JP2012087618A - Ventilation ridge structure and ventilation roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation ridge structure capable of providing sufficient ventilation of a ridge by a simple structure.SOLUTION: A ventilation ridge structure includes: a pair of sheathing roof boards 100 for partitioning indoor and outdoor sides; a ventilation slit 101 provided in a location in which the pair of sheathing roof boards 100 face each other; moisture-permeable roofing 102 provided on the upper portion of the sheathing roof board 100 and having waterproof properties and the like; a tile 103 provided on a top surface of the moisture permeable roofing 102; a ventilation member 110 elongated along the ventilation slit 101 on an upper surface of the tile 103 and formed to enable ventilation from one lateral surface to the other lateral surface; and a tile-stacked ridge 120 provided astride the ventilation slit 101 in such a manner as to cover a top surface of the ventilation member 110.

Description

  The present invention relates to a ventilation ridge structure and a ventilation roof structure in a ridge portion or a roof of a house or the like, and particularly relates to a structure capable of improving ventilation efficiency.

  A tile roof structure is used for a roof of a house, and various techniques are used for the tile roof structure.

  In the ridge of a house, in order to prevent rainwater and the like from entering the house, a wet construction method in which the gap between the corner tile and the rafter is solidified using soil, namba, plaster or the like has been conventionally used. However, in the wet method, it is difficult to ventilate indoors, and in recent years, a ridge structure that improves ventilation efficiency by providing the ridge with an airflow passage ventilation function is being adopted (for example, Patent Documents). 1 and 2).

  In house keraba, etc., in a snowy area, etc., a method to improve load resistance by using a metallic frame for the underframe under the eaves so that keraba can withstand the weight of snow, draining function such as rainwater The method etc. which make manufacture, construction, etc. easy are employ | adopted by using also for a keraba member (for example, refer patent document 3, 4).

Japanese Patent No. 2901180 Japanese Patent No. 3583111 JP 2001-207580 A JP 2001-164718 A

  The building structure having the ventilation function described above has the following problems. That is, the ventilation path from the indoor to the outdoor is complicated, and sufficient ventilation cannot be performed. Moreover, since it is a complicated structure which used many metal fittings, there also existed a problem that the cost of manufacture, construction, etc. became high.

  The above-described keraba structure has the following problems. That is, even if it was possible to have a load-bearing and draining function, ventilation between the field plate and the roof member could not be taken in Keraba.

  Therefore, an object of the present invention is to provide a ventilated roof structure that can perform sufficient ventilation to a roof of a house or the like with a simple structure and can further reduce manufacturing and construction costs.

  In order to solve the problems and achieve the object, the ventilation building structure and the ventilation roof structure of the present invention are configured as follows.

  A pair of field boards arranged facing each other upward, a pair of roofing materials arranged on the field board, and provided along the boundary parts on the pair of roofing materials, air flow A pair of ventilation members in which a lower step portion having a member and an upper step portion having a headboard are arranged in a stacked manner; a ridge package provided across the boundary portion; and disposed on the upper surface of the pair of ventilation members; To the upper stage headboard, the lower stage part, the roof material, a fixing member that penetrates and fixes to the base plate side, and a waterproof sheet provided on the base plate. .

  A field plate, a roof material disposed on the field plate, an air circulation part disposed between the field plate and the roof material, and an eaves part of the field plate, the air circulation part, An air circulation member that circulates air with the outside, and a fixing member that penetrates and fixes from the roof material side to the air circulation member and the base plate side.

  A field plate, a roof material disposed on the field plate, an air circulation part disposed between the field plate and the roof material, and an eaves part of the field plate, the air circulation part, An air circulation member that circulates air to and from the outside, a climbing member provided on the upper surface of the air circulation member, and a fixing member that penetrates and fixes from the climbing member side to the air circulation member and the base plate side It is characterized by having.

  A pair of field boards arranged opposite each other with their boundary portions facing upward, a pair of roofing materials arranged on the field plate, and water dripped from above the boundary portions, straddling the boundary portions A draining member for draining the upper side of the field plate, a ridge wrap arranged across the boundary, and an air flow member extending along the boundary on the side end side of the lower surface of the ridge, A net-like body extending along the boundary portion on the center side of the lower surface of the wing parcel, and a waterproof sheet provided between the wing parcel, the air ventilation member, and the net-like body. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, sufficient ventilation | gas_flowing can be performed to the roof of a house with a simple structure, and also it becomes possible to reduce manufacturing and construction cost.

Sectional drawing which shows the flat wing which concerns on the 1st Embodiment of this invention. The perspective view which shows the ventilation member used for the same flat wing. The perspective view which shows the building parcel used for the same flat building. Explanatory drawing which shows the side of the same flat building. Sectional drawing which shows the flat building of the roof structure which concerns on the 2nd Embodiment of this invention. Sectional drawing which shows the eaves part of the same roof structure. Sectional drawing which shows the keraba of the roof structure. Sectional drawing which shows the flat wing which concerns on the 3rd Embodiment of this invention. Sectional drawing which shows the flat wing which concerns on the 4th Embodiment of this invention. Sectional drawing which shows the big ridge which concerns on the 5th Embodiment of this invention.

  FIG. 1 is a sectional view showing a flat building 10 according to the first embodiment of the present invention, FIG. 2 is a perspective view showing a ventilation member 110 used in the flat building 10, and FIG. FIG. 4 is an explanatory view showing a side surface of the flat building 10. In FIG. 1, F indicates an air flow passage.

  The flat wing 10 includes a pair of field boards 100 and 100 that partition indoors and outdoors, a ventilation slit 101 that is formed by providing a space at a position where the pair of field boards 100 and 100 face each other, For example, a moisture permeable roofing 102 provided at the upper portion of the water-proofing 100, a roof tile 103 provided on the upper surface of the moisture permeable roofing 102, for example, a roof member, and an upper surface of the roof tile 103 extending along the ventilation slit 101. The ventilation member 110 is provided and is formed so as to allow ventilation from one side surface to the other. The building member 120 covers the upper surface of the ventilation member 110 and is provided across the ventilation slit 101.

  The ventilation member 110 is fixed to a rafter (not shown) by penetrating the base plate 100 with the nail 104 by, for example, nailing from an upper surface of the cap 114 to be described later. The ridge wrap 120 is fixed to the ventilation member 110 by nailing from the side surface of the ridge wrap 120 to the headboard 114 with, for example, the nail 104.

  As shown in FIG. 2, the ventilation member 110 has a double structure, and the lower step portion 110a of the double structure has, for example, frustoconical peaks arranged in a staggered pattern with respect to the air flow direction. It is formed by a hollow body 111 having a conical composite body 113 formed by adhering the crests of the face materials 112. Moreover, the upper stage part 110b is formed by arranging the headboard 114 and the hollow body 111 made of, for example, wood alternately. The lower step portion 110a and the upper step portion 110b are fixed with, for example, an adhesive. As shown in FIG. 2, the headboard 114 and the hollow body 111 may have the same width, but the headboard 114 may be formed wider than the hollow body 111 as shown in FIG. This is because, by increasing the width of the headboard 114 and increasing the area of the building parcel 120 in contact with the headboard 114, it is possible to improve the strength against the load from above the mantle 120.

  As shown in FIG. 3, the ridge wrap 120 includes a mountain-shaped cover portion 121 that drains rainwater or the like dripped from above to the side, that is, the top surface of the roof tile 103, and a headboard that is provided on the end surface of the cover portion 121 and extends in the vertical direction. 114 is provided in the side cover 122 adjacent to 114, the circulation hole 123 provided on the end surface of the cover part 121 and in the portion adjacent to the hollow body 111 of the upper step part 110 b, and the side cover 122. For example, a draining plate 124 extending parallel to the base plate 100 from a position adjacent to the lower step portion 110a and the upper step portion 110b of the ventilation member 110 is provided.

  In the flat building 10 configured in this way, an air flow passage F is formed. First, as shown in the air flow path F, the indoor air (lower part of the field board 100) passes through the ventilation slit 101 and moves to the space below the building parcel 120. Then, outside air passes through the hollow body 111 from one side of the building parcel 120, passes through the other hollow body 111 together with the air below the building parcel 120, and is discharged to the outside.

  Further, as shown in FIG. 4, rainwater or the like does not flow into the indoor space from the headboard 114 by the side cover 122 and the draining plate 124 provided in the building 120. Further, since the ventilation member 110 (hollow body 111) is provided in parallel with the field plate 100, rainwater or the like from obliquely above does not enter the hollow body 111, and thus rainwater does not flow indoors.

  For example, even if rainwater on the roof tile 103 is rolled up by strong winds or the like, because the conical composite 113 is arranged in a staggered pattern in the direction of the air flow path F of the hollow body 111, Although air flows, rainwater or the like does not flow indoors due to collision and adhesion to the cone complex 113 (since the cone complex 113 becomes a resistance).

  Furthermore, by providing the flow holes 123, more air flow passages F can be obtained. For this reason, it is possible to reduce manufacturing and construction costs while improving ventilation efficiency by providing an air flow passage F that is discharged indoors with a simple structure while maintaining basic functions such as a water stop effect. it can.

  In addition to this, by adjusting the width (area) of the headboard 114, the strength (load resistance, etc.) from above the building parcel 120 can be adjusted. In this way, the strength can be easily adjusted by changing the width of the headboard 114, for example, securing the scaffolding in the building parcel 120 according to the size of the scaffolding at the time of construction, and the usage situation such as the amount of snow accumulation in the area of use. Construction cost can be reduced.

  Further, by nailing the ventilation member 110 to the headboard 114 with the nail 104 or the like, the nail 104 can penetrate the base plate 100 and be firmly fixed to the rafter. Since the ridge wrapper 120 is fixed to the headboard 114 that is firmly fixed by the nail 104 or the like, the ridge wrapper 120 can be firmly fixed. Here, by nailing the side cover 122 of the building parcel 120, it is possible to prevent rainwater from entering the headboard 114 from the nailing portion. In order to further prevent the intrusion of rainwater from the location where the nail 104 is nailed, for example, a waterproof seal may be attached to the dish portion of the nail 104.

  As described above, according to the flat building 10 according to the present embodiment, the air flow passage F through which indoor air is discharged outdoors with a simple structure while maintaining basic functions such as a water stop effect. Since it can be provided, the manufacturing and construction costs can be reduced, and the ventilation efficiency can be improved.

  FIG. 5 is a cross-sectional view showing a flat building 10A of the roof structure 1 according to the second embodiment of the present invention, FIG. 6 is a cross-sectional view showing the eaves portion 11 of the roof structure 1, and FIG. It is sectional drawing which shows the keraba 12. 5 to 7, the same functional parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The roof structure 1 includes a moisture-permeable roofing 102 provided on top of the pair of base plates 100, 100, a hollow body 111 provided at each end on the moisture-permeable roofing 102, and a hollow on the moisture-permeable roofing 102. A net-like band 115 provided between the body 111 and the hollow body 111, a roof tile 103 provided on the top of the hollow body 111 and the net-like band 115, and a top surface of the roof tile 103 provided across the ventilation slit 101. 10 A of flat ridges, the eaves edge 11 provided along the roof lower end, and the keraba 12 provided along the rafter 105 which is a roof side edge.

  The flat building 10 </ b> A is provided with the roof tile 103 provided on the hollow body 111 and the mesh belt 115, the ventilation member 110 that is the upper surface of the roof tile 103 and extends along the ventilation slit 101, and the upper surface of the ventilation member 110. And a parcel 120.

  The eaves 11 is provided between the hollow body 111 and the moisture-permeable roofing 102 along the lower end of the roof. One of the eaves 11 has a shape that covers the side surface of the field plate 100 and the other has a shape having a barb 131 at the end. The eaves edge drainer 130 is provided, and the roof tile 103 and the eaves edge drainer 130 are fixed to the field board 100 or the like by nailing with, for example, a nail 104 or the like.

  The keraba 12 is a roof side end (wife side end) and covers the climbing tree 140 disposed on the upper surface of the hollow body 111 provided along the rafter 105, the climbing tree 140 and the field board 100, and Provided between the tile 103 and the hollow body 111 and the net-like band 115, and provided with a keraba drainer 141 having a barb 142 at the end provided between the tile 103 and the hollow body 111 and the net-like band 115. . The climbing tree 140 is fixed to the base plate 100 by nailing with the nail 104 or the like, and the keraba drainer 141 is fixed to the climbing tree 140 by nailing with the nail 104 or the like.

  According to the roof structure 1 configured as described above, as shown in the air flow path F, first, air between the indoor and moisture-permeable roofing 102 (field plate 100) and the roof tile 103 passes through the ventilation slit 101. Then, it moves to the space below the building parcel 120. Similarly, the eaves 11 passes between the moisture-permeable roofing 102 and the roof tile 103, passes through the ventilation slit, and moves to the space below the wing 120. Then, external air passes through the hollow body 111 from one side of the building package 120, passes through the other hollow body 111 together with the air of the building package 120, and is discharged to the outside.

  Further, the air between the moisture permeable roofing 102 and the roof tile 103 is discharged to the outside from the hollow body 111 provided in the keraba 12 as in the air flow passage F shown in FIG. In addition, although air moved from the eaves 11 to the ventilation slit 101, the air may move from the ventilation slit 101 to the eaves 11 and the air may be discharged from the eaves 11 to the outside. Similarly, air may move from the outside to the ventilation slit 101 through the hollow body 111 provided in the keraba 12.

  Since the field plate 100 at the end of the eaves 11 is covered with the eaves drainer 130, the field plate 100 is not exposed to rainwater, and therefore rainwater enters between the eaves drainer 130 and the field plate 100. Nor. Similarly, since the field board 100 at the end of the keraba 12 is covered with the keraba drainer 141, the field board 100 is not exposed to rainwater, and rainwater does not enter between the keraba drainer 141 and the field board 100. .

  In addition, by providing the return 131 and 142 for the eaves drainer 130 and the keraba drainer 141, respectively, even if rainwater or the like has entered, rainwater can be blocked by the return 131 or 142, so that rainwater can flow into the base plate 100. There is no intrusion.

  By providing a space between the moisture permeable roofing 102 (field plate 100) and the roof tile 103, the basic function such as a water stop effect is maintained, and the structure between the field plate 100 and the roof roof 103 is simplified. Since the air flow path F discharged indoors can be provided, the ventilation efficiency can be further improved while reducing the manufacturing and construction costs.

  Further, by nailing the eaves edge drainer 130, the keraba drainer 141, and the climbing tree 140 with the nail 104 or the like, the nail 104 can be penetrated through the field board 100 and firmly fixed. Here, by nailing the side surface of the keraba drainer 141, rainwater can be prevented from entering the headboard 114 from the nailing portion. In order to further prevent the intrusion of rainwater from the location where the nail 104 is nailed, for example, a waterproof seal may be attached to the dish portion of the nail 104.

  As described above, according to the roof structure 1 according to the present embodiment, while maintaining the basic functions such as the water stop effect, the indoor and indoor air of the field board 100 and the roof tile 103 are outdoors with a simple structure. Since the air flow passage F discharged to the can be provided, the manufacturing and construction costs can be reduced, and the ventilation efficiency can be improved.

  FIG. 8 is a cross-sectional view showing a flat building 10B according to the third embodiment of the present invention. In FIG. 8, the same functional parts as those in FIGS.

  The flat ridge 10B is provided with a ventilation slit 101 provided in the pair of base plates 100, 100, a moisture-permeable roofing 102 provided on the top of the field plates 100, 100, and the moisture-permeable roofing 102 on the ventilation slit 101. A drainage member 150 formed so that water dropped from above can be drained to the side, that is, the moisture-permeable roofing 102 on the top surface of the base plate 100, 100, and the air can be circulated from the side surface; A plurality of tiles 103 provided on the upper surface of the wet roofing 102 and in the vicinity of the draining member 150, a ventilation member 160 provided on the upper surface of the tile 103 and straddling the draining member 150, and an upper surface of the roof tile 103 and the ventilation member 160 and a ridge parcel 120 provided across 160.

  The ventilation member 160 includes a hollow body 111 provided on the roof tile 103 as a pair with respect to the ventilation slit 101, a moisture-permeable roofing 102 provided so as to cover the upper surface of the hollow body 111 and the draining member 150, and the transparent body. A hollow band 111 is provided on the lower surface of the wet roofing 102 and provided between the hollow body 111.

  In the flat building 10B configured in this way, an air flow passage F is formed. First, as shown in the air flow passage F, indoor air passes through the ventilation slit 101 and moves from the side surface of the drainage member 150 to the space below the ridge package 120. Then, external air passes through the hollow body 111 from one side of the building package 120, passes through the other hollow body 111 together with the air of the building package 120, and is discharged to the outside.

  Further, rainwater or the like does not flow into the indoor space by the side cover 122 and the draining plate 124 provided in the building parcel 120. Moreover, since the hollow body 111 exposed to the outside by the circulation hole 123 is provided in parallel with the field plate 100, rainwater or the like from obliquely above does not flow indoors.

  As described above, according to the flat building 10B according to the present embodiment, the air in the space between the indoor and the field board 100 and the roof tile 103 can be maintained with a simple structure while maintaining basic functions such as a water stop effect. Since the air flow path F discharged to the outdoors can be provided, the manufacturing and construction costs can be reduced, and the ventilation efficiency can be improved.

  FIG. 9 is a sectional view showing a flat building 10C according to the fourth embodiment of the present invention. 9, the same reference numerals are given to the same functional portions as those in FIGS. 1 to 4, and the detailed description thereof will be omitted.

  The flat building 10 </ b> C is on the ventilation slit 101 formed on the pair of field boards 100, 100, the moisture permeable roofing 102 provided on the top of the field boards 100, 100, and the moisture permeable roofing 102. A draining member 150 provided across the slit 101, a roof tile 103 provided on the moisture permeable roofing 102, and a face door member provided between the moisture permeable roofing 102 and the roof tile 103 from the side of the draining member 150. 151, a ventilation member 160 provided on the top surface of the roof tile 103 and across the draining member 150, and a crown roof tile 170 provided so as to cover the ventilation member 160.

  In the flat building 10C configured in this way, an air flow passage F is formed. First, as shown in the air flow path F, the air in the room (below the base plate 100) passes through the ventilation slit 101 and moves from the side surface of the draining member 150 to the space below the ventilation member 160. Then, external air passes through the hollow body 111 from one side of the ventilation member 160, passes through the other hollow body 111 together with the air on the lower surface of the ventilation member 160, and is discharged to the outside.

  Moreover, rainwater from obliquely above does not flow indoors due to the crown roof 170 and the hollow body 111. Even if rainwater flows, rainwater is discharged between the roof tile 103 and the moisture-permeable roofing 102 by the face door member 151.

  As described above, according to the flat building 10C according to the present embodiment, the air in the space between the indoor and the field board 100 and the roof tile 103 can be maintained with a simple structure while maintaining the basic functions such as the water stop effect. Since the air flow path F discharged to the outdoors can be provided, the manufacturing and construction costs can be reduced, and the ventilation efficiency can be improved.

  FIG. 10 is a sectional view showing a large building 13 according to the fifth embodiment of the present invention. 10, the same functional parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The large ridge 13 includes a ventilation slit 101 provided on the pair of base plates 100, 100, a moisture-permeable roofing 102 provided on the top of the field plates 100, 100, and a draining member 150 provided on the moisture-permeable roofing 102. A plurality of flow plates 180 that are arranged on the upper surface of the moisture-permeable roofing 102 and that are arranged in parallel to the oblique angle of the base plate 100 from the vicinity of the draining member 150, and are formed on the upper surface of the flow plate 180 in the horizontal direction. And a plurality of rafter support fittings 183 are arranged at a predetermined interval across the ventilation slit 101, and the plurality of rafter support fittings 183 are arranged across the ventilation slit 101. A rafter 184 attached over the air, and a ventilation member 160 provided on the top surface of the roof tile 182 across the draining member 150 and the rafter 183, A top of the tiles 182 and a Kanmurikawara 170 provided to cover the vent member 160.

  In addition, you may provide the groove | channel which becomes the same angle as the bevel angle of the field board 100 when the board 181 is arrange | positioned in the field board 100 in the lower surface of the board 181 without providing the flow board 180. FIG.

  In the large ridge 13 configured as described above, an air flow passage F is formed. First, as shown in the air flow path F, the air in the room (below the base plate 100) passes through the ventilation slit 101 and moves from the side surface of the draining member 150 to the space around the rafter 184. Further, the air in the space of the pier 181, the roof tile 182, and the field plate 100 can be moved to the space around the rafter 105 by the distribution plate 180. Then, external air passes through the hollow body 111 from one side of the ventilation member 150, passes through the other hollow body 111 together with the air around the rafter 105, and is discharged to the outside.

  Moreover, rainwater does not flow indoors due to the crown tile 170 and the hollow body 111. Even if rainwater enters the rafter 184 from the hollow body 111, the rainwater is discharged from the draining member 150 to the moisture-permeable roofing 102 and discharged from between the flow plate 180 and the flow plate 180 to the outside. .

  For this reason, by providing more airflow passages F with a simple structure while maintaining basic functions such as a water stop effect, manufacturing and construction costs can be reduced while improving ventilation efficiency.

  As described above, according to the large ridge 13 according to the present embodiment, the air in the space between the indoor and the field board 100 and the roof tile 182 can be maintained with a simple structure while maintaining basic functions such as a water stop effect. Since the air flow path F discharged to the outdoors can be provided, the manufacturing and construction costs can be reduced, and the ventilation efficiency can be improved.

  The present invention is not limited to the above embodiment. For example, in the above-described example, the moisture-permeable roofing 102 is described as being used, but this can also be applied using an aluminum sheet having moisture-permeable and heat-insulating properties. Thereby, it becomes possible to have high heat insulation. Moreover, although the net band 115 has been described as being used, the present invention can also be applied by using the hollow body 111 or the like where necessary (for example, the roof tile 103 is disposed and fixed). Further, the present invention can also be applied using another roof member instead of the roof tile 103 and the roof tile 182. Of course, various modifications can be made without departing from the scope of the present invention.

  10, 10A to 10C: flat building, 13: large building, 100: field board, 101 ... ventilation slit, 102 ... moisture-permeable roofing, 103 ... tile, 104 ... nail, 110 ... ventilation member, 111 ... hollow body, 114 ... Kasagi, 120 ... Wrap, 122 ... Side cover, 124 ... Horizontal drainage board, F ... Air flow passage.

Claims (11)

A pair of field boards arranged opposite each other with their boundary portions facing upward;
A pair of roofing materials arranged on this field plate,
A pair of ventilation members provided on the pair of roofing materials along the boundary portion, in which a lower step portion having an air circulation member and an upper step portion having a coping are arranged and stacked;
A ridge wrap provided across the boundary and disposed on the upper surface of the pair of ventilation members;
A fixing member that penetrates and fixes from the ridge wrap side to the upper stage headboard, the lower stage part, the roof material, and the base plate side,
A ventilation ridge structure comprising a waterproof sheet provided on the field plate. The ward package has a side cover portion covering the side surface of the support member,
The ventilation building structure according to claim 1, further comprising a side surface fixing member that penetrates and fixes from the cover side to the headboard side of the upper stage. In the upper stage, the headboard and the air circulation member are alternately arranged along the boundary portion,
The ventilation ridge structure according to claim 1, wherein the side cover portion is opened in the air circulation member.   The ventilation building structure according to claim 1, wherein an air circulation part that circulates air to the outside is formed between the field plate and the roofing material.   The ventilation building structure according to claim 1, wherein the air circulation member is a hollow body in which columns extending in a stacking direction of the upper and lower steps are arranged in a staggered manner. With a field plate,
Roofing material placed on this field plate,
An air circulation part disposed between the base plate and the roof material;
An air circulation member that is provided at the eaves of the field plate, and that circulates air between the air circulation part and the outside;
A ventilated roof structure comprising: a fixing member that penetrates and fixes from the roof material side to the air circulation member and the base plate side.   The ventilated roof structure according to claim 5, wherein the air circulation member is a hollow body in which pillars extending in the stacking direction of the upper and lower steps are arranged in a staggered manner. With a field plate,
Roofing material placed on this field plate,
An air circulation part disposed between the base plate and the roof material;
An air circulation member that is provided at the eaves of the field plate, and that circulates air between the air circulation part and the outside;
A climbing member provided on the upper surface of the air circulation member,
A ventilated roof structure comprising: the air circulation member from the climbing member side; and a fixing member that penetrates and fixes to the base plate side.   The ventilated roof structure according to claim 8, wherein the air circulation member is a hollow body in which pillars extending in a stacking direction of the upper and lower steps are arranged in a staggered manner. A pair of field boards arranged opposite each other with their boundary portions facing upward;
A pair of roofing materials arranged on this field plate,
A draining member that is disposed across the boundary part and drains the water dripping from above the boundary part to the upper side of the base plate,
A wardrobe placed across the boundary,
An air circulation member extending along the boundary on the side end side of the lower surface of the wing,
A net extending along the boundary on the center side of the lower surface of the wing,
A ventilation wing structure comprising a waterproof sheet provided between the ridge wrap, the air ventilation member, and the net-like body.   The ventilation building structure according to claim 10, wherein the air circulation member is a hollow body in which columns extending in the stacking direction of the upper and lower steps are arranged in a staggered manner.

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