JPH07292791A - Waterproof construction of unit building - Google Patents

Abstract

PURPOSE:To secure the waterproof construction of a unit building that is high in water resistance against the infiltration of rainwater not only from a joint between two outer wall panels of building unit but also another joint between the building unit's outer wall panel and a horizontal roof unit. CONSTITUTION:Each joint among outer wall panels 11 themselves of building units 1 being adjacent to one another up and down is filled up with each wall waterproof horizontal sheet 4, and each joint among outer wall panels 11 themselves of the building units 1 being adjacent to one another up and down is filled up with each wall waterproof vertical sheet 5. A joint between a lower edge of a horizontal roof unit 2 and each outer wall panel 11 of the building unit at the lower floor is filled up with a roof waterproof lower sheet 6, and a joint between an upper edge of the horizontal roof unit 2 and the outer wall panel 11 of the building unit 1 at the upper floor is filled up with a roof waterproof upper sheet 7. At a crossed part of the joint between the horizontal roof unit 2 and the outer wall panel 11 of the outer wall panels 1 and the joint between outer wall panels 11 of the building unit 1, two waterproof joint sheets 8 and 9 are superposed with respective sheets 4, 5, 6 and 7 existing in and around this crossed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit building of two or more stories constructed by stacking building units, and more particularly to a waterproof structure thereof.

[0002]

2. Description of the Related Art As one method for increasing the industrial production rate of a building, a unit method is known in which one building is divided into a plurality of units to be produced at a factory, and those units are transported to a construction site for assembly. There is.

As a building constructed by this unit system, for example, there is a building described in Japanese Patent Laid-Open No. 61-102931. This building is on the first floor
A plurality of building units are arranged side by side, and a second floor portion is formed by horizontally arranging a building unit and a horizontal roof unit (a roof unit with a balcony).

By the way, in such a unit building,
Naturally, it becomes necessary to waterproof the joints between the outer wall panels of the building unit. As a waterproof structure of the joint between the outer wall panels of the building unit, there are JP-A-63-40037 and JP-A-63-44046.
As disclosed in the publication, a structure using a waterproof sheet is known.

[0005]

However, although the waterproof structure of the joint between the outer wall panels of the building unit is disclosed, the waterproof structure of the joint between the outer wall panel of the building unit and the horizontal roof unit is disclosed. I can't find anything disclosed.

If the joint between the outer wall panel of the building unit and the horizontal roof unit is not waterproofed, rainwater will infiltrate through the joint, which causes the durability of the building to be reduced.

In view of the above problems, the present invention provides rainwater not only from the joint between the outer wall panels of the building unit but also from the joint between the outer wall panel of the building unit and the horizontal roof unit. It is an object of the present invention to provide a waterproof structure for a unit building with high waterproof property that does not penetrate.

[0008]

In order to achieve the above object, in the waterproof structure for a unit building of the present invention, a lower floor portion formed by arranging a plurality of building units side by side, a building unit and a horizontal roof unit are arranged side by side. In a waterproof structure of a unit building of two or more floors, which has an upper floor portion arranged side by side, a horizontal waterproof sheet for a wall at a joint between outer wall panels of vertically adjacent building units by closing the joint. Is provided, and a wall waterproof vertical sheet is provided at the joint between the outer wall panels of the building units adjacent to each other on the left and right, closing the joint, and the lower edge of the horizontal roof unit and the outer wall panel of the building unit on the lower floor. A roof tarpaulin is provided to close the seam between the two, and the seam is closed at the seam between the upper edge of the horizontal roof unit and the outer wall panel of the building unit on the upper floor. Roof waterproof on the sheet is provided in,
At the intersection of the joint between the horizontal roof unit and the outer wall panel of the building unit and the joint between the outer wall panels of the building unit, a waterproof joint sheet is provided so as to overlap each sheet in the vicinity of the intersection. ing.

That is, in the portion where the corner of the horizontal roof unit and the outer corner of the outer wall panel surface of the building unit are arranged close to each other, the waterproof joint sheet is
A roof joint waterproof sheet, a roof waterproof upper sheet, and a wall waterproof lateral sheet are provided in an overlapping manner, and a waterproof joint sheet is provided at a portion where a corner of the horizontal roof unit and a joint between outer panel panels of the building unit are arranged close to each other. Is
The roof waterproofing lower sheet, the roof waterproofing upper sheet, the wall waterproofing horizontal sheet, and the wall waterproofing vertical sheet will be provided in an overlapping manner.

In the present specification, the horizontal roof unit is also used as a unit that constitutes a roof that can walk on, such as a floor of a balcony.

[0011]

In the waterproof structure for a unit building of the present invention, the seams between the outer wall panels of the building unit are prevented from invading rainwater by the horizontal wall waterproof sheet and the vertical wall waterproof sheet, so that the outer wall panel of the building unit and the horizontal roof. The seams between the units are blocked by rainwater ingress by the roof tarpaulin as well as the roof tarpaulin. Also, a seam between the horizontal roof unit and the exterior wall panel of the building unit,
At the intersection of the seams between the exterior wall panels of the building unit, rainwater entry is also prevented by the waterproof joint sheet.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A waterproof structure for a unit building of an embodiment will be described in detail below with reference to FIGS.

FIG. 1 is a perspective view showing an outline of a waterproof structure for a unit building of this embodiment.

First, referring to FIG. 1, the structure of a unit building will be described. This unit building is a two-story building, and the first floor portion is composed of five building units 1 arranged in two rows. The second-floor portion is configured by arranging four building units 1 in two horizontal rows and a horizontal roof unit 2 next to the building unit 1, and the roof is configured by arranging four pitched roof units 3 in two horizontal rows. Has been done.

Next, the waterproof structure of the unit building will be described with reference to FIG. 1. In this unit building, the joint between the outer wall panels of the vertically adjacent building units 1 and 1 is closed. A wall waterproof horizontal sheet 4 is provided, and a wall waterproof vertical sheet 5 is provided at the joint between the outer wall panels of the building units 1 and 1 that are adjacent to each other on the left and right, closing the joint. The wall waterproof lateral sheet 4 has an upper edge portion bonded to the back surface of the outer wall panel of the upper building unit 1 and a lower edge portion bonded to the outer wall panel surface of the lower building unit 1. The right edge of the wall waterproof vertical sheet 5 is adhered to the outer wall panel surface of the right building unit 1 and the left edge is adhered to the outer wall panel surface of the left building unit 1.

Further, at the joint between the lower edge of the horizontal roof unit 2 and the outer wall panel of the building unit 1 on the lower floor, a roof waterproof lower sheet 6 is provided by closing the joint, and the upper edge of the horizontal roof unit 2 is provided. A roof waterproof upper sheet 7 is provided at a joint between the outer wall panel of the building unit 1 on the upper floor and the outer wall panel of the building unit 1, and the horizontal roof unit 2 and the building unit 1 are provided.
The waterproof joint sheets 8 and 9 are provided at the intersections of the joints between the outer wall panels of the building unit 1 and the outer wall panels of the building unit 1.

It should be noted that the intersection of the seams is the portion A of FIG. 1, that is, the portion where the corner of the horizontal roof unit 2 and the outer corner of the outer wall panel of the building unit 1 are arranged close to each other, and the portion B of FIG. That is, the corners of the horizontal roof unit 2 and the joints between the outer wall panels of the building unit 1 are formed close to each other.

FIG. 2 is a development view of the waterproof joint sheet used in part A in FIG. 1, FIG. 8 is a development view showing the waterproof joint sheet used in part B in FIG. 1, and FIG. 9 is a perspective view of the waterproof joint sheet. It is a figure.

The waterproof joint sheet 8 of the portion A is cut so as to have the shape shown in FIG. 2 when developed, and an adhesive layer is provided on one side of the hatched portion in the figure.

As shown in FIG. 9, the waterproof joint sheet 9 of the B portion is formed by adhering one side of two sheets 91 and 92 to each other.
Is cut so as to have a shape shown in FIG. 8 when developed, and an adhesive layer is provided on one surface of a hatched portion in the drawing.

As the material of the waterproof sheets 8 and 9, for example, a rubberized cloth in which vinylon fiber and butyl rubber are combined can be used.

FIGS. 3 to 7 are perspective views showing the waterproof structure of the portion A in FIG. 1 in the construction procedure, and FIGS. 10 to 14 are perspective views showing the waterproof structure of the portion B in FIG. 1 in the construction procedure. Is.

First, the construction of the waterproof structure of the portion A will be described with reference to FIGS. 3 to 7.

In FIG. 3, 11 is an outer wall panel, 12 is a floor joist, and the wall waterproof horizontal sheet 4, the roof waterproof upper sheet 7 and the waterproof joint sheet 8 are the outer wall panels 11 of the building unit 1 on the second floor in the factory in advance. And the floor joist 12 are fixed by adhesion. Further, among the sheets 4, 7, and 8, the lower end of the waterproof joint sheet 8 is superposed on the end of the horizontal wall waterproof sheet 4, and the end of the roof waterproof upper sheet 7 is the upper end of the waterproof joint sheet 8. Overlaid on the section. Further, the lower end portion of the wall waterproof horizontal sheet 4 and the lower end portion of the waterproof joint sheet 8 are placed on the outer wall of the building unit 1 on the first floor after the building unit 1 on the second floor is placed on the building unit 1 on the first floor. It is adhered to the surface of the panel 11.

In FIG. 4, 21 is a horizontal roof unit 2
Is a roof panel, 22 is waterproof paper, and 23 is a base plate. When constructing the horizontal roof unit 2, first, the roof panel 21 is placed and fixed on the building unit 1 on the first floor,
A base plate 23 is fixed in a gap between the roof panel 21 and the outer wall panel 11 of the building unit 1 on the second floor. The roof waterproofing lower sheet 6 and the waterproof paper 22 are attached to the horizontal roof unit 2 in advance in the factory. In addition, roof waterproofing sheet 6
Is a wooden frame 2 attached to the back of the roof panel 21
4, the waterproof paper 22 covers the entire surface of the roof panel 21, and the side surface of the wooden frame 24 also covers the roof waterproof lower sheet 6 from above. Further, when the roof panel 21 is placed on the building unit 1 on the first floor, the corners of the roof panel 21 are made to slip under the waterproof joint sheet 8, and the waterproof joint sheet 8 is placed under the roof waterproof sheet 6 and the waterproof paper 22. And the lower end portion of the roof waterproofing lower sheet 6 is adhered to the surface of the wall panel 11 of the building unit 1 on the first floor. Further, when fixing the base plate 23, the upper end of the base plate 23 is made to sneak into the lower end portion of the roof waterproof upper sheet 7 hanging from the bottom of the outer wall panel 11 of the building unit 1 on the second floor, so that the roof waterproofing is improved. The sheet 7 is adhered to the surface of the base plate 23.

Next, as shown in FIG. 5, the roof panel 21
The base plate 25 is fixed to the side face of the roof plate, the wooden crosspiece 26 is fixed on the base plate 25, and then, as shown in FIG.
Outer panel 11 and 2 of building unit 1 on the first floor
Between the outer wall panels 11 of the building unit 1 of the floor, and
The horizontal mall 10 is attached so as to cover the wall waterproof horizontal sheet 4, the roof waterproof lower sheet 6 and the waterproof joint sheet 8 exposed between the outer wall panel 11 of the first floor building unit 1 and the horizontal roof unit 2. , Affix the waterproof sheet 28 on the wooden cross 26. Further, as shown in FIG. 7, a headboard 29 is attached from above the drainer sheet 28 is attached, and
The drain cover 30 is attached so as to cover up the roof waterproof upper sheet 7 exposed between the outer wall panel 12 of the building unit 1 on the floor and the horizontal roof unit 2.

Next, with reference to FIGS. 10 to 14, the waterproof structure of the portion B will be described in the order of construction. In addition, B
In describing the waterproof structure of the part A, description of parts common to the waterproof structure of the part A will be omitted.

The waterproof joint sheet 9 has two sheets 91 and 92 bonded to a predetermined building unit 1 in a factory, and the building unit 1 on the second floor is placed on the building unit 1 on the first floor at the construction site. After the placement, the two sheets 91 and 92 are adhered to each other as shown in FIG. Further, among the sheets 4, 7, and 9, the lower end portion of the waterproof joint sheet 9 is superposed on the end portion of the horizontal wall waterproof sheet 4, and the end portion of the roof waterproof upper sheet 7 is the upper end of the waterproof joint sheet 9. Overlaid on the section. Further, the lower end portion of the horizontal wall waterproof sheet 4 and the lower end portion of the waterproof joint sheet 9 are placed on the outer wall of the building unit 1 on the first floor after the building unit 1 on the second floor is placed on the building unit 1 on the first floor. It is adhered to the surface of the panel 11.

Also, as shown in FIG. 11, the roof panel 2
When mounting and fixing 1 on the building unit 1 on the first floor, the corners of the roof panel 21 are made to slip under the waterproof joint sheet 9, and the waterproof joint sheet 9 of the roof waterproof lower sheet 6 and the waterproof paper 22 is The waterproof paper 22 is overlaid and adhered from above.

Next, as shown in FIG. 12, at the joint between the outer wall panels 11, 11 of the building units 1, 1 which are adjacent to each other on the left and right, the wall waterproof vertical sheet 5 is adhered by closing the joint, and then, A base plate 25 is fixed to the side surface of the roof panel 21, and a wooden bar 26 is fixed on the base plate 25. The lower end of the wall waterproof vertical sheet 5 is cut at a notch 51, bent at a right angle, and adhered to the surface of the base plate 25 fixed to the side surface of the roof panel 21. That is, only the lower end portion of the vertical wall waterproof sheet 5 is fixed after the base plate 25 is bonded thereto.

Thereafter, as shown in FIG. 13, the roof material 27
When exposed, it is exposed between the outer wall panel 11 of the first floor building unit 1 and the outer wall panel 11 of the second floor building unit 1, and between the outer wall panel 12 of the first floor building unit 1 and the horizontal roof unit 2. The horizontal mall 10 is installed so as to cover the wall waterproof horizontal sheet 4, the roof waterproof lower sheet 6 and the waterproof joint sheet 9 which are installed, and the wooden crossbar 2
A waterproof sheet 28 is attached on top of 6.

Furthermore, as shown in FIG. 14, a drainage sheet 28 is attached and a headstock 29 is attached on the roof waterproofing exposed from the outer wall panel 12 of the building unit 1 on the second floor and the horizontal roof unit 2. A drain cover 30 is attached so as to cover the sheet 7, and a vertical molding 31 is attached so as to cover the wall waterproof vertical sheet 5. Further, a drain cover end is provided in the gap between the drain cover 30 and the vertical molding 31. Attach 32.

That is, in the waterproof structure for a unit building according to the present embodiment, the seams between the outer wall panels 11 of the building unit 1 are prevented from entering rainwater by the wall waterproof horizontal sheet 4 and the wall waterproof vertical sheet 5, so that the building is prevented from entering. At the seam between the outer wall panel 11 of the unit 1 and the horizontal roof unit 2, the roof waterproof upper sheet 7 and the roof waterproof lower sheet 6 prevent rainwater from entering, and the outer wall panel 11 of the horizontal roof unit 2 and the building unit 1 is prevented. The intersection between the seam between and and the seam between the outer wall panels 11 of the building unit 1,
Since the waterproof joint sheets 8 and 9 prevent rainwater from entering, the waterproof joint sheets 8 and 9 are highly waterproof.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the embodiment, the example applied to a two-story unit building is shown, but 3
It may be applied to unit buildings of multiple stories. In that case,
The horizontal roof unit may be provided above the building unit on the second floor or above the building unit on the floor above it.

[0035]

As described above, in the waterproof structure for a unit building of the present invention, not only the joint between the outer wall panels of the building unit but also the outer wall panel of the building unit and the horizontal roof unit are Rainwater does not infiltrate from the seam, and the effect is very high.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a waterproof structure of a unit building of an embodiment.

FIG. 2 is a development view of the waterproof joint sheet used in part A in FIG.

FIG. 3 is a perspective view showing a waterproof structure of a portion A in FIG. 1 in order of a construction procedure.

FIG. 4 is a perspective view showing a waterproof structure of a portion A in FIG. 1 in order of a construction procedure.

5 is a perspective view showing a waterproof structure of a portion A in FIG. 1 in order of a construction procedure.

FIG. 6 is a perspective view showing a waterproof structure of a portion A in FIG. 1 in order of a construction procedure.

FIG. 7 is a perspective view showing a waterproof structure of a portion A in FIG. 1 in order of a construction procedure.

FIG. 8 is a development view of the waterproof joint sheet used in part B in FIG.

FIG. 9 is a perspective view showing a waterproof joint sheet used in part B in FIG.

10 is a perspective view showing a waterproof structure of a portion B in FIG. 1 in order of a construction procedure.

FIG. 11 is a perspective view showing a waterproof structure of a portion B in FIG. 1 in order of a construction procedure.

FIG. 12 is a perspective view showing a waterproof structure of a portion B in FIG. 1 in order of a construction procedure.

FIG. 13 is a perspective view showing a waterproof structure of a portion B in FIG. 1 in order of a construction procedure.

FIG. 14 is a perspective view showing a waterproof structure of a portion B in FIG. 1 in order of a construction procedure.

[Explanation of symbols]

 1 Building unit 11 Exterior wall panel 2 Horizontal roof unit 4 Wall waterproof horizontal sheet 5 Wall waterproof vertical sheet 6 Roof waterproof lower sheet 7 Roof waterproof upper sheet 8, 9 Waterproof joint sheet

Claims (3)

[Claims] 1. A waterproof structure for a unit building having two or more floors, which comprises a lower floor portion formed by arranging a plurality of building units side by side and an upper floor portion formed by arranging a building unit and a horizontal roof unit side by side. In the structure, a horizontal wall waterproof sheet is provided at the joint between the outer wall panels of vertically adjacent building units to close the joint, and at the joint between the outer wall panels of adjacent building units on the left and right. The wall waterproof vertical sheet is installed to close the roof, and the roof waterproof lower sheet is installed to close the seam at the joint between the lower edge of the horizontal roof unit and the outer wall panel of the building unit on the lower floor. At the seam between the upper edge and the outer wall panel of the building unit on the upper floor, a roof waterproof top sheet is provided to close the seam, and the horizontal roof unit and the outer wall panel of the building unit. A waterproof structure for a unit building, characterized in that a waterproof joint sheet is provided at an intersection of a seam between them and a seam between outer wall panels of a building unit in superposition with each sheet in the vicinity of the intersection. . 2. A waterproof joint sheet is a roof waterproof lower sheet, a roof waterproof upper sheet, and a wall waterproof horizontal sheet in a portion where a corner of a horizontal roof unit and an outer corner of an outer wall panel surface of a building unit are arranged close to each other. The waterproof structure for a unit building according to claim 1, wherein the waterproof structure is provided so as to overlap each other. 3. The waterproof joint sheet comprises a roof waterproof lower sheet, a roof waterproof upper sheet, and a wall waterproof horizontal sheet at a portion where a corner of the horizontal roof unit and a joint between outer wall panel surfaces of the building unit are arranged in proximity to each other. The waterproof structure for a unit building according to claim 1, wherein the waterproof structure is provided so as to overlap with a vertical wall waterproof sheet.