JP4185436B2 - Drainage structure at the roof eaves - Google Patents

Description

  The present invention relates to a drainage structure for a roof eaves portion in which a eaves portion of a roof panel is joined to a parapet where a parapet is erected on an upper end portion of a building body.

In a building such as a house, for example, a technique described in Patent Document 1 is known as an example of a drainage structure of a balcony. In this technique, a slope is provided on the top surface of the balcony to provide a water gradient on the balcony, and a drain outlet is provided at the tip of the balcony floor. The gradient floor portion is formed by arranging a plurality of gradient materials having an inclined upper surface at predetermined intervals and attaching a surface material such as a plywood to the inclined upper surfaces of the gradient materials.
In the drainage structure of the balcony as described above, rainwater that has fallen on the balcony flows into the drainage port through the upper surface of the sloped floor, and is drained to the outside by the dredging connected to the drainage port. Yes.
JP 2002-371655 A

By the way, when houses are densely packed and the site area is small as in an urban area or the like, in a building having a normal gable roof, there is a possibility that the eaves of the roof may interfere with the adjacent land or the road. Therefore, the above-described problems caused by the gable roof can be solved by making the roof of the building a flat roof and standing a parapet on the building body.
In a wooden building, when a flat roof is formed, for example, a flat roof is provided horizontally at the upper end of the building body, but if the top surface of the roof is horizontal, the drainage will deteriorate, so a slight water gradient should be added to the flat roof. desirable. In this case, it is possible to add a water gradient to the land roof by installing the sloped floor portion described in Patent Document 1 on the upper surface of the land roof.
However, in this case, since a sloped floor portion is required in addition to the flat roof, the number of parts increases by the amount of the sloped floor portion, and the work is time-consuming.

Therefore, if a parapet is erected at the upper end of the building main body and the eaves of the roof is joined to this parapet, a sloped floor portion is unnecessary and construction is easy.
However, since the upper surface of the roof has a water gradient, rainwater collects at the joint between the eaves portion of the roof and the parapet, making it difficult to drain the rainwater. In other words, since there are nails, reinforcing materials, and the like for joining the eaves of the roof to the parapet at the joint, it is difficult to install drainage dredges avoiding these.

  The present invention has been made in view of the above circumstances, and there is no need for parts such as a sloped floor part, the number of parts is small, construction is easy, and drainage of the roof eaves can be reliably drained at the eaves. The challenge is to provide a structure.

In order to solve the above-described problem, according to the invention described in claim 1, for example, as shown in FIGS. 1 and 2, a parapet 1 is erected on the upper end portion of the outer wall of the building body 2, and the roof 15 The drainage structure of the roof eaves part formed by joining the eaves part of
On the upper surface 15a of the eaves part of the roof 15, a horizontal surface forming member 20 extending along the eaves part is fixed so that the upper surface 20a is inclined horizontally or slightly inward,
A flange 21 is provided at a portion spaced from the distal end of the horizontal plane forming member 20 by a predetermined distance to the proximal end side with its upper end opening opened on the upper surface 20a of the horizontal plane forming member 20,
A ceiling 32 is provided below the roof 15, and the fence 21 is piped in an attic space 34 between the ceiling 32 and the roof 15.
The flange 21 is bent in the lateral direction, further extended, penetrated through the outer wall, and is piped outside .
A support beam 30 is fixed to the lower end of the parapet 1, and the support beam 30 is also fixed to the upper end of the outer wall.
The lower surface of the eaves part of the roof 15 is supported by the support beam 30,
The ridge 21 is arranged on the ridge side of the roof 15 from the support beam 30 .

  Here, to slightly incline the upper surface of the horizontal plane forming member means to slightly incline downward in the direction from the eaves side to the ridge side of the roof 15 as shown in FIG. 3, for example. For example, it is desirable to incline so that the water gradient of the upper surface 40a of the horizontal plane forming member 40 is a slight inclination of about 1/12 or less.

According to the first aspect of the present invention, since the horizontal surface forming member 20 is fixed to the upper surface 15a of the eaves portion of the roof 15 so that the upper surface 20a is inclined horizontally or slightly inward, the eaves of the roof 15 It is possible to prevent rainwater from accumulating at the joint between the part and the parapet 1. Rainwater that has fallen on the roof 15 can be drained by a gutter 21 provided on the horizontal plane forming member 20.
And since the eaves 21 are provided in the site | part spaced apart from the front-end | tip of the horizontal surface formation member 20 to the base end side by the predetermined distance, the nail for joining the eaves 21 and the eaves part of the roof 15 to the parapet 1 is carried out. (Screw nail 12) and reinforcing materials (joint beam 18 and support beam 30) can be avoided and installed easily.
Therefore, components such as a sloped floor portion are unnecessary, the number of components is small, construction is easy, and drainage can be reliably performed at the eaves portion of the roof 15.
Further, rainwater flowing toward the eaves side of the roof 2 can be easily drained through the fence 21 piped in the attic space 34.
Further, since the lower surface of the eaves portion of the roof 15 is supported by the support beam 30 fixed to the parapet 1, the eave portion of the roof 15 is reliably supported by the parapet 1 erected on the upper end of the building body 2. it can.

Invention of Claim 2 is the drainage structure of the roof eaves part of Claim 1,
The horizontal plane forming member 20 is formed in a triangular shape having a transverse cross section, and the angle formed between the upper surface 20a and the inclined surface 20b is equal to the angle formed between the upper surface 15a of the roof 15 and the horizontal plane.

  According to the second aspect of the present invention, since the upper surface 20a of the horizontal surface forming member 20 becomes horizontal by bringing the slope 20b of the horizontal surface forming member 20 into contact with the upper surface 15a of the roof 15, the upper surface of the eaves portion of the roof 15 The horizontal surface forming member 20 can be fixed to 15a such that the upper surface 20a thereof is easily and reliably horizontal.

Invention of Claim 3 is the drainage structure of the roof eaves part of Claim 1 or 2,
A waterproof sheet 25 is attached to the upper surface 15 a of the roof 15 so as to cover the upper surface 20 a of the horizontal plane forming member 20, and the tip of the waterproof sheet 25 is raised from the tip of the horizontal plane forming member 20. And extending to the upper end of the parapet 1.

According to the invention described in claim 3, the waterproof sheet 25 attached to the upper surface 15 a of the roof 15 covers the upper surface 20 a of the horizontal surface forming member 20, and the distal end portion of the waterproof sheet 25 is the horizontal surface forming member 20. Since it rises from the tip and extends to the upper end of the parapet 1, the joint between the eaves of the roof 15 and the parapet 1 can be reliably waterproofed.

According to the present invention, the dredging that drains rainwater that has fallen on the roof is provided at a site that is spaced a predetermined distance from the tip of the horizontal plane forming member fixed to the upper surface of the eaves of the roof.竪 樋 can be easily installed avoiding nails and reinforcements for joining the eaves of the roof to the parapet. Therefore, parts such as a sloped floor are not required, the number of parts is small, construction is easy, and drainage can be reliably performed at the eaves part of the roof.
In addition, the horizontal plane forming member is formed in a triangular shape having a transverse cross section, and the angle formed between the upper surface and the slope is equal to the angle formed between the upper surface of the roof and the horizontal plane. By abutting, the upper surface of the horizontal plane forming member becomes horizontal. Therefore, the horizontal surface forming member can be fixed to the upper surface of the eaves portion of the roof so that the upper surface is easily and reliably horizontal.

Furthermore, since the prevention sheet covers the upper surface of the horizontal plane forming member and the tip of the waterproof sheet is raised from the tip of the horizontal plane forming member and extends to the upper end of the parapet, the roof eaves and the parapet The joint can be waterproofed reliably.
In addition, since the lower surface of the eaves portion of the roof is supported by the support girder fixed to the parapet, the eave portion of the roof can be reliably supported by the parapet.
Moreover, since the fence is piped in the attic space between the ceiling and the roof provided under the roof, the rain water flowing to the eaves side of the roof can be easily drained through the fence.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a parapet. The parapet 1 is erected on the outer wall 3 of the building body 2. The building body 2 is constructed by, for example, a well-known panel method, and the outer wall 3 includes a wall panel 4 and an exterior material 6 attached to the surface side of the wall panel 4 via a trunk edge 5. Yes. A gypsum board 7 is attached to the back side of the wall panel 4.

The parapet 1 includes a wall panel 8 and an exterior material 6 attached to the surface side of the wall panel 8 via a trunk edge 5. The wall panel 8 is obtained by attaching a face material 8b such as a plywood to both front and back surfaces of a rectangular frame formed by assembling the eaves 8a into a rectangular frame shape. And the said parapet 1 is comprised by joining the several wall panel 8 to a horizontal direction. At the upper end portion of the wall panel 8, a long head connecting material 10 is provided in the length direction of the parapet 1, and the upper end portions of the plurality of wall panels 8 are connected by the head connecting material 10.
The wall panel 8 constituting the parapet 1 is connected to the wall panel 4 constituting the outer wall 3 of the building main body 2 by the trunk difference bolt 11 and is fixed by hitting the screw nail 12 obliquely. In addition, the joining surface of the wall panel 8 and the wall panel 4 is joined also with the adhesive agent.
Moreover, the head connecting material 10 coping 13 is attached. The headboard 13 is long in the longitudinal direction of the head connecting material 10, and one side in the width direction covers the upper end portion of the exterior material 6 of the parapet 1.
The parapet 1 having such a configuration is formed along the outer wall when the building body 2 is viewed in plan, for example.

The roof 15 provided in the upper part of the building body 2 is configured by joining a plurality of roof panels 16 in the lateral direction. The roof panel 16 is obtained by attaching a face material 16b such as a plywood to the surface (upper surface) of a rectangular frame formed by assembling the frame material 16a into a rectangular frame shape. Further, a face material 17 such as a plywood is further attached to the upper surfaces of the plurality of roof panels 16. Therefore, the roof 15 constituted by the roof panel 16 has a structure in which two upper and lower face members 17 and 16b are laminated and pasted.
A joint beam 18 is provided at the eaves of the plurality of roof panels 16. The joint beam 18 is a long square member along the eaves portion of the roof 15, and the eave portions of the plurality of roof panels 16 are connected by the joint beam 18. Further, the joint beam 18 is fixed to the lower end portion of the parapet 1 by the screw nail 12, and thereby the eaves portion of the roof 15 is joined. Further, the face material 17 slightly protrudes from the front end of the roof panel 16, and the front end portion is in contact with the parapet 1.
The upper surface 15a of the roof 15 having such a structure is provided with a slight water gradient of about 1/12, and is inclined so as to be positioned downward toward the eaves.

A horizontal surface forming member 20 is fixed to the upper surface of the eaves portion of the roof 15. As shown in FIG. 2, the horizontal plane forming member 20 is formed of plywood or the like, and is formed along the eaves portion of the roof 15 to be long.
The horizontal plane forming member 20 is formed in a triangular shape having a transverse cross section, and the angle formed between the horizontal upper surface 20a and the inclined surface 20b is equal to the angle formed between the upper surface 15a of the roof 15 and the horizontal plane.
Such a horizontal surface forming member 20 abuts the inclined surface 20b on the upper surface 15a of the roof 15 and a vertical surface 20c abuts on the back surface of the parapet 1. Further, the screw nail 12 is attached to the roof panel 16 from the upper surface 15a. By being driven into 16a, it is fixed to the upper surface 15a of the eaves portion of the roof 15.

Further, a flange 21 is provided at a portion spaced from the distal end of the horizontal plane forming member 20 by a predetermined distance to the proximal end side with its upper end opening opened on the upper surface of the horizontal plane forming member 20. That is, a through hole is formed in the base end portion of the horizontal plane forming member 20, and through holes are formed in the face material 16 b and the face material 17 of the roof panel 16 so as to face the through hole.
Moreover, the gutter 21 includes a gutter body 21a and a drainage gutter 21b to which the gutter body 21 is connected, and the drainage gutter 21b is inserted and fixed in the through hole.
The upper end of the drainage basin 21b is open to the upper surface of the horizontal surface forming member 20, and rainwater that has fallen on the roof 15 flows along the water gradient along the upper surface 15a of the roof 15, and flows into the main body 21a from the drainage basin 21b. It has become. A lid member 22 is attached to the drainage basin 21b. Although the upper surface of the lid member 22 is closed, it has many openings such as slits or holes on the outer peripheral surface side, and rainwater flows into the drainage basin 21b from these openings.

A waterproof sheet 25 is attached to the upper surface 15a of the roof 15 so as to cover the entire upper surface 15a. The waterproof sheet 25 covers the upper surface of the horizontal plane forming member 20, and the tip of the waterproof sheet 25 is raised from the tip of the horizontal plane forming member 20 and extends to the upper end on the back side of the parapet 1. Yes. A hole is formed in a portion of the waterproof sheet 25 corresponding to the drainage basin 21b.
As shown in FIG. 1, one end of a waterproof tape (butyl sealer) 26 is attached to the upper end of the waterproof sheet 25 raised up to the upper end on the back side of the parapet 1. The other end of the waterproofing / breathable sheet 27 is suspended from the upper surface of the head connecting member 10 to the upper end of the surface of the wall panel 8 constituting the parapet 1, and is attached to the surface of the wall panel 8. It is stuck on the part.

Further, as shown in FIGS. 1 and 2, a support girder 30 is fixed to the lower end portion of the parapet 1. The support girder 30 is a square bar that is long along the eaves portion of the roof 15, and is fixed to the ribs 8 a of the wall panel 8 constituting the parapet 1 by screw nails 12. The support beam 30 is also fixed to the upper end portion of the wall panel 4 constituting the outer wall 3 by the screw nails 12. Thus, the lower surface of the eaves part of the roof 15 is installed in the support beam 30. That is, the lower surface of the eaves portion of the roof 15 is supported by the support beam 30.
A ceiling 32 is horizontally provided below the roof 15 as shown in FIG. The ceiling 32 is formed of a gypsum board, and the end thereof is fixed to the field material 33. The field material 33 is fixed to the rear surface of the upper end of the wall panel 4 constituting the outer wall 3.
In the attic space 34 between the ceiling 32 and the roof 15, the eaves main body 21 a of the eaves 21 is piped. The eaves body 21a protrudes downward from the lower surface of the roof panel 16 and is bent in the lateral direction. The bent fence body 21a is provided with a water gradient, and is further extended, for example, piped to the outside through the outer wall 3, and further bent downward to the lower end of the building body 2. Has been issued.
A heat insulating material 35 is provided in the wall panel 4 constituting the outer wall 3 or on the back side of the ceiling 32.

According to the drainage structure of the roof eave portion configured as described above, the ridge 21 for draining rainwater that has fallen on the roof 15 is predetermined from the front end of the horizontal plane forming member 20 fixed to the upper surface of the eave portion of the roof 15. Since it is provided in the site | part spaced apart to the base end side only by the distance, the screw nail 12 for joining the eaves part of the roof 15 to the parapet 1, and a reinforcing material (joint girder material 18, support girder material 30) Etc.) can be installed easily. Therefore, parts such as a sloped floor portion are unnecessary, the number of parts is small, construction is easy, and drainage can be reliably performed by the eaves 21 at the eaves portion of the roof 15.
Further, the horizontal plane forming member 20 is formed in a right-angled triangular shape in cross section, and the angle formed between the upper surface 20a and the inclined surface 20b is equal to the angle formed between the upper surface 15a of the roof 15 and the horizontal plane. By bringing the inclined surface 20b into contact with the upper surface 15a of the roof 15, the upper surface 20a of the horizontal surface forming member 20 becomes horizontal. Therefore, the horizontal surface forming member 20 can be fixed to the upper surface of the eaves portion of the roof 15 so that the upper surface 20a thereof is easily and reliably horizontal.
Moreover, since the vertical surface 20c of the horizontal surface forming member 20 is brought into contact with the back surface of the parapet 1, the horizontal surface forming member 20 can be easily positioned in the lateral direction.

Furthermore, since the prevention sheet 25 covers the upper surface 20a of the horizontal plane forming member 20, the tip of the waterproof sheet 25 is raised from the tip of the horizontal plane forming member 20 and extends to the upper end of the parapet 1. Waterproofing of the joint part between the eaves part of the roof 15 and the parapet 1 can be reliably performed.
In addition, since the lower surface of the eaves portion of the roof 15 is supported by the support beam 30 fixed to the parapet 1, the eave portion of the roof 15 can be reliably supported by the parapet 1.
In addition, since the eaves 21 are piped in the attic space 34 between the ceiling 32 and the roof 15 provided below the roof 15, rainwater flowing toward the eaves side of the roof 15 is passed through the eaves 21. Can be easily drained.

  In the present embodiment, the horizontal surface forming member 20 is fixed to the upper surface 15a of the eaves portion of the roof 15 so that the upper surface 20a is horizontal, but as shown in FIG. You may fix so that 40a may incline a little inside. In this case, the ridge is provided at a portion where the upper surface 40 a of the horizontal surface forming member 40 and the upper surface 15 a of the roof 15 are connected so that the upper end opening thereof opens to the upper surface 40 a of the horizontal surface forming member 40.

Moreover, in this Embodiment, as shown in FIG. 2, although the horizontal surface formation member 20 was formed in the cross-sectional right triangle shape, it does not restrict to this. For example, as shown in FIG. 4, the horizontal plane forming member 20 is formed of a horizontal plane forming member main body 40 formed of plywood or the like, and a plywood or the like attached to the lower surface of the horizontal plane forming member main body 40 in a stacked manner. You may comprise with the gradient adjustment materials 40a and 41b.
In this case, one end of the gradient adjusting member 40 a is in contact with the back surface of the parapet 1, and the other end is in contact with the upper surface of the roof panel 16. One end of the gradient adjusting member 41 b is in contact with the back surface of the parapet 1, and the other end is in contact with the top surface of the roof panel 16. Thereby, the upper surface of the horizontal surface forming member main body 40 is horizontal. That is, the thicknesses and lengths of the gradient adjusting members 40a and 41b are adjusted so that the upper surface of the horizontal plane forming member main body 40 is horizontal.
In this way, by configuring the horizontal plane forming member 20 with the horizontal plane forming member main body 40 and the gradient adjusting members 40a and 41b, the horizontal plane forming member 20 can be easily arranged so that the upper surface thereof becomes horizontal according to the inclination of the roof 15. Can be installed.
Note that the number of the gradient adjusting members is appropriately set according to the inclination of the roof 15 and the like. In FIG. 4, the ridges 21 and the like are omitted.

It is a sectional side view which shows an example of the drainage structure of the roof eaves part of this invention. It is an expanded sectional side view of the principal part of the drainage structure shown in FIG. It is a sectional side view of the principal part which shows the other example of the drainage structure of the roof eaves part of this invention. It is a sectional side view of the principal part which shows the other example of the drainage structure of the roof eaves part of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parapet 2 Building body 3 Exterior wall 15 Roof 15a Roof upper surface 16 Roof panel 20 Horizontal surface forming member 20a Upper surface 20b Slope 21 竪 樋 25 Waterproof sheet 30 Supporting girder 32 Ceiling 34 Attic space

Claims (3)

A drainage structure of the roof eaves part in which a parapet is erected on the upper end of the outer wall of the building body, and the eaves part of the roof is joined to this parapet,
On the top surface of the eaves part of the roof, a horizontal plane forming member extending along the eaves part is fixed so that the upper surface is inclined horizontally or slightly inward,
At a portion spaced from the distal end of the horizontal plane forming member by a predetermined distance to the proximal end side, a ridge is provided with its upper end opening opened on the upper surface of the horizontal plane forming member,
A ceiling is provided below the roof, and the fence is piped in the attic space between the ceiling and the roof,
This ridge is bent in the lateral direction, further extended and penetrated through the outer wall, and is piped outside .
A supporting girder material is fixed to the lower end portion of the parapet, and this supporting girder material is also fixed to the upper end portion of the outer wall,
The lower surface of the eaves part of the roof is supported by the support girder,
The drainage structure of the roof eaves part characterized by the said eaves being arrange | positioned at the ridge side of the said roof from the said support girder . In the drainage structure of the roof eaves part of Claim 1,
The drainage structure for the roof eaves portion, wherein the horizontal plane forming member is formed in a triangular shape having a transverse cross section, and an angle formed between the upper surface and the slope is equal to an angle formed between the upper surface of the roof and the horizontal plane. In the drainage structure of the roof eaves part according to claim 1 or 2,
A waterproof sheet is attached to the upper surface of the roof so as to cover the upper surface of the horizontal plane forming member, and the tip of the waterproof sheet is raised from the tip of the horizontal plane forming member, and the upper end of the parapet The drainage structure of the roof eaves part characterized by being extended to.

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