JP7245197B2 - Airtight structure of building and method for assembling airtight members - Google Patents

Description

TECHNICAL FIELD The present invention relates to an airtight structure of a building and a method of assembling an airtight member.

In Patent Document 1 below, an inter-floor space is formed between a ceiling base material of a balcony unit equipped with an inner balcony and a floor base material of a unit under the balcony, and an inter-floor heat insulating material is installed in this inter-floor space. A structure is disclosed. Further, in Patent Document 1 below, reinforcing beams are arranged in the ceiling part of the unit under the balcony, and inter-floor space is achieved by sandwiching an inter-floor heat insulating material between the upper surface of this reinforcing beam and the balcony floor beam. It suppresses the circulation of air in

JP 2012-172393 A

However, the heat insulating structure described in Patent Document 1 does not consider the airtight structure of the ceiling of the inner balcony, and there is room for improvement in terms of improving the heat insulating performance of the entire building.

SUMMARY OF THE INVENTION In view of the above facts, it is an object of the present invention to provide an airtight structure for a building and a method for assembling airtight members that can improve the insulation performance of a building that includes building units with inner balconies. do.

The airtight structure of the building according to the first aspect includes: a first building unit provided under a flat roof and provided with a wing wall that separates a semi-outdoor space from an indoor space; a second building unit provided below the flat roof and provided with a front wall at the boundary portion with the semi-outdoor space; and a first ceiling girder disposed along the boundary portion in the first building unit. A first airtight member provided on the upper surface of the first ceiling girder and closing the gap between the flat roof, and a first airtight member disposed facing the first ceiling girder across an outside air space in the second building unit 2. A second airtight member provided on the upper surface of the ceiling girders and closing the gap between the second ceiling girders and the flat roof, and closing the gap between the first ceiling girders and the second ceiling girders above the wing walls. a third airtight member; and a fourth airtight member disposed below the third airtight member and closing a gap between the ceiling base material of the first building unit and the ceiling base material of the second building unit. have.

In the airtight structure of the building according to the first aspect, a first building unit and a second building unit are provided adjacently under a flat roof, and the first building unit is a semi-outdoor space (inner It has a wing wall that separates the balcony) from the indoor space. On the other hand, the second building unit has a front wall at the boundary with the semi-outdoor space. Here, in the first building unit, the first ceiling girders are arranged along the boundary with the second building unit. A closing first airtight member is provided. On the other hand, the second building unit is provided with a second ceiling girder facing the first ceiling girder across the open air space. Therefore, the space between the first ceiling girders and the second ceiling girders is an outside air space. A second airtight member is provided on the upper surface of the second ceiling girders to close the gap between the second ceiling girders and the flat roof. As a result, even if an outside air space is formed between the first building unit and the second building unit, it is possible to suppress the inflow of outside air from this outside air space to the flat roof.

A third airtight member is provided above the wing wall, and the third airtight member closes the gap between the first ceiling girder and the second ceiling girder. Furthermore, a fourth airtight member is arranged below the third airtight member, and this fourth airtight member closes the gap between the ceiling base material of the first building unit and the ceiling base material of the second building unit. is As a result, it is possible to suppress the inflow of outside air from the semi-outdoor space of the first building unit into the indoor space. Thus, even in a building having a semi-outdoor space, the inflow of outside air into the flat roof is suppressed, and the heat insulating performance of the flat roof can be ensured.

In the airtight structure of a building according to a second aspect, in the first aspect, ends of the first airtight member and the second airtight member are connected by a connecting member, and the connecting member is the third airtight member. It is arranged in close contact with the upper end of the member.

In the airtight structure of the building according to the second aspect, the first airtight member, the second airtight member, the third airtight member, and the connecting member close the ceiling of the semi-outdoor space and the flat roof without any gap. This makes it possible to more reliably suppress the inflow of outside air into the flat roof.

In the airtight structure of a building according to a third aspect, in the first aspect or the second aspect, the third airtight member includes a body portion positioned between the first ceiling girders and the second ceiling girders. , and a hook portion provided at the upper end portion of the body portion and superimposed on the upper surface of the first ceiling girder and the upper surface of the second ceiling girder, respectively.

In the airtight structure of the building according to the third aspect, the third airtight member is inserted from above the first ceiling girders and the second ceiling girders by providing a hook at the upper end of the main body of the third airtight member. can be installed. Thereby, working efficiency can be improved.

In the airtight structure of a building according to a fourth aspect, in the third aspect, the main body portion includes a board member whose plate thickness direction is the extending direction of the first ceiling girders and the second ceiling girders, and the board member a frame-shaped member provided so as to surround from both sides in the width direction and from the lower side,
A lower end portion of the frame-shaped member is fixed to a first joist provided under the first ceiling girder and a second joist provided below the second ceiling girder.

In the airtight structure of the building according to the fourth aspect, the board member suppresses the inflow of outside air from the semi-outdoor space to the indoor space of the first building unit. In addition, since the board member is reinforced by the frame-shaped member, and the lower end of the frame-shaped member is fixed to the first joist and the second joist, respectively, the arrangement state of the third airtight member can be maintained for a long period of time. can be maintained well.

A method for assembling an airtight member according to a fifth aspect includes a first building unit provided under a flat roof and provided with a wing wall that separates a semi-outdoor space from an indoor space, and adjacent to the first building unit. and a second building unit provided below the flat roof and provided with a front wall at the boundary with the semi-outdoor space, wherein the first A first airtight member is disposed above the first ceiling girders arranged along the boundary portion of the building unit so as to close the gap between the first ceiling girders and the flat roof, and an outside air space is sandwiched. A second airtight member is arranged above the second ceiling girders arranged in the second building unit to face the first ceiling girders so as to close the gap between the second ceiling girders and the flat roof. disposing a third airtight member above the wing wall so as to close the gap between the first ceiling girder and the second ceiling girder; below the third airtight member, the first disposing a fourth airtight member so as to block a gap between the ceiling base material of the building unit and the ceiling base material of the second building unit.

In the airtight member assembling method according to the fifth aspect, the provision of the first airtight member and the second airtight member suppresses the inflow of outside air from the outside air space to the flat roof. In addition, by arranging the third airtight member so as to close the gap between the first ceiling girders and the second ceiling girders above the wing wall, the outside air from the semi-outdoor space to the indoor space of the first building unit can suppress the inflow of Furthermore, by arranging the fourth airtight member below the third airtight member so as to block the gap between the ceiling base material of the first building unit and the ceiling base material of the second building unit, Inflow of outside air from the semi-outdoor space to the indoor space is suppressed. If the fourth airtight member is inserted into the lower part of the third airtight member from the lower side of the ceiling base material, the second airtight member can be installed without interfering with the front wall between the semi-outdoor space and the second building unit. 4 An airtight member can be provided.

INDUSTRIAL APPLICABILITY As described above, according to the airtight structure of a building and the method for assembling an airtight member according to the present invention, it is possible to improve the heat insulating performance of a building including building units having inner balconies.

It is a perspective view showing roughly the whole building structure concerning an embodiment. 2 is an enlarged cross-sectional view showing a state cut along line 2-2 of FIG. 1; FIG. FIG. 2 is an enlarged cross-sectional view showing a state cut along line 3-3 of FIG. 1, showing a state before the ceiling joint member is installed; FIG. 2 is an enlarged cross-sectional view showing a state cut along line 4-4 of FIG. 1, showing a state in which a ceiling joint member is arranged; FIG. 2 is an enlarged cross-sectional view showing a state cut along line 3-3 of FIG. 1 and showing a state in which a ceiling joint member is arranged; It is a perspective view showing roughly the whole building structure concerning a comparative example. 7 is an enlarged cross-sectional view showing a state cut along line 7-7 of FIG. 6; FIG.

Hereinafter, the airtight structure of the building 10 according to the embodiment will be described with reference to the drawings. In the following description, two horizontal directions perpendicular to each other are defined as the X direction and the Y direction.

As shown in FIG. 1, a building 10 to which the airtight structure of the present embodiment is applied is formed by arranging a plurality of building units vertically and horizontally. A second floor portion of the building 10 is configured including the building unit 12 and the second building unit 14 . A third building unit 16 and a fourth building unit 18 are arranged below the first building unit 12 and the second building unit 14. The third building unit 16 and the fourth building unit 18 provide 10 ground floor parts are constructed. Furthermore, the building 10 of the present embodiment has a configuration including a flat roof 20 above the first building unit 12 and the second building unit 14 . The first building unit 12 and the second building unit 14, which are essential parts of the present invention, will be described below.

The first building unit 12 is provided below the flat roof 20 and is formed in a substantially rectangular parallelepiped shape with the X direction as the longitudinal direction. In addition, the first building unit 12 includes a semi-outdoor space (inner balcony) S1 and an indoor space S2 that are adjacent in the X direction. and the indoor space S2.

The semi-outdoor space S1 is a substantially rectangular parallelepiped space, and one side in the Y direction is open. A balustrade 26 is provided on one side in the Y direction that is open. A front wall 24 is provided on the other side in the Y direction in the semi-outdoor space S1. As shown in FIG. 2 , the front wall 24 is arranged at the boundary between the first building unit 12 and the second building unit 14 and attached as the second building unit 14 . In FIG. 2, the docking line DL, which is the boundary between the first building unit 12 and the second building unit 14, is indicated by a dashed line.

Here, as shown in FIG. 1, a ventilation blocking member 28 is arranged at the outer peripheral edge of the ceiling of the building 10 . Specifically, the air blocking member 28 is arranged continuously along the outer peripheral edge of the ceiling of the second building unit 14 along three sides excluding the side adjacent to the first building unit 12 .

In addition, the ventilation blocking members 28 are arranged along the outer peripheral edge of the ceiling of the first building unit 12 along three sides excluding the side adjacent to the second building unit 14 . Here, the ventilation blocking member 28 arranged at the outer peripheral edge of the semi-outdoor space S1 side of the first building unit 12 is continuous with the ventilation blocking member 28 arranged in the second building unit 14 without any gap. are arranged. The ventilation blocking member 28 is formed of, for example, a sponge tape containing resin sponge such as soft urethane sponge and polyurethane foam as a main component.

On the other hand, at the outer peripheral end of the semi-outdoor space S1 of the first building unit 12, a ventilation blocking member 28 extends continuously in the X direction from the indoor space S2, and further extends in the corner of the semi-outdoor space S1. A ventilation blocking member 28 extends in the Y direction from the second building unit 14 toward the second building unit 14 .

Here, the first airtight member 30 is arranged along the X direction at the outer peripheral end adjacent to the second building unit 14 in the ceiling of the semi-outdoor space S1. A second airtight member 32 is arranged along the X direction at the outer peripheral edge of the ceiling of the second building unit 14 adjacent to the semi-outdoor space S1 of the first building unit 12 .

(First airtight member 30 and second airtight member 32)
As shown in FIG. 2 , the first airtight member 30 is provided on the upper surface 34A of the first ceiling girders 34 arranged along the docking line DL in the first building unit 12 . The first ceiling girders 34 are formed of channel steel with a substantially U-shaped cross section that is open on the side opposite to the second building unit 14 side. 42 is attached. One end of a first ceiling beam 43 is fixed to the first mounting bracket 42 . The first ceiling girders 43 extend in the Y direction, and the other end of the first ceiling girders 43 is fixed to a ceiling girders (not shown) arranged substantially parallel to the first ceiling girders 34. there is

A first L-shaped bracket 38 is fastened to the upper surface 34A of the first ceiling girder 34, and a first roof frame 46 constituting the flat roof 20 is fixed to the first L-shaped bracket 38. As shown in FIG. A first ceiling joist 50 is provided on the lower surface 34B of the first ceiling girders 34, and a first ceiling base material 54 is superimposed on the lower surface of the first ceiling joist 50. - 特許庁The first joists 50 and the first ceiling base material 54 are fixed to the first ceiling girders 34 .

Here, the first airtight member 30 is attached to the upper surface of the first L-shaped bracket 38 , and the first airtight member 30 closes the gap between the first ceiling girders 34 and the flat roof 20 .

The second airtight member 32 is provided on the upper surface 36A of the second ceiling girders 36 arranged along the docking line DL in the second building unit 14 . The second ceiling girders 36 are arranged with a gap between them and the first ceiling girders 34 . Therefore, the space between the first ceiling girders 34 and the second ceiling girders 36 forms an outside air space S3 that communicates with the outside of the building 10 .

The second ceiling girders 36 are formed of channel steel with a substantially U-shaped cross section that is open on the side opposite to the first building unit 12 side. 44 is attached. One end of a second ceiling beam 45 is fixed to the second mounting bracket 44 . The second ceiling girders 45 extend in the Y direction, and the other ends of the second ceiling girders 45 are fixed to ceiling girders (not shown) arranged substantially parallel to the second ceiling girders 36. there is

A second L-shaped bracket 40 is fastened to the upper surface 36A of the second ceiling girder 36, and a second roof frame 48 constituting the flat roof 20 is fixed to the second L-shaped bracket 40. As shown in FIG. A second ceiling joist 52 is provided on the lower surface 36B of the second ceiling girders 36, and a second ceiling base material 56 is superimposed on the lower surface of the second ceiling joist 52. - 特許庁A second ceiling joist 52 and a second ceiling base material 56 are fixed to the second ceiling girders 36 . Further, a wall surface 58 on the living room side is provided on the indoor side of the front wall 24 in the second building unit 14, and the space between the front wall 24 and the wall surface 58 communicates with the outside air space S3.

Here, the second airtight member 32 is attached to the upper surface of the second L-shaped bracket 40 , and the second airtight member 32 closes the gap between the second ceiling girders 36 and the flat roof 20 .

As shown in FIG. 1 , one end of the first airtight member 30 and the second airtight member 32 is connected to the air blocking member 28 . Further, the other ends of the first airtight member 30 and the second airtight member 32 extend to the vicinity of the sleeve wall 22 .

(Third airtight member 60)
As shown in FIGS. 3 and 4, a third airtight member 60 is provided between the first ceiling girders 34 and the second ceiling girders 36, and the third airtight member 60 is attached to the wing wall 22. located above (see FIG. 1).

The third airtight member 60 includes a body portion 62 and a hook portion 64 . The body portion 62 includes a board member 62A and frame members 62B, 62C, and 62D. The board member 62A is formed of a gypsum board and positioned between the first ceiling girders 34 and the second ceiling girders 36, and extends in the X direction, which is the direction in which the first ceiling girders 34 and the second ceiling girders 36 extend. is arranged in the plate thickness direction. The end of the outside air space S3 is closed by the board member 62A.

A frame-shaped member 62B and a frame-shaped member 62C are provided on both sides in the width direction of the board member 62A. The frame member 62B is made of wood and is fixed to one end of the board member 62A in the Y direction, and extends in the X direction from the board member 62A toward the indoor space S2 with the Y direction being the plate thickness direction. ing. The frame member 62C is made of wood and is fixed to the other end of the board member 62A in the Y direction. extended.

The frame member 62D is made of wood, is attached to the surface of the board member 62A on the indoor space S2 side, and extends in the Y direction. One end of the frame-shaped member 62D is fixed to the lower end of the frame-shaped member 62B, and the other end of the frame-shaped member 62D is fixed to the lower end of the frame-shaped member 62C. That is, the frame-shaped member 62B and the frame-shaped member 62C are connected in the Y direction by the frame-shaped member 62D. The board member 62A is surrounded from both sides in the width direction and from below by the frame-shaped member 62B, the frame-shaped member 62C, and the frame-shaped member 62D.

Here, as shown in FIG. 4, the frame-shaped member 62D is shorter in the X direction than the frame-shaped members 62B and 62C. In other words, the frame-shaped member 62B and the frame-shaped member 62C extend further in the X direction than the frame-shaped member 62D. A lower end portion of the frame-shaped member 62C is fixed to the second joist 52 at a position indicated by a cross in FIG. Similarly, the lower end of the frame member 62B is fixed to the first joist 50 (see FIG. 3).

A hook portion 64 is provided at the upper end portion of the body portion 62 . The hook portions 64 are fixed to the upper end surfaces of the board member 62A, the frame-shaped member 62B, and the frame-shaped member 62C. Also, as shown in FIG. 3, one end 64A and the other end 64B in the Y direction of the hook portion 64 extend outward from the body portion 62, respectively, and extend outward from the upper surface of the first ceiling girder 34 and the second end 64B. They are superimposed on the upper surface of the ceiling girders 36, respectively.

(Fourth airtight member 68)
As shown in FIG. 5 , below the third airtight member 60 is a fourth airtight member 60 that closes the gap between the first ceiling base material 54 of the first building unit 12 and the second ceiling base material 56 of the second building unit 14 . An airtight member 68 is provided.

The fourth airtight member 68 is formed in a flat plate shape with the vertical direction as the plate thickness direction, and the upper surface of the fourth airtight member 68 is in contact with the lower end surface of the third airtight member 60 . 4, the lower surface of the fourth airtight member 68 is in contact with the upper end surface of the sleeve wall 22. As shown in FIG. The fourth airtight member 68 extends in the X direction from the ceiling side of the indoor space S2 toward the semi-outdoor space S1. It is located on the side of the semi-outdoor space S1.

(Connecting member 70)
As shown in FIGS. 4 and 5, a connecting member 70 is arranged above the third airtight member 60 . The connecting member 70 is formed of a sponge tape like the first airtight member 30 and the second airtight member 32, and is formed in a long shape with the Y direction as the longitudinal direction.

Here, one Y-direction end of the connecting member 70 is in close contact with the first airtight member 30 , and the other Y-direction end of the connecting member 70 is in close contact with the second airtight member 32 .

On the upper surfaces of the first roof frame 46 and the second roof frame 48, sheathing boards 72 of the flat roof 20 are arranged. When the sheathing board 72 is arranged, the first airtight member 30, the second airtight member 32, and the connecting member 70 are pressed to come into close contact with the first L-shaped bracket 38, the second L-shaped bracket 40, and the hooking portion 64. .

(Method of assembling the airtight member)
Next, a method for assembling the airtight member according to this embodiment will be described. Specifically, a procedure for assembling the first airtight member 30, the second airtight member 32, the third airtight member 60, the connecting member 70 and the fourth airtight member 68 will be described.

First, as shown in FIG. 2 , the first airtight member 30 is arranged above the first ceiling girders 34 so as to block the gap between the first ceiling girders 34 and the flat roof 20 . Similarly, the second airtight member 32 is arranged above the second ceiling girders 36 so as to close the gap between the second ceiling girders 36 and the flat roof 20 . At this time, since the sheathing board 72 (see FIG. 5) of the flat roof 20 is not attached, the first airtight member 30 is attached from above the first ceiling girders 34, and the second airtight member 32 is attached from above the second ceiling girders 36. can be attached from

Next, as shown in 3, a third airtight member 60 is arranged above the sleeve wall 22 so as to close the gap between the first ceiling girders 34 and the second ceiling girders 36 . Here, since the third airtight member 60 is formed with a hook portion 64, the third airtight member 60 can be attached so as to be inserted into the gap between the first ceiling girders 34 and the second ceiling girders 36 from above. .

After inserting the third airtight member 60, the frame-shaped member 62B is fixed to the first joist 50 and the frame-shaped member 62C is fixed to the second joist 52 from below on the semi-outdoor space S1 side. At this time, since the ceiling plate 69 constituting the ceiling on the semi-outdoor space S1 side is not attached, the work can be performed through the gap between the first ceiling base material 54 and the front wall 24 .

After disposing the third airtight member 60, the connecting member 70 is disposed above the third airtight member 60, as shown in FIG. Also, the connecting member 70 connects the first airtight member 30 and the second airtight member 32 .

Finally, a fourth airtight member 68 is arranged below the third airtight member 60 so as to close the gap between the first ceiling base material 54 and the second ceiling base material 56 . As shown in FIG. 4, the fourth airtight member 68 is attached so as to be inserted between the sleeve wall 22 and the third airtight member 60 from the indoor space S2 side of the first building unit 12 . As described above, the first airtight member 30, the second airtight member 32, the third airtight member 60, the connecting member 70 and the fourth airtight member 68 are assembled.

(Action and effect)
Next, the operation and effects of this embodiment will be described.

In the building 10 to which the airtight structure according to the present embodiment is applied, even if the outside air space S3 is formed between the first ceiling girders 34 and the second ceiling girders 36, the first airtight members 30 and The second airtight member 32 can prevent outside air from flowing into the flat roof 20 from the outside air space S3.

A third airtight member 60 is provided above the sleeve wall 22, and the third airtight member 60 closes the gap between the first ceiling girders 34 and the second ceiling girders 36. - 特許庁Further, a fourth airtight member 68 is arranged below the third airtight member 60, and the fourth airtight member 68 closes the gap between the first ceiling base material 54 and the second ceiling base material 56. ing. Thereby, it is possible to suppress the outside air from flowing into the indoor space S2 from the semi-outdoor space S1. Thus, even in the building 10 having the semi-outdoor space S1, the inflow of outside air into the flat roof 20 is suppressed, and the heat insulation performance of the flat roof 20 can be ensured. As a result, the heat insulation performance of the entire building can be improved.

The above effect will be described with reference to a comparative example shown in FIGS. 6 and 7. FIG. In addition, in the following description, the same reference numerals are given to the same configurations as in the embodiment, and the description thereof will be omitted as appropriate.

As shown in FIG. 6, the building 100 of the comparative example is provided with an air blocking member 102 instead of the air blocking member 28 of the embodiment. The ventilation blocking member 102 is arranged along the outer peripheral edge of the ceiling of the first building unit 12 and the second building unit 14 over one round. In addition, the first airtight member 30 and the second airtight member 32 are not installed in the building 100 .

As indicated by the arrow W in FIG. 7, in the building 100 of the comparative example, outside air enters between the front wall 24 and the wall surface 58 of the living room from the semi-outdoor space S1 side. It enters between the ceiling girders 36 . Since the outside air is ventilated to the inner space of the flat roof 20 above the first ceiling girders 34 and the second ceiling girders 36, the heat insulating effect of the ceiling section in the second building unit 14 in particular cannot be obtained.

As described above, in the building 100 having the semi-outdoor space S1, it is insufficient to prevent outside air from flowing in from the outer periphery of the ceiling.

On the other hand, in this embodiment, as shown in FIG. 20 are closed without gaps. As a result, the inflow of outside air into the flat roof 20 can be more reliably suppressed.

Further, by providing a hook portion 64 on the upper end portion of the body portion 62 of the third airtight member 60, the third airtight member 60 can be attached so as to be inserted from above the first ceiling girders 34 and the second ceiling girders 36. . As a result, the third airtight member 60 can be fixed in a hooked state, so that work efficiency when assembling the third airtight member 60 can be improved.

Furthermore, since the main body portion 62 of the third airtight member 60 includes the board member 62A and the frame members 62B, 62C, and 62D, the board member 62A allows outside air to pass from the semi-outdoor space S1 to the indoor space S2. inflow is suppressed. Further, the board member 62A is reinforced by the frame-shaped members 62B, 62C, and 62D, and the lower ends of the frame-shaped members 62B and 62C are fixed to the first joist 50 and the second joist 52, respectively. The arrangement state of the third airtight member 60 can be favorably maintained over a period of time.

Furthermore, by assembling the first airtight member 30, the second airtight member 32, the third airtight member 60, the connecting member 70, and the fourth airtight member 68 by the assembly method described above, a building is formed from a plurality of building units. Even in such a case, the work procedure does not become complicated. That is, there is no need to dismantle the building unit on site to assemble the sealing member.

For example, the fourth sealing member 68 can be installed without having to remove the front wall 24 . In general, the ceiling joint material is assembled by, for example, driving a screw into each of the first ceiling base material 54 and the second ceiling base material 56 from below. However, in the building 10 having the semi-outdoor space S1, the ceiling joint material cannot be fixed to the second ceiling base material 56 because the front wall 24 becomes an obstacle. On the other hand, in the present embodiment, the third airtight member 60 is provided in advance, and the fourth airtight member 68 is inserted from the indoor space S2 side into the semi-outdoor space S1 side. The fourth airtight member 68 can be arranged without the wall 24 becoming an obstacle.

Although the airtight structure of the building 10 according to the embodiment has been described above, it is needless to say that it can be implemented in various forms without departing from the gist of the present invention. For example, in the above-described embodiment, as shown in FIG. 3, the lower end of the third airtight member 60 is fixed to the first joist 50 and the second joist 52, but the present invention is not limited to this. That is, if the gap between the first ceiling girders 34 and the second ceiling girders 36 can be closed, it is not necessary to fix to the first joists 50 and the second joists 52 .

In addition, in the above-described embodiment, the main body portion 62 of the third airtight member 60 is composed of the board member 62A and the frame members 62B, 62C, and 62D, but the present invention is not limited to this. For example, the main body may be formed of one block-like component.

10 Building 12 First building unit 14 Second building unit 20 Flat roof 22 Side walls 30 First airtight member 32 Second airtight member 34 First ceiling girders 34A Upper surface (upper surface of first ceiling girders)
36 Second ceiling girders 36A top surface (top surface of second ceiling girders)
50 First joist 52 Second joist 60 Third airtight member 62 Main body 62A Board member 62B Frame member 62C Frame member 64 Hook 68 Fourth airtight member 70 Connecting member DL Docking line (boundary)
S1 Semi-outdoor space S2 Indoor space S3 Outside air space

Claims (5)

a first building unit provided under a flat roof and provided with a wing wall that separates a semi-outdoor space from an indoor space;
a second building unit provided below the flat roof adjacent to the first building unit and having a front wall at the boundary with the semi-outdoor space;
a first airtight member provided on the upper surface of the first ceiling girders arranged along the boundary portion in the first building unit and closing the gap between the first ceiling girders and the flat roof;
A second airtight seal provided on the upper surface of the second ceiling girders arranged to face the first ceiling girders across the outside air space in the second building unit, and closing the gap between the second ceiling girders and the flat roof a member;
a third airtight member closing a gap between the first ceiling girders and the second ceiling girders above the wing walls;
a fourth airtight member disposed below the third airtight member for closing a gap between the ceiling base material of the first building unit and the ceiling base material of the second building unit;
Airtight structure of the building with End portions of the first airtight member and the second airtight member are connected by a connecting member,
2. The airtight structure of a building according to claim 1, wherein said connecting member is disposed in close contact with the upper end of said third airtight member. The third airtight member includes a main body portion positioned between the first ceiling girder and the second ceiling girder, and an upper end portion of the main body portion that is provided on the upper surface of the first ceiling girder and the second ceiling girder. The airtight structure of the building according to claim 1 or 2, comprising hooks superimposed on the upper surface of each. The main body includes a board member whose plate thickness direction is the direction in which the first ceiling girders and the second ceiling girders extend, and a frame-shaped member provided so as to surround the board member from both sides in the width direction and from the lower side. and
A lower end portion of the frame-shaped member is fixed to a first joist arranged under the first ceiling girder and a second joist arranged under the second ceiling girder, respectively. An airtight structure of the building according to item 3. a first building unit provided under a flat roof and provided with a wing wall that separates a semi-outdoor space from an indoor space;
a second building unit provided below the flat roof adjacent to the first building unit and having a front wall at the boundary with the semi-outdoor space;
A method for arranging an airtight member in a building comprising
A first airtight member is disposed on the upper surface of the first ceiling girders arranged along the boundary portion of the first building unit so as to block a gap between the first ceiling girders and the flat roof, and an outside air space is provided. A second airtight member is provided on the upper surface of the second ceiling girders arranged in the second building unit so as to face the first ceiling girders with the second ceiling girders interposed therebetween so as to block the gap between the second ceiling girders and the flat roof. a step of arranging;
disposing a third airtight member above the wing wall so as to block a gap between the first ceiling girder and the second ceiling girder;
disposing a fourth airtight member below the third airtight member so as to close a gap between the ceiling base material of the first building unit and the ceiling base material of the second building unit;
A method for assembling an airtight member.

Images