JP6773394B2 - How to build a flat roof ventilation structure and a flat roof ventilation structure - Google Patents

How to build a flat roof ventilation structure and a flat roof ventilation structure Download PDF

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JP6773394B2
JP6773394B2 JP2015068061A JP2015068061A JP6773394B2 JP 6773394 B2 JP6773394 B2 JP 6773394B2 JP 2015068061 A JP2015068061 A JP 2015068061A JP 2015068061 A JP2015068061 A JP 2015068061A JP 6773394 B2 JP6773394 B2 JP 6773394B2
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roofing material
flat roof
outside air
steel frame
frame beam
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JP2016188470A (en
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万里子 森
万里子 森
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Daiwa House Industry Co Ltd
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この発明は、陸屋根の小屋裏内に外気を取り入れる陸屋根換気構造に関する。 The present invention relates to a flat roof ventilation structure that takes in outside air inside a flat roof cabin.

特許文献１には、陸屋根を有する建物の屋内と屋外とを換気する換気装置が開示されている。この換気装置は、建物の屋内と屋外とを仕切る外壁の開口に取り付けられ、内部空間が屋内に連通する中空の装置本体と、装置本体の外壁側を覆う位置に取り付けられる化粧カバーを備えている。化粧カバーの屋外側の面は、建物の外壁表面と略同一視される面上に形成されている。 Patent Document 1 discloses a ventilation device that ventilates indoors and outdoors of a building having a flat roof. This ventilation device is attached to the opening of the outer wall that separates the indoor and outdoor parts of the building, and has a hollow device body that communicates the internal space indoors and a decorative cover that is attached at a position that covers the outer wall side of the device body. .. The outdoor side surface of the decorative cover is formed on a surface that is substantially identified with the outer wall surface of the building.

また、特許文献２には、換気装置が開示されている。この換気装置は、断面がリップ溝型状で長手方向に沿って凹部が形成された本体部と、上記本体部内で上記長手方向に沿って配置された水返し板とを備えている。上記本体部の凹部には対向配置で第１換気口が形成されており、上記対向配置された第１換気口の間の凹部底部の裏面に対向する側には上記長手方向に沿って第２換気口が形成されている。 Further, Patent Document 2 discloses a ventilation device. This ventilation device includes a main body portion having a lip groove-shaped cross section and recesses formed along the longitudinal direction, and a water return plate arranged in the main body portion along the longitudinal direction. A first ventilation port is formed in the recess of the main body portion in a facing arrangement, and a second ventilation port is formed along the longitudinal direction on the side facing the back surface of the recess bottom portion between the first ventilation ports arranged facing each other. Ventilation openings are formed.

特開２００４−２１１９５６号公報Japanese Unexamined Patent Publication No. 2004-211956 特開２０１４−１９００８０号公報Japanese Unexamined Patent Publication No. 2014-19080

ところで、陸屋根の建物では、外壁材の上端が陸屋根の極力近くに至るようにする方が美観を向上させる上で望ましい。しかしながら、上記従来の換気構造を有する陸屋根建物では、このような要求を満たすことはできなかった。 By the way, in a flat roof building, it is desirable to make the upper end of the outer wall material as close as possible to the flat roof in order to improve the aesthetic appearance. However, such a requirement could not be satisfied by the flat roof building having the above-mentioned conventional ventilation structure.

この発明は、上記の事情に鑑み、外壁材の上端を陸屋根の近くに極力近づけつつ、確実な換気を行うことを容易にする陸屋根換気構造を提供することを課題とする。 In view of the above circumstances, it is an object of the present invention to provide a flat roof ventilation structure that facilitates reliable ventilation while bringing the upper end of the outer wall material as close as possible to the flat roof.

この発明の陸屋根換気構造は、上記の課題を解決するために、鉄骨梁と、この鉄骨梁に固定され、陸屋根の屋根材を支持する支持金具と、外壁材の上方側で上記支持金具により形成される外気通路と、上記外壁材の上端よりも上側に位置する壁面部に形成された外気取入口と、上記鉄骨梁に形成された開口を通り上記外気通路に通じる小屋裏換気路と、上記鉄骨梁および上記開口を被覆する耐火材とを備えることを特徴とする。 The land roof ventilation structure of the present invention is formed by a steel beam, a support metal fitting fixed to the steel beam to support the roof material of the land roof, and the support metal fitting on the upper side of the outer wall material in order to solve the above problems. An outside air passage, an outside air intake formed on a wall surface located above the upper end of the outer wall material, a hut back ventilation path leading to the outside air passage through an opening formed in the steel beam, and the above. It is characterized by including a steel beam and a fireproof material that covers the opening.

上記の構成であれば、上記外気通路は外壁材の上方側で上記支持金具により形成されるので、上記外壁材の上端を上記支持金具の箇所に近づけても上記外気通路を確保することが容易である。よって、外壁材の上端を陸屋根の近くに極力近づけつつ、確実な換気を行うことが容易になる。また、例えば、建方工事にて軒先の屋根材を固定した後でも、上記外気通路を利用して屋外側から上記鉄骨梁の屋外側の耐火材の被覆工事を行うことを可能にできるので、上記鉄骨梁の屋外側の耐火材の被覆工事のために上記軒先の屋根材の固定作業を遅らせる必要がなく、作業が効率的になる。 With the above configuration, since the outside air passage is formed by the support metal fitting on the upper side of the outer wall material, it is easy to secure the outside air passage even if the upper end of the outer wall material is brought close to the support metal fitting. Is. Therefore, it becomes easy to perform reliable ventilation while keeping the upper end of the outer wall material as close as possible to the flat roof. Further, for example, even after fixing the roofing material at the eaves in the construction work, it is possible to perform the covering work of the refractory material on the outdoor side of the steel frame beam from the outdoor side by using the outside air passage. It is not necessary to delay the fixing work of the roofing material at the eaves because of the work of covering the fireproof material on the outdoor side of the steel frame beam, and the work becomes efficient.

上記陸屋根の最も端側の屋根材は他の屋根材よりも薄肉で上記他の屋根材と上面が略面一に設けられることで下側に空間部が形成されており、この空間部が上記外気通路の上側部を構成するようにしてもよい。これによれば、外壁材の上端を陸屋根の近くに極力近づけても、上記外気通路において所要の容量を確保することが容易になる。 The roofing material on the farthest side of the flat roof is thinner than the other roofing materials, and a space portion is formed on the lower side by providing the upper surface substantially flush with the other roofing material. The upper part of the outside air passage may be formed. According to this, even if the upper end of the outer wall material is brought as close as possible to the flat roof, it becomes easy to secure the required capacity in the outside air passage.

上記支持金具は、下面側に脚部を上記鉄骨梁の延設方向に間隔をおいて備えており、上記脚部の屋内側が上記鉄骨梁に固定されており、上記屋内側の部分を介して上記他の屋根材が支持されており、上記脚部の屋外側には嵩上げ部が設けられており、上記嵩上げ部上に上記最も端側の屋根材が置かれていてもよい。 The support metal fittings are provided with legs on the lower surface side at intervals in the extending direction of the steel frame beam, and the indoor side of the leg portion is fixed to the steel frame beam via the indoor side portion. The other roofing material is supported, a raised portion is provided on the outdoor side of the leg portion, and the roofing material on the farthest end side may be placed on the raised portion.

上記壁面部に樋が設けられていてもよい。また、上記樋よりも上側に上記外気取入口が形成されていてもよい。また、上記樋よりも上側に軒先部が形成されており、この軒先部と上記樋との間に、上記外気取入口に通じる換気装置が設けられていてもよい。これによれば、上記換気装置や軒先部が上記樋によって隠されるので、建物の美観が向上する。 A gutter may be provided on the wall surface. Further, the outside air intake may be formed above the gutter. Further, an eaves tip portion is formed above the gutter, and a ventilation device leading to the outside air intake port may be provided between the eaves tip portion and the gutter. According to this, the ventilation device and the eaves are hidden by the gutter, so that the aesthetic appearance of the building is improved.

本発明であれば、外壁材の上端を陸屋根の近くに極力近づけつつ、確実に換気が行えるという効果を奏する。 According to the present invention, it is possible to ensure ventilation while keeping the upper end of the outer wall material as close as possible to the flat roof.

本発明の実施形態に係る陸屋根換気構造を示した概略の断面図である。It is a schematic cross-sectional view which showed the flat roof ventilation structure which concerns on embodiment of this invention. 図１の陸屋根換気構造で用いた支持金具を示した図であって、同図（Ａ）は平面図、同図（Ｂ）は正面図、同図（Ｃ）は側面図である。It is a figure which showed the support metal fitting used in the flat roof ventilation structure of FIG. 1, the figure (A) is a plan view, the figure (B) is a front view, and the figure (C) is a side view. 同図（Ａ）および同図（Ｂ）は、図１の陸屋根換気構造における屋根材の支持構造および支持金具を示した説明図である。FIGS. (A) and (B) are explanatory views showing a support structure and support metal fittings for a roofing material in the flat roof ventilation structure of FIG.

以下、この発明の実施の形態を添付図面に基づいて説明する。
図１に示すように、この実施形態に係る陸屋根換気構造は、陸屋根１を有し、梁として鉄骨梁（例えばＨ形鋼）２を有した鉄骨造りの建物に適用される。上記陸屋根１の最も端側（軒先側）の屋根材１１は、水上側の他の屋根材１２よりも薄肉であり、上記他の屋根材１２と上面が略面一に設けられている。上記屋根材１１、１２は例えば、ＡＬＣ（Ａｕｔｏｃｌａｖｅｄ Ｌｉｇｈｔｗｅｉｇｈｔ Ｃｏｎｃｒｅｔｅ）からなる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the flat roof ventilation structure according to this embodiment is applied to a steel-framed building having a flat roof 1 and a steel beam (for example, H-shaped steel) 2 as a beam. The roofing material 11 on the most end side (eave tip side) of the flat roof 1 is thinner than the other roofing material 12 on the water side, and the other roofing material 12 and the upper surface are provided substantially flush with each other. The roofing materials 11 and 12 are made of, for example, ALC (Autoclaved Lightweight Concrete).

また、上記建物の外壁は外壁パネル３によって形成されている。この外壁パネル３の上端は上記鉄骨梁２の下側フランジよりも上方に位置している。ただし、外壁パネル３の上端は、上記鉄骨梁２の上側フランジの位置よりも下方に位置しており、外壁パネル３の裏面は、上記鉄骨梁２のフランジの屋外側端から離間している。また、上記建物において、上記鉄骨梁２の下側フランジの下側に天井４が造られている。 Further, the outer wall of the building is formed by the outer wall panel 3. The upper end of the outer wall panel 3 is located above the lower flange of the steel beam 2. However, the upper end of the outer wall panel 3 is located below the position of the upper flange of the steel frame beam 2, and the back surface of the outer wall panel 3 is separated from the outdoor side end of the flange of the steel frame beam 2. Further, in the building, a ceiling 4 is built under the lower flange of the steel beam 2.

上記鉄骨梁２の上側フランジ上には支持金具５がボルト５０によって固定されている。上記支持金具５は、図２（Ａ）、図２（Ｂ）および図２（Ｃ）にも示すように、脚部５１と、板部材５２と、嵩上げ部５３とを備えている。上記脚部５１は上記鉄骨梁２の延設方向に間隔をおいて２本設けられる。また、上記脚部５１は板状部の両縁にそれぞれ折り曲げ片を有した断面コ字形状を有しており、上記板状部を下側にし、上記折り曲げ片を上方に向けて設けられている。 A support fitting 5 is fixed on the upper flange of the steel beam 2 by bolts 50. As shown in FIGS. 2 (A), 2 (B), and 2 (C), the support metal fitting 5 includes a leg portion 51, a plate member 52, and a raised portion 53. Two legs 51 are provided at intervals in the extending direction of the steel beam 2. Further, the leg portion 51 has a U-shaped cross section having bent pieces on both edges of the plate-shaped portion, and is provided with the plate-shaped portion on the lower side and the bent pieces facing upward. There is.

上記板部材５２は上記鉄骨梁２の延設方向に長尺に形成されており、上記２本の脚部５１上に掛け渡されている。なお、上記板部材５２上には、ＡＬＣ用パッキン材が設けられていている。 The plate member 52 is formed long in the extending direction of the steel frame beam 2, and is hung on the two leg portions 51. A packing material for ALC is provided on the plate member 52.

上記嵩上げ部５３は、屋内側鉛直部５３ａと、２つの屋外側鉛直部５３ｂと、水平板部５３ｃとからなる。上記屋内側鉛直部５３ａは上記鉄骨梁２の延設方向に長尺に形成されており、その下部は上記脚部５１に接続されている。また、上記屋外側鉛直部５３ｂは、上記脚部５１の幅と同幅に形成されており、上記脚部５１の屋外側端から上記水平板部５３ｃの下面にかけて設けられ、その上部は上記水平板部５３ｃに接続され、下部は上記脚部５１に接続されている。上記水平板部５３ｃは、上記鉄骨梁２の延設方向に長尺に形成されており、また、上記屋外側鉛直部５３ｂよりも屋外側に出ている。 The raised portion 53 includes an indoor vertical portion 53a, two outdoor vertical portions 53b, and a horizontal plate portion 53c. The indoor vertical portion 53a is formed to be elongated in the extending direction of the steel beam 2, and the lower portion thereof is connected to the leg portion 51. Further, the outdoor side vertical portion 53b is formed to have the same width as the width of the leg portion 51, and is provided from the outdoor side end of the leg portion 51 to the lower surface of the horizontal plate portion 53c, and the upper portion thereof is horizontal. It is connected to the plate portion 53c, and the lower portion is connected to the leg portion 51. The horizontal plate portion 53c is formed to be long in the extending direction of the steel frame beam 2, and is projected to the outdoor side of the outdoor side vertical portion 53b.

図３（Ａ）および図３（Ｂ）にも示すように、上記脚部５１の屋内側部位が上記ボルト５０によって、上記鉄骨梁２に固定されており、上記板部材５２上に上記他の屋根材１２が支持されている。そして、上記脚部５１の屋外側部位に位置する上記嵩上げ部５３によって上記最も端側の屋根材１１が支持されている。 As shown in FIGS. 3 (A) and 3 (B), the indoor side portion of the leg portion 51 is fixed to the steel frame beam 2 by the bolt 50, and the other parts are mounted on the plate member 52. The roofing material 12 is supported. The roofing material 11 on the farthest end side is supported by the raised portion 53 located on the outdoor side portion of the leg portion 51.

上記他の屋根材１２には貫通孔１２ａが形成されており、この貫通孔１２ａにセットされた留め金具７の下端部が上記板部材５２の下面に係合することで、当該他の屋根材１２が上記支持金具５を介して上記鉄骨梁２に固定される。また、上記最も端側の屋根材１１は、ビス７１によって上記嵩上げ部５３における上記水平板部５３ｃに留め付けられている。 A through hole 12a is formed in the other roofing material 12, and the lower end of the fastener 7 set in the through hole 12a engages with the lower surface of the plate member 52 to engage the other roofing material. 12 is fixed to the steel frame beam 2 via the support metal fitting 5. Further, the roofing material 11 on the farthest end side is fastened to the horizontal plate portion 53c in the raised portion 53 by screws 71.

図１に示したように、上記外壁パネル３の上端から上記支持金具５により形成される空間によって外気通路６が形成されている。そして、上記外壁パネル３の上端よりも上側であって、当該外壁パネル３の外面よりも外側に位置する壁面部３１に上記外気通路６に通じる外気取入口６１が形成されている。また、小屋裏換気路６２は、上記鉄骨梁２のウェブに形成された開口を通り上記外気通路６に通じている。上記ウェブに形成された開口には耐火材からなる耐火筒部６３が設けられている。また、シート状の耐火材６４によって、上記鉄骨梁２の屋外側および屋内側が被覆されている。なお、上記鉄骨梁２の下部側では、上記シート状の耐火材６４の下端側を、上記外壁パネル３の裏面のグラスウール側に至らせている。また、上記鉄骨梁２の上部側において、上記シート状の耐火材６４の上端側を、上記脚部５１、５１間から上記他の屋根材１２の下面側に至らせている。 As shown in FIG. 1, the outside air passage 6 is formed by the space formed by the support metal fitting 5 from the upper end of the outer wall panel 3. An outside air intake 61 leading to the outside air passage 6 is formed on the wall surface portion 31 which is above the upper end of the outer wall panel 3 and is located outside the outer surface of the outer wall panel 3. Further, the cabin back ventilation passage 62 passes through the opening formed in the web of the steel frame beam 2 and leads to the outside air passage 6. A refractory cylinder portion 63 made of a refractory material is provided in the opening formed in the web. Further, the outdoor side and the indoor side of the steel frame beam 2 are covered with the sheet-shaped refractory material 64. On the lower side of the steel beam 2, the lower end side of the sheet-shaped refractory material 64 reaches the glass wool side of the back surface of the outer wall panel 3. Further, on the upper side of the steel frame beam 2, the upper end side of the sheet-shaped refractory material 64 extends from between the legs 51 and 51 to the lower surface side of the other roofing material 12.

そして、上述したように、上記最も端側の屋根材１１が上記他の屋根材１２よりも薄肉で上記他の屋根材１２と上面が略面一に設けられていることで、空間部６０が形成されている。換言すれば、上記支持金具５の上記嵩上げ部５３によって、上記空間部６０が形成される。この空間部６０は、上記外気通路６の上側部を構成することになる。 Then, as described above, the roofing material 11 on the farthest end side is thinner than the other roofing material 12, and the space portion 60 is provided with the other roofing material 12 and the upper surface substantially flush with each other. It is formed. In other words, the space portion 60 is formed by the raised portion 53 of the support metal fitting 5. The space portion 60 constitutes the upper portion of the outside air passage 6.

上記外壁パネル３の上端よりも上側を構成する上記壁面部３１は、例えば、下地材となる珪酸カルシウム板からなる。そして、上記壁面部３１を覆うように鼻隠し板が固定されており、この鼻隠し板に軒樋８１が取り付けられている。さらに、上記軒樋８１よりも上側の位置に上記外気取入口６１が形成されている。 The wall surface portion 31 forming above the upper end of the outer wall panel 3 is made of, for example, a calcium silicate plate as a base material. A nose hiding plate is fixed so as to cover the wall surface portion 31, and an eaves gutter 81 is attached to the nose hiding plate. Further, the outside air intake 61 is formed at a position above the eaves gutter 81.

また、上記軒樋８１よりも上側に軒先部（水切り）８２が取り付けられている。この軒先部８２は、下側板８２ａを備えており、この下側板８２ａによって通気部を形成している。そして、この軒先部８２の下側板８２ａと上記軒樋８１との間に、換気装置８３が設けられている。この換気装置８３の上面部は、上記通気部に通じ、この通気部を通じて上記外気取入口６１に通じている。上記換気装置８３は、従来鋼で示した特許文献２に開示された軒下換気装置と同じ水返し構造を有するが、このような構造に限定されるものではない。上記換気装置８３から取り入れられた外気は、上記通気部、上記外気取入口６１、上記空間部６０および上記外気通路６を通じて、上記耐火筒部６３から上記小屋裏換気路６２へと至る。 Further, the eaves tip (drainer) 82 is attached above the eaves gutter 81. The eaves portion 82 is provided with a lower plate 82a, and the lower plate 82a forms a ventilation portion. A ventilation device 83 is provided between the lower plate 82a of the eaves tip 82 and the eaves gutter 81. The upper surface portion of the ventilation device 83 communicates with the ventilation portion, and communicates with the outside air intake port 61 through the ventilation portion. The ventilation device 83 has the same water return structure as the eaves ventilation device disclosed in Patent Document 2 shown in conventional steel, but is not limited to such a structure. The outside air taken in from the ventilation device 83 reaches from the refractory cylinder portion 63 to the cabin back ventilation passage 62 through the ventilation portion, the outside air intake port 61, the space portion 60, and the outside air passage 6.

上記の構成であれば、上記外気通路６は上記支持金具５の配置箇所を通るように形成されているので、上記外壁パネル３の上端を上記支持金具５の箇所に近づけても上記外気通路６を確保することが容易である。よって、外壁パネル３の上端を陸屋根１に極力近づけつつ、確実な換気を行うことが可能になる。また、例えば、建方工事にて上記最も端側の屋根材１１を固定した後でも、上記外気通路６を利用して屋外側から上記鉄骨梁２の屋外側の耐火材６４の被覆工事を行うことを可能にできるので、上記鉄骨梁２の屋外側の耐火材６４の被覆工事のために上記最も端側の屋根材１１の固定作業を遅らせる必要がなく、作業が効率的になる。 In the above configuration, since the outside air passage 6 is formed so as to pass through the place where the support metal fitting 5 is arranged, even if the upper end of the outer wall panel 3 is brought close to the place of the support metal fitting 5, the outside air passage 6 It is easy to secure. Therefore, it is possible to perform reliable ventilation while bringing the upper end of the outer wall panel 3 as close as possible to the flat roof 1. Further, for example, even after the roofing material 11 on the farthest end side is fixed in the construction work, the fireproof material 64 on the outdoor side of the steel frame beam 2 is covered from the outdoor side by using the outside air passage 6. Since it is possible to do so, it is not necessary to delay the fixing work of the roofing material 11 on the farthest end side for the covering work of the refractory material 64 on the outdoor side of the steel frame beam 2, and the work becomes efficient.

上記陸屋根１の最も端側の屋根材１１が他の屋根材１２よりも薄肉であることで形成される上記空間部６０によって上記外気通路６の上側部が構成されると、外壁パネル３の上端を陸屋根１に極力近づけても、上記外気通路６において所要の容量を確保することが容易になる。 When the upper portion of the outside air passage 6 is formed by the space portion 60 formed by the roof material 11 on the outermost end side of the flat roof 1 being thinner than the other roofing materials 12, the upper end of the outer wall panel 3 is formed. Even if the roof 1 is brought as close as possible to the flat roof 1, it becomes easy to secure the required capacity in the outside air passage 6.

また、上記換気装置８３や軒先部８２が上記軒樋８１によって隠されると、建物の美観が向上する。 Further, when the ventilation device 83 and the eaves tip 82 are hidden by the eaves gutter 81, the aesthetic appearance of the building is improved.

なお、上記の例では、上記板部材５２を上記鉄骨梁２の延設方向に長尺に形成することで上記支持金具５を長尺物として作製したが、これに限らず、上記支持金具５を例えば上記脚部５１の幅寸法のピース物として作製し、これを点在配置するようにしてもよい。また、上記壁面部３１は、下地材となる珪酸カルシウム板により構成されたが、これに限らず、上記外壁パネル３と同様に構成されてもよい。 In the above example, the support metal fitting 5 is manufactured as a long object by forming the plate member 52 in a long length in the extending direction of the steel frame beam 2, but the support metal fitting 5 is not limited to this. For example, may be produced as a piece having a width dimension of the leg portion 51, and the pieces may be arranged in a scattered manner. Further, the wall surface portion 31 is composed of a calcium silicate plate as a base material, but the present invention is not limited to this, and the wall surface portion 31 may be configured in the same manner as the outer wall panel 3.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示した実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。 Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. It is possible to make various modifications and modifications to the illustrated embodiment within the same range as the present invention or within the same range.

１ 陸屋根
１１ 最も端側の屋根材
１２ 他の屋根材
２ 鉄骨梁
３ 外壁パネル（外壁材）
５ 支持金具
５１ 脚部
５２ 板部材
５３ 嵩上げ部
６ 外気通路
６０ 空間部
６１ 外気取入口
６２ 小屋裏換気路
６３ 耐火筒部
８１ 軒樋
８２ 軒先部
８３ 換気装置 1 Flat roof 11 Roofing material on the farthest side 12 Other roofing material 2 Steel beam 3 Outer wall panel (outer wall material)
5 Support bracket 51 Leg 52 Plate member 53 Raised part 6 Outside air passage 60 Space part 61 Outside air intake 62 Hut back ventilation path 63 Fireproof cylinder part 81 Eaves gutter 82 Eaves tip 83 Ventilation device

Claims (5)

鉄骨梁と、この鉄骨梁に固定され、陸屋根の屋根材を支持する支持金具と、外壁材の上方側で上記支持金具により形成される外気通路と、上記外壁材の上端よりも上側に位置する壁面部に形成された外気取入口と、上記鉄骨梁に形成された開口を通り上記外気通路に通じる小屋裏換気路と、上記鉄骨梁および上記開口を被覆する耐火材とを備えており、
上記陸屋根の最も端側の屋根材は当該最も端側の屋根材の隣の屋内側の屋根材よりも薄肉で上記隣の屋内側の屋根材と上面が略面一に設けられることで下側に空間部が形成されており、この空間部が上記外気通路の上側部を構成しており、
上記陸屋根の最も端側の屋根材および上記隣の屋内側の屋根材はコンクリートを素材とする屋根材であり、
上記耐火材は、上記鉄骨梁よりも屋外側に位置する上記隣の屋内側の屋根材の下面側にも設けられることを特徴とする陸屋根換気構造。 It is located above the steel beam, the support metal fittings fixed to the steel frame beam and supporting the roofing material of the flat roof, the outside air passage formed by the support metal fittings on the upper side of the outer wall material, and the upper end of the outer wall material. It is provided with an outside air intake formed on a wall surface portion, a hut back ventilation path leading to the outside air passage through an opening formed in the steel frame beam, and a fireproof material covering the steel frame beam and the opening.
The roofing material on the farthest side of the flat roof is thinner than the roofing material on the indoor side next to the roofing material on the farthest side, and the roofing material on the indoor side next to the roofing material and the upper surface are provided substantially flush with each other on the lower side. A space portion is formed in the roof, and this space portion constitutes the upper portion of the outside air passage.
The roofing material on the farthest end of the flat roof and the roofing material on the indoor side next to it are made of concrete.
The flat roof ventilation structure is characterized in that the refractory material is also provided on the lower surface side of the roofing material on the indoor side next to the steel frame beam located on the outdoor side. 鉄骨梁と、この鉄骨梁に固定され、陸屋根の屋根材を支持する支持金具と、外壁材の上方側で上記支持金具により形成される外気通路と、上記外壁材の上端よりも上側に位置する壁面部に形成された外気取入口と、上記鉄骨梁に形成された開口を通り上記外気通路に通じる小屋裏換気路と、上記鉄骨梁および上記開口を被覆する耐火材とを備えており、
上記陸屋根の最も端側の屋根材は当該最も端側の屋根材の隣の屋内側の屋根材よりも薄肉で上記隣の屋内側の屋根材と上面が略面一に設けられることで下側に空間部が形成されており、この空間部が上記外気通路の上側部を構成しており、
上記陸屋根の最も端側の屋根材および上記隣の屋内側の屋根材はコンクリートを素材とする屋根材であり、
上記支持金具は、上記陸屋根の最も端側の屋根材を、上記鉄骨梁よりも屋外側となる位置で支持し且つ、上記隣の屋内側の屋根材を、上記鉄骨梁上で支持することを特徴とする陸屋根換気構造。 It is located above the steel beam, the support metal fittings fixed to the steel frame beam and supporting the roofing material of the flat roof, the outside air passage formed by the support metal fittings on the upper side of the outer wall material, and the upper end of the outer wall material. It is provided with an outside air intake formed on a wall surface portion, a hut back ventilation path leading to the outside air passage through an opening formed in the steel frame beam, and a fireproof material covering the steel frame beam and the opening.
The roofing material on the farthest side of the flat roof is thinner than the roofing material on the indoor side next to the roofing material on the farthest side, and the roofing material on the indoor side next to the roofing material and the upper surface are provided substantially flush with each other on the lower side. A space portion is formed in the roof, and this space portion constitutes the upper portion of the outside air passage.
The roofing material on the farthest end of the flat roof and the roofing material on the indoor side next to it are made of concrete.
The support metal fittings support the roofing material on the most end side of the flat roof at a position on the outdoor side of the steel frame beam, and support the roofing material on the indoor side next to the steel frame beam on the steel frame beam. The characteristic flat roof ventilation structure. 請求項１または請求項２に記載の陸屋根換気構造において、上記壁面部に樋が設けられていることを特徴とする陸屋根換気構造。 The flat roof ventilation structure according to claim 1 or 2, wherein a gutter is provided on the wall surface portion. 請求項３に記載の陸屋根換気構造において、上記樋よりも上側に上記外気取入口が形成されていることを特徴とする陸屋根換気構造。 The flat roof ventilation structure according to claim 3, wherein the outside air intake is formed above the gutter. 請求項３または請求項４に記載の陸屋根換気構造において、上記樋よりも上側に軒先部が形成されており、この軒先部と上記樋との間に、上記外気取入口に通じる換気装置が設けられていることを特徴とする陸屋根換気構造。 In the flat roof ventilation structure according to claim 3 or 4, an eaves portion is formed above the gutter, and a ventilation device leading to the outside air intake is provided between the eaves portion and the gutter. A flat roof ventilation structure characterized by being guttered.
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