の通気路９は、パラペット５と水切り板６との間、即ち、折版１の上面高さ位置よりも上方に位置して備えられているから、折版１の下面側の空気は、折版１の下面へと引き寄せられるようにして通気路９へと向かい、折版１の山部１ａの下面側にも効果的に通気される。更に、水上側の通気路９は上方、即ち屋根上に開放されているから、屋根上側と、水下側の換気面戸３との圧力差を利用して、通気が活発に行われる。これにより、折版１の下面側が広い範囲にわたって効果的に換気され、折版１の下面に結露を生じるのが防止される。
【００１８】
そして、水上側では、パラペット５と水切り板６との間の通気路９を通じて換気するようにしているから、水上側の外壁面は、換気ガラリ等の通気口の露出しないスッキリとしたものになる。また、通気路９は笠木１０にて上記のような態様においてカバーされているから、積雪地などにおいて、通気路９が雪で詰ってしまうというような不都合が発生することもない。
【００１９】
図４に示す実施形態は、水上側の通気路９を形成するための間隔保持材として、桟木に替え、角波鉄板などによる金属製などの波板１５を用いたものである。即ち、この波板１５は、その稜線方向を上下方向に向けて水切り板６の下地材である耐水合板７とパラペット５との間にサンドイッチ状に介設され、この耐水合板７とパラペット５との間に通気路９を形成している。本実施形態によれば、波板１５を間隔保持材としたことにより、間隔保持材の横断面積を桟木による場合よりも小さくでき、水切り板６とパラペット５との間隔を狭くしながら、通気路９の通路面積を広く確保することができる利点がある。
【００２０】
以上に、本発明の実施形態を示したが、本発明はこれに限定されるものではなく、発明思想を逸脱しない範囲を各種の変更が可能である。例えば、上記実施形態では、屋根用の波形金属板として、折版１を用いた場合を示しているが、折版以外の各種波形金属板が用いられてよい。また、上記実施形態では、折版屋根に一般的に用いられる換気面戸３を水下側の通気口としているが、その他の態様において水下側の通気口が形成されたものであってもよい。要は、水下側において、波形金属板の下面側を波板金属板の稜線方向に開放する通気口が設けられていればよい。
【００２１】
【発明の効果】
上述の次第で、本発明の、片流れ形の波形金属板葺屋根の換気構造は、水下側において、波形金属板の下面側を波板金属板の稜線方向に開放する通気口が設けられると共に、水上側において、パラペットと水切り板との間に、波形金属板の下面側を上方に開放する通気路が形成されたものであるから、波形金属板の下面側を効果的に換気することができて結露を防止でき、しかも、水上側の外壁面を換気ガラリ等の通気口のないスッキリとしたものにすることができる。
【図面の簡単な説明】
【図１】一実施形態の屋根を示す断面図である。
【図２】図１のＩ−Ｉ線断面斜視図である。
【図３】水上側の分解断面斜視図である。
【図４】他の実施形態の屋根の水上側を示す断面斜視図である。
【図５】従来例を示すもので、図（イ）及び図（ロ）はそれぞれ形流れ形の折版屋根を採用する建物の斜視図である。
【符号の説明】
１…折版（波形金属板）
３…換気面戸（通気口）
５…パラペット
６…水切り板
８…桟木（間隔保持材）
９…通気路
１０…笠木
１５…波板（間隔保持材）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ventilation structure for a single-flow corrugated sheet metal roof using, for example, a folded plate.
[0002]
[Prior art]
For example, as is well known, a single-flow folded plate roof is provided with a ventilation surface door on the underwater side, and the lower surface side of the folded plate is ventilated by this ventilation surface door.
[0003]
However, with only this underwater ventilation door, the ventilation effect does not reach the lower surface side of the folding plate widely, and therefore condensation may occur on the lower surface of the folding plate. This is especially true for large buildings.
[0004]
Therefore, in order to ventilate the lower surface side of the folding plate over a wider range, as shown in FIG. A louver 52 may be provided, or a ventilation louver 52 may be provided on the outer wall surface 53 above the water as shown in FIG.
[0005]
[Problems to be solved by the invention]
However, in the structure in which the ventilation louver 52 is provided on the end face 51 of the building as shown in FIG. 5 (a), the air that has flowed into the lower surface of the folding plate from the ventilating face door on the underwater side enters the ventilation louver 52 on the end face 51. Therefore, the direction must be changed in a direction perpendicular to the direction of the ridgeline of the folding plate 54, and this change is hindered by the folding plate 54 itself or the beam of the building, and there is a problem that ventilation is not easily performed. .
[0006]
On the other hand, in the structure in which the ventilation louver 52 is provided on the outer wall surface 53 on the water upper side of the building as shown in FIG. 5 (b), the outside air that has flowed into the lower surface side of the folding plate 54 from the water ventilation side door Since it circulates in parallel with the ridgeline direction of the folding plate 54 toward the ventilation louver 52 of the outer wall surface 53 on the side, smooth ventilation is realized and ventilation is performed relatively well. However, on the other hand, the water-side outer wall surface 53 often becomes the front of the building, and if the ventilation gallery 52 is provided there, the design of the building is impaired, or the name plate is attached. In such a case, the ventilation louver 52 obstructs the problem. The water-side outer wall surface 53 is desired to have a clear air vent, such as the ventilation louver 52.
[0007]
In view of the above-described problems, the present invention can make the outer wall surface on the upper side clean without an air vent such as a ventilator, and the lower surface side of a corrugated metal plate such as a folded plate It is an object of the present invention to provide a ventilation structure for a single-flow corrugated sheet metal roof that can effectively ventilate and prevent condensation.
[0008]
[Means for Solving the Problems]
The above-mentioned problem is a ventilation structure of a corrugated metal plate roof of a single flow type in which the corrugated metal plate is rolled with an inclined ridgeline,
On the underwater side, a vent opening that opens the lower surface side of the corrugated metal plate in the ridge line direction of the corrugated metal plate is provided,
On the water upper side, an air passage that opens the lower surface side of the corrugated metal plate upward is formed between the parapet and the draining plate, and the headboard is provided to cover the air passage from above so as to be able to vent. It is solved by the ventilation structure of the corrugated sheet metal roof with a single-flow shape.
[0009]
That is, in the above structure, since the vents and the air passages are provided on the water side and the water side, respectively, the ventilation of the water side air passages from the water side vents to the lower surface side of the corrugated metal plate. A smooth air flow along the ridgeline direction of the corrugated metal plate is formed to the mouth, and the lower surface of the corrugated metal plate is ventilated over a wide range from the water side to the water side. In addition, on the water upper side, an air passage that opens the lower surface side of the corrugated metal plate upward is formed between the parapet and the draining plate, so that air is drawn toward the lower surface of the corrugated metal plate. In this way, the ventilation effect can be effectively exerted on the lower surface side of the peak portion of the corrugated metal plate toward the air passage. In addition, since the water-side ventilation path is open upward, that is, on the roof, ventilation is actively performed using the pressure difference between the roof-side and the water-side ventilation holes, and ventilation is effectively performed. can do. Therefore, it is possible to effectively prevent the occurrence of condensation on the lower surface side of the corrugated metal plate.
[0010]
Moreover, as described above, on the water upper side, the air passage is formed between the parapet and the draining plate and is open upward, so that the outer wall surface on the water upper side is made of a ventilation gallery or the like. It can be made neat without vents.
[0011]
Further, since the headboard is provided so as to cover the air passage above the water from above so that rainwater can flow into the room through this air passage, of course.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0013]
In the single-flow corrugated metal plate roof shown in FIG. 1, reference numeral 1 denotes a folded plate as a corrugated metal plate, and the folded plate 1 has its ridge line inclined and a tight frame 12 on the girders or purlins 2 and 2. Have been sown.
[0014]
On the underwater side of the folding plate 1, as is often done in this type of roof, a ventilating surface door 3 serving as a vent is provided in a recess on the back side of the mountain portion of the folding plate 1. Through the ventilation surface door 3, ventilation for ventilation from the underwater side is made on the lower surface side of the folding plate 1.
[0015]
On the other hand, an outer wall panel 4 constituting an outer wall is provided on the water side of the folding plate 1 at a predetermined interval from the front end portion of the folding plate 1, and the upper portion of the outer wall panel 4 is higher than the folding plate 1. A parapet 5 is formed protruding upward. As shown in FIGS. 2 and 3, a draining plate 6 is attached to the inner surface side of the parapet 5 via a water-resistant plywood 7 for a base, and between the water-resistant plywood 7 and the parapet 5. A plurality of crosspieces 8 as spacing members are provided so as to extend in the vertical direction at intervals in the lateral direction, and between the draining plate 6 and the parapet 5 by the crosspieces 8. A vent passage 9 is formed between the base water-resistant plywood 7 and the parapet 5 so as to open the lower surface side of the folding plate 1 upward. It is preferable to attach each of the above-mentioned crosspieces 8... Which is a spacing member to the back side of the outer wall panel 4 in advance. By doing so, there is no additional work process for forming the air passage in the work on site, and it is advantageous that the construction can be performed efficiently. Reference numeral 4a denotes a wooden cross of the outer wall panel 4.
[0016]
A headboard 10 is provided on the top surface of the parapet 5, and the headboard 10 allows the air passage 9 to be ventilated, while the air passage 9 is opened from above so as to prevent rainwater from entering the air passage 9. It is provided with a cover.
[0017]
In the above roof, as shown in FIG. 1, the ventilation surface door 3 is provided on the water side and the air passage 9 is provided on the water side. A smooth air flow along the ridge line direction of the folding plate 1 is formed from the ventilation face door 3 to the air passage 9 on the water side. The water-side air passage 9 is provided between the parapet 5 and the draining plate 6, that is, located above the upper surface height position of the folding plate 1. The air is drawn toward the lower surface of the folding plate 1 toward the ventilation path 9, and is effectively vented to the lower surface side of the peak portion 1 a of the folding plate 1. In addition, since the water-side air passage 9 is open upward, that is, on the roof, ventilation is actively performed by utilizing the pressure difference between the roof upper side and the water-side ventilation surface door 3. Thereby, the lower surface side of the folding plate 1 is effectively ventilated over a wide range, and it is possible to prevent condensation on the lower surface of the folding plate 1.
[0018]
And since it ventilates through the ventilation path 9 between the parapet 5 and the draining board 6 on the water upper side, the outer wall surface on the water upper side is a refreshing one that does not expose the vents such as ventilation louvers. . In addition, since the air passage 9 is covered with the headboard 10 in the above-described manner, there is no inconvenience that the air passage 9 is clogged with snow in a snowy area or the like.
[0019]
In the embodiment shown in FIG. 4, a corrugated plate 15 made of metal such as a square wave iron plate is used instead of a pier as a gap retaining member for forming the water-side air passage 9. In other words, the corrugated plate 15 is sandwiched between the water-resistant plywood 7 and the parapet 5 which are the base material of the draining plate 6 with the ridge line direction directed in the vertical direction. An air passage 9 is formed between them. According to the present embodiment, by using the corrugated plate 15 as the spacing member, the cross-sectional area of the spacing member can be made smaller than in the case of the pier, and the air passage can be made while narrowing the spacing between the draining plate 6 and the parapet 5. There is an advantage that the passage area of 9 can be secured widely.
[0020]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the said embodiment, although the case where the folding plate 1 is used is shown as a corrugated metal plate for roofs, various corrugated metal plates other than a folding plate may be used. Moreover, in the said embodiment, although the ventilation surface door 3 generally used for a folding roof is used as the water-side vent, in other aspects, the water-side vent may be formed. Good. In short, on the underwater side, a vent opening that opens the lower surface side of the corrugated metal plate in the ridge line direction of the corrugated metal plate may be provided.
[0021]
【The invention's effect】
As described above, the ventilating structure of the corrugated metal sheet roof of the single flow type of the present invention is provided with a vent opening in the ridge line direction of the corrugated metal sheet on the underwater side, On the water upper side, an air passage that opens the lower surface side of the corrugated metal plate upward is formed between the parapet and the draining plate, so that the lower surface side of the corrugated metal plate can be effectively ventilated. Condensation can be prevented, and the outer wall surface on the water side can be made clean with no ventilation holes such as ventilation louvers.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a roof according to an embodiment.
FIG. 2 is a cross-sectional perspective view taken along the line II of FIG.
FIG. 3 is an exploded cross-sectional perspective view of the water side.
FIG. 4 is a cross-sectional perspective view showing a water side of a roof according to another embodiment.
FIGS. 5A and 5B show a conventional example, and FIGS. 5A and 5B are perspective views of a building that employs a stencil-shaped folded roof. FIG.
[Explanation of symbols]
1 ... Folded plate (corrugated metal plate)
3… Ventilation door (vent)
5 ... Parapet 6 ... Draining board 8 ... Crosspiece (space retaining material)
9 ... Ventilation path 10 ... Kasagi 15 ... Corrugated sheet

Claims (1)

波形金属板が稜線を傾斜させ、水上側を端部まで真っ直ぐにして葺かれた片流れ形の波形金属板葺屋根の換気構造であって、
水下側において、波形金属板の下面側を波板金属板の稜線方向に開放する通気口が設けられると共に、
水上側において、受けた水を波形金属板の上面側に流す水切り板が備えられると共に、該水切り板とパラペットとの間に波形金属板及び水切り板とは別体の間隔保持材が介設され、該間隔保持材によって水切り板とパラペットとの間に、上下方向に延びて上方に開放された通気路が形成され、該通気路を通じて波形金属板の下面側が上方に開放されるようになされており、かつ
パラペットの天面部に設けられた笠木が、前記通気路を通気可能なものにしながら、受けた水を前記水切り板に流すように、前記通気路を上方よりカバーして備えられてなることを特徴とする片流れ形の波形金属板葺屋根の換気構造。The corrugated metal plate is a ventilation structure of a single-flow corrugated metal plate roof that is rolled with the ridgeline inclined and the water side straight up to the end ,
On the underwater side, a vent opening that opens the lower surface side of the corrugated metal plate in the ridge line direction of the corrugated metal plate is provided,
On the upper side of the water, there is provided a draining plate for flowing the received water to the upper surface side of the corrugated metal plate, and a spacing member separate from the corrugated metal plate and the draining plate is interposed between the draining plate and the parapet. The gap retaining member forms a vent passage extending in the vertical direction and opened upward between the draining plate and the parapet, and the lower surface side of the corrugated metal plate is opened upward through the vent passage. And
Characterized coping provided on the top surface portion of the parapet is, while the vent path capable venting, the received water to flow to the deflector board, to become provided with said vent passage to cover from above A single-flow corrugated sheet metal roof construction.
JP09401598A 1998-03-23 1998-03-23 Ventilation structure of corrugated sheet metal roof with single flow type Expired - Fee Related JP4030649B2 (en)

Priority Applications (1)

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JP09401598A JP4030649B2 (en) 1998-03-23 1998-03-23 Ventilation structure of corrugated sheet metal roof with single flow type

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Application Number Priority Date Filing Date Title
JP09401598A JP4030649B2 (en) 1998-03-23 1998-03-23 Ventilation structure of corrugated sheet metal roof with single flow type

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JP4030649B2 true JP4030649B2 (en) 2008-01-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004244964A (en) * 2003-02-14 2004-09-02 Isao Okawa Building
JP4969970B2 (en) * 2006-09-26 2012-07-04 ミサワホーム株式会社 Single-flow roof ventilation structure
JP6022863B2 (en) * 2012-09-05 2016-11-09 積水化学工業株式会社 Ventilation structure and building
JP6211307B2 (en) * 2013-05-24 2017-10-11 トヨタホーム株式会社 Ventilation structure and building
CN114482424B (en) * 2022-03-15 2023-03-31 南通新华建筑集团有限公司 Secondary pouring construction method for parapet wall with hidden rabbet

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