JPH11223027A - Repairing construction of alc external wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide repairing construction of an ALC external wall having sufficient mounting strength of a new dry walling without imposing any burden (load) on the ALC external wall. SOLUTION: A through-hole C is formed in a position on which substrate material A of the existing ALC external wall B is placed, and a joint substrate material D is inserted into the through-hole C. One end of the joint substrate material D is fixed to the existing substrate A, a gap between the through-hole C and joint substrate material D is closed with a cover member F borne on the joint substrate material D, the other end of the joint substrate material D is projected to the surface of the ALC external wall B, furring strips E arranged to the surface of the ALC external wall B are fixed, and a new dry walling G is fixed to the furring strips E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building and a building
The present invention relates to a structure for repairing an existing outer wall made of C member (lightweight cellular concrete) with a new outer wall. More specifically, the connection base material for attaching a new drywall material is an export beam structure that is directly fixed to the building frame (base material) without applying a load (load) to the ALC outer wall, The present invention relates to a repair structure of an ALC outer wall which does not damage an outer wall and has a sufficient installation strength of a new dry wall material.

[0002]

2. Description of the Related Art Conventionally, the renovation of an outer wall using an ALC member has been carried out by removing all the old ALC outer walls and forming a new outer wall on a wall base material such as an existing frame or a rim. A new dry wall material is directly in contact with the outer wall surface of the ALC, and the dry wall material is fixed to the ALC using a fixture such as a concrete anchor.
A structure modified by using the LC outer wall itself as a wall base material is generally known.

[0003]

However, as described above, all of the old ALC outer walls that have become old have been removed,
In the structure where the new outer wall is formed on the existing base material such as the frame and the rim, there is a problem in increasing the cost for removal and disposal of the removed waste material, and there is no outer wall during construction,
During the construction period, there was a problem that it became impossible to live or work in the building or use the inside of the building.

Further, in a structure in which an ALC outer wall is used as a wall base material as it is and a new wall material is constructed, the old ALC outer wall is cracked, partially dropped, and deteriorated in strength due to frost damage and aging due to its properties. The use of this as a wall base has a problem with the strength of the new wall material that has been installed, and has the risk of falling off or peeling off due to external impacts such as typhoons and earthquakes. . Furthermore, the surface of the ALC outer wall has irregularities, and if the new outer wall is constructed as it is, it is difficult to adjust the unevenness due to the irregularities,
Irregularities also occurred on the new wall surface that had risen, and the appearance was inferior.

[0005]

According to the present invention, in order to eliminate such a drawback, a through hole is formed at a position where a base material of the existing ALC outer wall is provided, and a connecting base material is formed in the through hole. At the same time as inserting, one end of the connecting base material is fixed to the existing base material, the gap between the through hole and the connecting base material is closed by the cover material supported by the connecting base material, and the other end of the connecting base material is Projected to the surface of the ALC outer wall, the rim arranged on the surface of the ALC outer wall was fixed, and a new drywall material was fixed to the rim. The strength is assured, and the connection base material has a stretching function, so it can cope with the difference in the thickness of the ALC outer wall and adjust unevenness, so the aesthetics of the rising of the new dry wall material is improved, and furthermore, With the cover material supported (fixed) on the connecting base material, By closing the gap between the through-hole and the connecting base material, the waterproof, air-tight and heat-insulating properties lost by forming the through-hole can be replenished. The present invention proposes a repair structure of an ALC outer wall that can be repaired without applying any burden (load) to the ALC outer wall.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an ALC outer wall repairing structure according to an embodiment of the present invention. FIG. 1 is a perspective view showing a typical example of a repaired structure of the ALC outer wall, and FIG. 2 is an explanatory view showing a sectional view thereof.
Is a base material which is a base material for mounting the building frame and the ALC outer wall B, and is made of a horizontal member arranged in a horizontal direction as shown in the figure, and more specifically, an H-shaped steel material or a square steel material (not shown) , C-shaped steel (lip grooved steel), L-shaped angle material, grooved steel, etc.

[0007] B is an existing ALC outer wall, which is fixed to a base material A made of an H-shaped steel or the like with a bolt-nut α via an angle a and a Z clip b as shown in FIG. is there. FIG. 2 shows the mounting of a general vertical ALC outer wall B, and there are various other mounting methods of the ALC, and the present invention is not limited to this. Further, c is a filling joint material to be filled in a joint portion of the ALC outer wall B for vertical stretching, and further, a makeup is applied to a surface of the ALC outer wall B with a decorative covering member (paint or the like, not shown). Or something.

Reference numeral C denotes a through hole formed in the ALC outer wall B. The through hole is formed on the ALC outer wall B from the surface side of the ALC outer wall B by using a device such as a hole saw at a constant pitch along the arrangement position of the base material A. Is what you do. Further, the through hole C functions as a path for inserting the connecting base material D described later, and its shape and size are such that the connecting base material D can be easily filled. It is. In addition, by forming the through-hole C in the ALC outer wall B, the construction material A can be directly visually confirmed by the builder from the surface side of the ALC outer wall B, and the connection foundation material D to the foundation material A described later can be used. Installation is secure.

Reference numeral D denotes a connecting base material, which is inserted into a through hole C formed in the ALC outer wall B, and has one end fixed to the base material A and the other end fixed to a body edge E described later.
Is connected to the rim E as a mounting base for the new dry wall material F to prevent deterioration of the mounting strength of the dry wall material G. Also, the installation
The ALC outer wall B is mounted so that the through-hole C and the connecting base material D do not touch (do not abut) on the ALC outer wall B without any load. Further, the connection base material D also functions as a base for mounting the cover material F described later.

As an example of a specific shape of the connecting base material D, for example, as shown in a perspective view of FIG. 3A and a central sectional view of FIG. Outer member D
1 and an inner member D2.
Examples of the material include various steel materials having excellent strength, iron, stainless steel, aluminum, titanium, and various synthetic resins reinforced with fibers.

The outer member D1 is shown in FIGS. 4 (a) and 4 (b).
As shown in FIGS. 5A and 5B, the inner member D2 is a cylindrical body having a bottom, and the inner member D2 and the outer bottom 1
And screwed together with the inner bottom 2 outside. That is, a female screw groove 3 is formed on the inner peripheral surface on the opening side of the outer member D1, and a male screw groove 4 is formed on the outer peripheral surface of the inner member D2.

Further, at least one pilot hole 5 is formed in the outer bottom portion 1 of the outer member D1, and functions as a guide hole when a fixing tool β such as a hex, a tex, and a screw is driven. The number is arbitrarily set according to the required mounting strength. Of course, the base material A of the outer member D1
In addition to using the fixing tool β,
It is also possible to attach by welding, or to attach firmly separately with an adhesive.

At the center of the inner bottom portion 2 of the inner member D2, a tool engagement hole 6 is formed, which is used for screwing the inner member D2 to the outer member D1. For inserting the inner member D2 and the outer member D1 with each other.

As described above, since the outer member D1 and the inner member D2 are screwed together and integrated as the connecting base material D, the connecting base material D is provided with a function of expanding and contracting the length. Even if the thickness of the ALC outer wall material B is different, it is possible to cope with the thickness of the ALC outer wall material B to a certain extent, and the unevenness of the ground material A can be easily adjusted.

F is a cover material, for example, as shown in FIG.
As shown in (b), a circular hollow portion 7 having the same diameter as the outer periphery of the inner member D1 is formed inside, and a circular tongue 8 protruding wider than the diameter of the through hole C is formed. . Further, a locking screw groove 9 is formed on the inner peripheral surface of the circular hollow portion 7, and a packing material 10 is integrally attached to one side of the circular tongue 8.

The cover material F is made of the same material as the connection base material D except for the packing material 10. The packing material 10 is made of, for example, polyvinyl chloride, chloroprene, or chlorosulfonated polyethylene. System, ethylene propylene system, those having elasticity such as asphalt-impregnated polyurethane system, or polybutene system,
Polypropylene, butyl, rubber asphalt, E
One of the elastic or inelastic fixed packing materials such as PDM and the like, and the elastic one-component type is silicone-based, denatured silicone-based, polysulfide-based, polyurethane-based moisture-curing type, acrylic-based, SBR-based. Emulsion dry-curable, elastic two-component reactive-curable silicone-based, modified silicone-based, polysulfide-based, polyurethane-based, acrylic urethane-based, and non-elastic-based oil-based caulking, silicone-based irregular packing materials One type is used.

As shown in FIG. 1 and FIG.
It is mounted by screwing into the male screw groove 4 of the inner member D2 via the locking screw groove 9 formed in the circular hollow portion 7, and the puncturing material 10 is sufficiently attached to the surface of the ALC outer wall B. It is screwed until it comes into close contact with the base material D and fixed.

That is, the cover material F has the waterproofness, airtightness, and heat insulating property lost by forming the through-hole C in the ALC outer wall B, because the packing material 10 and the surface of the ALC outer wall B are in close contact with each other. Since it is intended to compensate and to support (fix) the connecting base material D,
It is not necessary to apply any load to the LC outer wall B.

Reference numeral E denotes a body edge, which is attached to the tip of a connection base material D protruding from the surface of the ALC outer wall B by welding or fixing means such as a fixing tool β as shown in FIGS. It functions as a mounting base for the dry wall material G described later. The outer edge B of the ALC outer wall B depends on its thickness.
And a dry wall material G, so that it can function as a flow passage for fresh air and the like, and can be used for corrosion prevention and the like.

FIG. 7 shows a specific example of the rim E. The flat steel 1 is attached to the head 12 of the hat-shaped steel 11.
3 is integrated by welding. Of course,
This is an example of the rim E. For example, a square steel (square pipe), a hat-shaped steel, a lip grooved steel, a grooved steel, a flat steel, or the like can be used as the rim E. As the material, various steel materials having excellent strength, iron plates, stainless steel plates, aluminum materials, wood, laminated materials, plastic composite materials, and the like can be used.

Further, the body edge E has a horizontal body edge E1 extending in the horizontal direction and a vertical body edge E2 extending in the vertical direction. The type of dry wall material G (vertical type, horizontal type) required as described later is required. It is arranged on the surface of the ALC outer wall B arbitrarily according to the pitch of the body edge E.

The overlapping portion between the horizontal torso edge E1 and the vertical torso edge E2 is on the same plane so that the distance between the ALC outer wall B and the dry wall material G does not increase (so as to prevent so-called dandruff). The connection is preferably performed in a shape as shown in FIG. 9 using, for example, a connection fitting H1 as shown in FIG. 8A, or using a connection fitting H2 as shown in FIG. 8B. It is preferred to perform as shown in FIG.

That is, the connection fitting H1 shown in FIG.
Is an angle-piece shape formed by bending the connecting tongue pieces 14 into an L-shape, and each connecting tongue piece 14 is formed with a pilot hole 15 serving as a positioning guide for the fixing tool β.

As shown in FIG. 9, the connecting bracket H1
The horizontal body edge E1 and the vertical body edge E2 are fixed from their side portions 16 to the fixing tool β.
Are fixed and connected, and at the intersections, the upper and lower, left and right, four connecting metal fittings H1 are used to firmly connect the body edge E.

The connecting bracket H2 shown in FIG. 8B is formed by cutting a square steel material (square pipe) into a short length.

As shown in FIG. 10, this connecting metal fitting H2 is inserted into the groove 17 of the vertical waist edge E2, and the lip 18 of the horizontal waist edge E1 and the side wall 16 of the vertical waist edge E2 are respectively fixed. By casting at β, the horizontal body edge E1 and the vertical body edge E2 are connected. In this case, it is possible to minimize dandruff caused by the head of the fixing tool β by setting the fixing tool β to be cast on the lip portion 18 of the horizontal body edge E1 in a pan-head or dish-head shape. It does not hinder the installation of the dry wall material G.

The new dry wall material G covers the surface of the old ALC outer wall B and forms a new wall surface.
It functions as a decorative material, a waterproofing material, a heat insulating material, a fireproofing material, and a fireproofing material. For example, a light metal panel or a metal siding material as shown in FIG. Various ceramic siding materials and the like are preferable.

That is, the dry wall material G shown in FIG. 11 is made of a sandwich plate material in which a core material 21 is sandwiched between a front material 19 and a back material 20.

When the front surface member 19 and the back surface member 20 are made of a thin metal plate, for example, iron, aluminum, copper, stainless steel,
Titanium, aluminum / zinc alloy plated steel sheets, galvalume steel sheets, enameled steel sheets, clad steel sheets, fluoroplastic steel sheets, laminated steel sheets (PVC steel sheets, etc.), sandwich steel sheets (damping steel sheets, etc.), (of course, these are painted in various colors) (Including a plate) is formed into a predetermined shape by extrusion molding, roll molding, and press molding.

When the front surface member 19 and the back surface member 20 are made of a synthetic resin plate, for example, a PVC resin, a polycarbonate resin or the like is formed into a predetermined shape by extrusion molding, press molding, roll molding or the like. Of course, a material obtained by laminating these metal plates and a synthetic resin plate may be used.

Further, particularly, the back material 20 is made of aluminum-evaporated paper, asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, hydroxide Aluminum paper,
It can also be formed from a laminate of one or two or more glass fiber nonwoven fabrics, or a sheet-like material subjected to a waterproof treatment and a flame-retardant treatment.

The core material 21 mainly functions as a heat insulating material, a fireproof material and a bulking material of the dry wall material G.
Synthetic resins such as polyisocyanurate, phenol, vinyl chloride, polyethylene, polystyrene, urea and their foams, or calcium silicate, calcium carbonate, inorganic materials such as aluminum hydroxide and their foams, or glass fibers, ceramic fibers, It is made of fibrous mats such as rock wool and asbestos, gypsum board and the like.

The integration of the core material 21 with the front surface material 19 and the back surface material 20 is performed, for example, by utilizing the self-adhesion when the core material 21 is a synthetic resin foam, and in other cases. It is laminated and sandwiched separately via an adhesive (not shown).

FIG. 11 shows a dry wall material G having a male connecting portion 22 formed at one end and a female connecting portion 23 formed at the other end. 24 is an example showing a general horizontal-type metal siding material formed with 24; In the drawing, a single soft sealing material 25 is interposed in the female connecting portion 23 to improve the waterproofness of the joint.

Further, the attachment of the dry wall material G is shown in FIGS.
As shown in FIG. 3, the male connecting portion 22 is fixed to the rim E by using a fixing tool β such as a tapping screw, a tex screw, a self-drilling screw screw, and the male connecting portion 22 and the female connecting portion 23 are connected to each other. , Are connected and attached by female fitting.

Here, a method of constructing the ALC outer wall repair structure according to the present invention will be briefly described. First, FIG.
As shown in the figure, ALC is applied to the ALC outer wall B at an arbitrary pitch along a disposition position of the base material A by using a machine such as a hole saw.
A through hole C is formed from the surface side of the C outer wall B. At this time, the pitch of the through holes C is horizontal pitch P = 600,
The pitches 900, 1200, 1500 mm and the vertical pitch L differ depending on the type of building, but are generally about 3500 mm high for one story.

Next, as shown in FIG. 13, the outer member D1 of the connecting base material D is inserted into the through hole C, and the outer bottom portion 1 is brought into contact with the base material A, that is, the web of the H-shaped steel material. 5 and attached by a fixing tool β. At this time, ALC outer wall B
So that no load is applied to the outer member D1.
Be careful not to touch.

Then, as shown in FIG. 14, the inner member D2 is screwed and attached to the outer member D1 while adjusting unevenness. At this time, if a tool 26 such as a screwdriver is inserted into the tool engagement hole 6 of the inner member D2 and rotated, the work becomes easier.

Next, as shown in FIG. 15, the circular hollow portion 7 of the cover member F is inserted into the distal end portion of the inner member D2 and rotated, and screwed until the packing member 10 comes into close contact with the surface of the ALC outer wall B. Then, the cover member F is attached to the inner member D2. At this time, care is taken so as not to overtighten the cover material F and damage the ALC outer wall B or apply an additional load (load) to the ALC outer wall.

Next, as shown in FIG. 16, the groove portion 17 of the elongated lateral body edge E1 is fixed via the fixing member β. And
As shown in FIG. 17, the vertical torso edge E2 is connected to the connecting brackets H1 and H2.
And is fixed to the horizontal trunk edge E1 at intervals of the pitch P1. The pitch P2 at this time is the dry wall material G to be attached.
Is determined according to the pitch of the waist edge E required and the wind pressure resistance depending on the height above the ground.
0, 1200, 1500, and 2000 mm.

Finally, as shown in FIG. 1, the horizontal wall type dry wall material G is attached to the lip portion 18 of the vertical waist edge E2 by using a fixing tool β to complete the repair. Of course, although not shown, a draining material, a start material, a rim material, a corner material, a corner material, an opening member, etc., and various other materials such as a sealing material are formed as necessary to form a new outer wall surface. It is.

Although the above is an embodiment of the ALC outer wall repair structure according to the present invention, a structure using members as shown in FIGS. 18 to 27 may be employed.

18 (a) and 18 (b) show another example of the connection base material D. FIG. 18 (a) shows a state where the middle of the male screw groove 4 of the inner member D2 is flattened. Flat part 2
FIG. 18B shows an example in which the outer bottom portion 1 of the outer member D1 is formed.
This shows an example of a connection base material D in which an adhesive member 28 is attached in advance on the outer surface as a function of improving adhesion to the base material A and a function of temporarily fixing at the time of attachment.

FIGS. 19 to 21 show other examples of the cover material F. FIG. 19A shows the locking screw groove 9 formed inside, which is shown in FIG. 19B. As shown in the cross-sectional view, the tip of the connecting base material D does not protrude much from the surface of the ALC outer wall B, and is useful for making a structure capable of preventing dandruff as much as possible.

FIG. 20 (a) shows the circular tongue piece 8 itself formed from the same material as the puncturing material 10.
Thereby, the cover material F can be formed thin.
FIG. 20B shows an example in which an intermediate tongue piece 29 serving as a guide for insertion into the through-hole C is formed in the middle of the circular tongue piece 8. FIG. 21 shows a case in which a sealing material of an indefinite shape is used as the packing material 10, and this is one in which the sealing material is adhered to the circular tongue piece 8 at the construction site.

FIGS. 22 (a) to 22 (c) show an example of deformation of the cross-sectional shape of the body edge E. FIG. 22 (a) shows one member bent by roll forming to form a predetermined shape. FIG. FIG. 22B is an example of a body edge E formed by integrating two U-shaped grooved steel members 30 and a flat steel member 13 by welding to form a predetermined shape. FIG.
(C) is an example of the rim E made of only the hat-shaped steel material 11.

FIGS. 23 (a) to 23 (d) to 26 are cross-sectional views showing other examples of the dry wall material G. FIGS.
(D) is an example of a dry wall material G which is a drop-down type and is mainly used for horizontal stretching, and FIGS. 24 (a) to (c) are examples of a dry wall material G which is a plug-in type and mainly used for vertical stretching. .

The dry wall material G shown in FIGS. 25 (a) to 25 (c)
FIG. 25B is a cross-sectional view showing an example of a large-sized double-sided metal sandwich panel. In particular, FIG. 25B shows a male connection portion 22 in which a fire-resistant packing material 31 having waterproofness and fire resistance is provided, and a female connection portion. This is an example in which waterproof sealing materials 32 are interposed in 23 to improve the waterproofness and fire resistance of the joint joint.

Further, the dry wall material G shown in FIG.
Is an example in which a non-combustible member 33 arbitrarily formed so as to conform to the shapes of the male connecting portion 22 and the female connecting portion 23 is mounted in each connecting portion, and the non-combustible member 33 is formed by dry wall materials G. In addition, since the joint joints are provided with improved fire resistance and fire resistance, and are filled at the ends of the male joint 22 and the female joint 23, the core material 21 at the end of the dry wall material G is provided. Of the core material 21 and the foamability and spreadability of the core material 21 are also improved. The non-combustible member 33 is made of one or more non-combustible members such as a calcium silicate plate, a high-density phenol resin plate, a wool cement plate, a rock wool plate, and an aluminum hydroxide plate.

The dry wall material G shown in FIG. 26 is an example of a box-type sandwich panel in which the surface material 19 is formed in a square or rectangular shape.

FIG. 27 shows an example of the mounting arrangement of the body edge E when the dry wall material G is of the vertical type. Body edge E1
Is attached, the horizontal torso edge E1 functions as a base for the dry wall material G.

[0052]

As described above, according to the ALC according to the present invention,
According to the renovation structure of the outer wall, it is not necessary to dismantle the existing ALC outer wall, so that the number of construction steps can be reduced, the construction period can be significantly reduced, and there is no hindrance to living and use during construction. Absent. Since the new outer wall is formed on the existing ALC outer wall, the construction is easy and the cost can be saved. It has a double wall structure of the existing ALC outer wall and a new dry wall material, and has a structure with excellent heat insulation, soundproofing, and fireproofing properties.
By forming through-holes in the ALC outer wall, the installer can directly check the underlaying material directly from the surface side of the ALC outer wall, and the attachment of the connecting underlaying material to the underlaying material is ensured. The mounting strength does not deteriorate. By making the connecting base material two members and having the expansion and contraction function, the unevenness of the base material can be easily adjusted, the construction is facilitated, and the aesthetics of the dry wall material rising is improved. Since the connecting base material is a take-out beam structure, it does not touch the through hole or the existing ALC outer wall at all, so it can be repaired without applying any load (load) to the existing ALC outer wall, and a new dry wall material can be installed The strength is sufficient and the outer wall of the ALC is not damaged. With the cover material supported (fixed) on the connecting base material,
By closing the gap between the through-hole and the connection base material, the waterproof, air-tight and heat-insulating properties lost by forming the through-hole can be replenished, and the cover material is fixed to the connection base material, so the existing Do not apply any burden (load) to the ALC outer wall. There are features and effects such as.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a typical example of a repair structure of an ALC outer wall according to the present invention.

FIG. 2 is an explanatory view showing a typical example of a repair structure of an ALC outer wall according to the present invention.

FIG. 3 is an explanatory view showing an example of a connection base material used in the present invention.

FIG. 4 is an explanatory view showing an example of an outer member constituting a connecting base material.

FIG. 5 is an explanatory view showing an example of an inner member constituting a connecting base material.

FIG. 6 is an explanatory diagram showing an example of a cover material.

FIG. 7 is an explanatory diagram showing an example of a body edge.

FIG. 8 is an explanatory view showing an example of a connection fitting.

FIG. 9 is an explanatory diagram illustrating an example of connection between a horizontal trunk edge and a vertical trunk edge.

FIG. 10 is an explanatory diagram showing an example of connection between a horizontal trunk edge and a vertical trunk edge.

FIG. 11 is an explanatory view showing an example of a dry wall material.

FIG. 12 is an explanatory view showing an example of a construction procedure of a repair structure for an ALC outer wall according to the present invention.

FIG. 13 is an explanatory view showing an example of a construction procedure of the ALC outer wall repair structure according to the present invention.

FIG. 14 is an explanatory diagram showing an example of a construction procedure of a repair structure for an ALC outer wall according to the present invention.

FIG. 15 is an explanatory view showing an example of a construction procedure of the ALC outer wall repair structure according to the present invention.

FIG. 16 is an explanatory diagram showing an example of a construction procedure of a repair structure of an ALC outer wall according to the present invention.

FIG. 17 is an explanatory diagram showing an example of a construction procedure of a repair structure for an ALC outer wall according to the present invention.

FIG. 18 is an explanatory view showing another example of the connection base material.

FIG. 19 is an explanatory view showing another example of the cover material.

FIG. 20 is an explanatory diagram showing another example of the cover material.

FIG. 21 is an explanatory diagram showing another example of the cover material.

FIG. 22 is an explanatory view showing another example of the body edge.

FIG. 23 is an explanatory view showing another example of the dry wall material.

FIG. 24 is an explanatory view showing another example of the dry wall material.

FIG. 25 is an explanatory view showing another example of the dry wall material.

FIG. 26 is an explanatory view showing another example of the dry wall material.

FIG. 27 is an explanatory view showing another example of the mounting arrangement of the body edge.

[Explanation of symbols]

 α Bolt-nut β Fixture a Angle b Z clip c Filling joint material A Base material B ALC outer wall C Through hole D Connecting base material D1 External member D2 Inner member E Body edge E1 Horizontal body edge E2 Vertical body edge F Cover material G Dry wall material H1 Connection fitting H2 Connection fitting 1 Outer bottom 2 Inner bottom 3 Female screw groove 4 Male screw groove 5 Lower hole 6 Tool locking hole 7 Circular hollow portion 8 Circular tongue 9 Lock screw groove 10 Packing material 11 Hat type Steel material 12 Head 13 Flat steel material 14 Connecting tongue piece 15 Prepared hole 16 Side surface portion 17 Groove portion 18 Lip portion 19 Surface material 20 Back material 21 Core material 22 Male connection portion 23 Female connection portion 24 Decorative rib 25 Seal material 26 Tool 27 Flat part 28 Adhesive member 29 Intermediate tongue piece 30 Channel steel material 31 Fireproof packing material 32 Waterproof sealing material 33 Non-combustible member

Claims (1)

[Claims] 1. A through hole is provided in an existing ALC outer wall,
A connecting base material is inserted into the through hole, and one end of the connecting base material is fixed to a base material to which an existing ALC outer wall is attached, and the other end is connected to a body edge provided on the surface of the ALC outer wall. An ALC outer wall, wherein the ALC outer wall is fixed and is closed by a cover material supporting the gap between the through hole and the connecting base material by the connecting base material, and a new dry wall material is fixed to the body edge. Renovation structure.