JP4033415B2 - ALC exterior wall retrofit structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for repairing an existing outer wall surface made of an ALC member (lightweight cellular concrete) of a building or a structure with a new outer wall. More specifically, the connecting base material for attaching a new dry-type wall material is a take-out 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 that does not damage the outer wall and that also has a sufficient mounting strength for a new dry-type wall material.
[0002]
[Prior art]
Conventionally, renovation of outer walls using ALC members has been done by removing all existing ALC outer walls and forming new outer walls on existing base materials such as housings and trunk edges, or directly on the ALC outer wall surface. A structure in which a new dry wall material is brought into contact, the dry wall material is repaired by using a fixture such as a concrete anchor, and the ALC outer wall itself is used as a wall base material is generally known.
[0003]
[Problems to be solved by the invention]
However, in the structure in which all the existing ALC outer walls that have become old as described above are removed, and new outer walls are formed on the wall base material such as the existing housing and trunk edge, the cost for removal and the removed waste materials are removed. In addition, there is a problem in the processing, and there is no outer wall during the construction, and there is a problem that it becomes impossible to live in the building or work or use the inside of the building during the construction period.
[0004]
In addition, in the structure in which the ALC outer wall is directly used as a wall base material 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 changes over time due to its properties. However, using this as a wall base has a problem in the mounting strength of the attached new wall material, and it has a risk of falling off or peeling off due to an external impact such as a typhoon or an earthquake. Furthermore, the surface of the ALC outer wall has irregularities, and if a new outer wall is constructed as it is, it is difficult to adjust the unevenness due to the irregularities, and irregularities are also generated on the new wall surface, which is inferior in aesthetics.
[0005]
[Means for Solving the Problems]
In order to eliminate such drawbacks, the present invention forms a through hole at a position where the base material of the existing ALC outer wall is disposed, inserts a connecting base material into the through hole, and also connects one end of the connecting base material. The part is fixed to the existing base material, the gap between the through hole and the connection base material is closed with a cover material supported by the connection base material, and the other end of the connection base material is protruded from the surface of the ALC outer wall. The body edge is fixed on the surface, and a new dry-type wall material is fixed to the edge of the body. Because it has an expansion and contraction function, it is possible to cope with differences in the thickness of the ALC outer wall and adjust the unevenness, so that the aesthetics of the new dry wall material can be improved, and it is supported (fixed) to the connecting base material. Cover the gap between the through hole and the connecting base material. Sealing and forming through-holes can replenish the waterproofness, airtightness, and heat insulation that were lost, and the connecting base material is used as a take-out beam structure for any burden (load) on the existing ALC outer wall. It proposes a repair structure of the ALC outer wall that can be repaired without applying.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the repair structure of the ALC outer wall according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a typical example of the above-described repair structure of the ALC outer wall, FIG. 2 is an explanatory view showing a cross-sectional view thereof, A is a base material to be a mounting base of the building frame and the ALC outer wall B, It consists of horizontal members arranged in the horizontal direction as shown in the figure. More specifically, it is H-type steel, or although not shown, square steel, C-type steel (lip groove type steel), L-shaped angle material, groove It consists of a steel base material such as a steel mold.
[0007]
B is an existing ALC outer wall, and as shown in FIG. 2, is fixed to a base material A made of an H-shaped steel material or the like with bolts and nuts α via angles a and Z clips b. FIG. 2 shows attachment of a general vertical ALC outer wall B, and there are various ways of attaching ALC, and the present invention is not limited to this. Further, c is a filling joint material filled in the joint portion of the ALC outer wall B for vertical tension, and further, makeup is applied on the surface of the ALC outer wall B with a makeup covering member (paint, etc., not shown). It is something to do.
[0008]
C is a through-hole formed in the ALC outer wall B, and is formed from the surface side of the ALC outer wall B by using a device such as a hole saw at a constant pitch on the ALC outer wall B along the arrangement position of the base material A. is there. Further, the through-hole C functions as a path for inserting a connecting base material D, which will be described later, and its shape and size are such that the connecting base material D can be easily filled, and any if it is attached to the base material A It is. In addition, by forming the through-hole C in the ALC outer wall B, the installer can directly check the base material A from the surface side of the ALC outer wall B, and the connection base material D to be described later can be applied to the base material A. Installation is reliable.
[0009]
D is a connecting base material, which is inserted into a through-hole C formed in the ALC outer wall B, one end of which is fixed to the base material A, and the other end is fixed to a trunk edge E which will be described later. The material A and the trunk edge E which is the attachment base of the new dry wall material F are connected to prevent the deterioration of the attachment strength of the dry wall material G. In addition, the attachment is made so that the through-hole C and the connecting base material D do not touch (not contact), and the ALC outer wall B is attached so as not to apply any load (load). Further, the connecting base material D also functions as a mounting base for the cover material F described later.
[0010]
As an example of a specific shape of the connecting base material D, for example, as shown in FIG. 3B corresponding to a perspective view of FIG. 3A and a central sectional view of FIG. And the inner member D2 are composed of various steel materials having excellent strength, iron, stainless steel, aluminum, titanium, various synthetic resins reinforced with fibers, and the like. .
[0011]
Further, as shown in FIGS. 4A and 4B and the inner member D2 as shown in FIGS. 5A and 5B, the outer member D1 is a bottomed cylindrical body, and both are outer bottom portions. 1 and the inner bottom 2 are externally screwed together. That is, the female thread groove 3 is formed on the inner peripheral surface on the opening side of the outer member D1, and the male thread groove 4 is formed on the outer peripheral surface of the inner member D2.
[0012]
Further, one or more pilot holes 5 are formed in the outer bottom portion 1 of the outer member D1, and function as a guide hole when a fixture β such as a hex, a tex, or a screw screw is placed. The number is arbitrarily set according to the required mounting strength. Of course, as a fixing means of the base material A of the outer member D1, besides using the fixing tool β, it is possible to directly attach it by welding or to attach it firmly through an adhesive.
[0013]
A tool locking hole 6 is formed in the central portion of the inner bottom portion 2 of the inner member D2, and this inserts the tip of a tool such as a screwdriver when the inner member D2 is screwed to the outer member D1. For this purpose, the screw connection between the inner member D2 and the outer member D1 is facilitated.
[0014]
In this way, the outer member D1 and the inner member D2 are screw-coupled and integrated as a connecting base material D, so that the connecting base material D is provided with a length expansion / contraction function, so that one connection Even if the thickness of the ALC outer wall material B is different depending on the base material D, it is possible to cope to some extent, and the unevenness adjustment of the base material A can be easily performed.
[0015]
F is a cover material. For example, as shown in FIGS. 6A and 6B, a circular hollow portion 7 having the same diameter as the outer periphery of the inner member D1 is formed inside, and wider than the diameter of the through hole C. The circular tongue piece 8 is formed so as to protrude into the shape. 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 piece 8.
[0016]
The cover material F is made of the same material as the connecting base material D except for the packing material 10, and the packing material 10 is made of, for example, polyvinyl chloride, chloroprene, chlorosulfonated polyethylene, ethylene, or the like. One having elastic properties such as propylene-based, asphalt-impregnated polyurethane-based, polybudene-based, polypropylene-based, butyl-based, rubber asphalt-based, EPDM, etc., or inelastic-type fixed packing material, or elastic type One-component system is silicone-based, modified silicone-based, polysulfide-based, polyurethane-based moisture-curing type, acrylic-based, SBR-based emulsion dry-curing type, elastic two-component system is silicone-based, modified silicone-based, polysulfide-based, Reaction of polyurethane and acrylic urethane Reduction type, non-elastic is to use one oily caulking, irregular packing materials silicone or the like.
[0017]
As shown in FIGS. 1 and 2, the cover material F is mounted by being screw-coupled to the male screw groove 4 of the inner member D <b> 2 through the locking screw groove 9 formed in the circular hollow portion 7. It is screwed until the puncturing material 10 is sufficiently adhered to the surface of the ALC outer wall B, and is locked to the connecting base material D to be fixed.
[0018]
That is, the cover material F compensates for the waterproofness, airtightness, and heat insulation properties lost by forming the through-hole C in the ALC outer wall B by the close contact between the packing material 10 and the surface of the ALC outer wall B. In addition, since the support (fixation) is the connection base material D, no load is applied to the ALC outer wall B.
[0019]
E is a body edge, and is attached to the tip of the connecting base material D protruding from the surface of the ALC outer wall B as shown in FIGS. 1 and 2 by fixing means such as welding and fixture β. It functions as an attachment base for the wall material G. Further, the trunk edge E has a space between the ALC outer wall B and the dry wall material G depending on the thickness thereof, and can function as a flow path for fresh air or the like, and can be used for corrosion prevention or the like.
[0020]
As a specific example of the trunk edge E, for example, as shown in FIG. 7, a flat steel material 13 is attached to the head 12 of the hat-type steel material 11 by welding and integrated. Of course, this is an example of the trunk edge E. For example, a square steel material (square pipe), a hat type steel material, a lip groove type steel material, a groove type steel material, a flat type steel material or the like can be used as the trunk edge 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.
[0021]
Furthermore, the trunk edge E has a horizontal trunk edge E1 extending in the horizontal direction and a vertical trunk edge E2 extending in the vertical direction, and the types of dry wall materials G (vertical type, horizontal type) to be described later, and necessary trunk edges. It is arbitrarily arranged on the surface of the ALC outer wall B by the pitch of E.
[0022]
In addition, the overlapping portion of the horizontal trunk edge E1 and the vertical trunk edge E2 is the same plane so that the distance between the ALC outer wall B and the dry wall material G does not become long (so that there is no dandruff). For example, the connection is performed as shown in FIG. 9 using a connection fitting H1 as shown in FIG. 8A, or as shown in FIG. 10 using a connection fitting H2 as shown in FIG. 8B. It is preferable to do so.
[0023]
That is, the connecting fitting H1 shown in FIG. 8A has an angle piece shape formed by bending the connecting tongue pieces 14 to each other, and each connecting tongue piece 14 has a lower position serving as a positioning guide for the fixture β. A hole 15 is formed.
[0024]
As shown in FIG. 9, the connecting metal fitting H1 connects the horizontal trunk edge E1 and the vertical trunk edge E2 by placing the fixing tool β from the side surface portion 16 and fixing it. A total of four connecting fittings H1 on the left and right sides are used to firmly connect the trunk edge E.
[0025]
8B is formed by cutting a square steel material (square pipe) into short pieces.
[0026]
As shown in FIG. 10, the connecting metal fitting H2 is inserted into the groove portion 17 of the vertical trunk edge E2, and the lip portion 18 of the horizontal trunk edge E1 and the side face portion 16 of the vertical trunk edge E2 are respectively fixed by the fixture β. By placing, the horizontal trunk edge E1 and the vertical trunk edge E2 are connected. In this case, it is possible to minimize the dandruff caused by the head of the fixing device β by making the fixing device β to be placed on the lip portion 18 of the horizontal trunk edge E1 into a pan head or a dish head shape. It is possible to prevent the installation of the dry wall material G.
[0027]
The new dry wall material G covers the surface of the old ALC outer wall B and forms a new wall surface. It mainly functions as a decorative material, waterproofing material, heat insulating material, fireproofing material, and fireproofing material. In order not to place a burden on the existing base material A, for example, a lightweight metal panel, a metal siding material, various ceramic siding materials and the like as shown in FIG. 11 are preferable.
[0028]
That is, the dry wall material G shown in FIG. 11 is made of a sandwich plate material in which the core material 21 is sandwiched between the front surface material 19 and the back surface material 20.
[0029]
When the surface material 19 and the back material 20 are made of a thin metal plate, for example, iron, aluminum, copper, stainless steel, titanium, aluminum / zinc alloy plated steel plate, galbarium steel plate, enamel steel plate, clad steel plate, fluororesin steel plate, laminated steel plate (vinyl chloride) Steel plates, etc.), sandwich steel plates (damping steel plates, etc.), and (of course, including color plates coated with various colors) are formed into a predetermined shape by extrusion molding, roll molding, press molding.
[0030]
Further, when the surface material 19 and the back surface material 20 are made of a synthetic resin plate, for example, a vinyl 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, the metal plate and the synthetic resin plate may be laminated and combined.
[0031]
Further, particularly the back material 20 is aluminum vapor-deposited paper, asbestos paper, craft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, It can also be formed from a laminate of one or two or more glass fiber nonwoven fabrics, or a sheet-like material that has been subjected to a waterproof treatment or a flame retardant treatment.
[0032]
The core material 21 mainly functions as a heat insulating material, a fireproofing material, and a bulking material of the dry-type wall material G, and a synthetic resin such as polyurethane, polyisocyanurate, phenol, vinyl chloride, polyethylene, polystyrene, urea, and its foam. Or an inorganic material such as calcium silicate, calcium carbonate, aluminum hydroxide, or a foam thereof, or a fiber mat such as glass fiber, ceramic fiber, rock wool, asbestos, gypsum board, or the like.
[0033]
Further, the integration of the core material 21 with the surface material 19 and the back surface material 20 uses, for example, the self-adhesiveness when the core material 21 is a synthetic resin foam, and otherwise separate adhesive. (Not shown) are laminated together and sandwiched.
[0034]
Further, FIG. 11 shows a phased shape in which a male connecting portion 22 is formed on one end of the dry wall material G and a female connecting portion 23 is formed on the other end, and a concave decorative rib 24 is formed on the surface material 19. It is an example which shows a general horizontal type metal siding material. In the figure, a single soft sealing material 25 is interposed in the female connecting portion 23 to improve the waterproofness of the joint portion.
[0035]
Further, as shown in FIGS. 1 and 2, the dry wall member G is fixed to the body edge E by using a fixing tool β such as a tapping screw, a tex screw or a self-drilling screw screw. The male connecting part 22 and the female connecting part 23 are connected and attached by male and female fitting.
[0036]
Here, the construction method of the repair structure of the ALC outer wall according to the present invention will be briefly described. First, as shown in FIG. 12, the through-hole C is formed from the surface side of the ALC outer wall B using a device such as a hole saw at an arbitrary pitch on the ALC outer wall B along the position where the base material A is disposed. At this time, as the pitch of the through holes C, the horizontal pitch P = 600, 900, 1200, about 1500 mm, and the vertical pitch L varies depending on the type of building, but is generally the height of one layer. It is about 3500 mm.
[0037]
Next, as shown in FIG. 13, the outer member D1 of the connecting base material D is inserted into the through hole C, the outer bottom portion 1 is brought into contact with the web of the H-shaped steel material as the base material A, and the lower hole 5 is interposed therebetween. And attach with the fixture β. At this time, care should be taken that the outer periphery of the outer member D1 does not touch the through hole C so as not to apply a load to the ALC outer wall B.
[0038]
Then, as shown in FIG. 14, the inner member D2 is screwed and attached to the outer member D1 while adjusting the unevenness. At this time, if a tool 26 such as a screwdriver is inserted into the tool locking hole 6 of the inner member D2 and rotated, the operation becomes easier.
[0039]
Next, as shown in FIG. 15, the circular hollow portion 7 of the cover material F is inserted into the distal end portion of the inner member D <b> 2, rotated, and screw-bonded until the packing material 10 is in close contact with the surface of the ALC outer wall B. F is attached to the inner member D2. At this time, care should be taken not to damage the ALC outer wall B by excessively tightening the cover material F or to apply (load) the ALC outer wall.
[0040]
Next, as shown in FIG. 16, the groove portion 17 of the long horizontal trunk edge E <b> 1 is fixed via a fixture β. And as shown in FIG. 17, the vertical trunk edge E2 is fixed to the horizontal trunk edge E1 at intervals of the pitch P1, using the connecting metal fittings H1 and H2. The pitch P2 at this time is determined by the necessary pitch of the trunk edge E of the dry wall material G to be attached, the wind pressure strength due to the ground height, and the like, for example, 600, 900, 1200, 1500, 2000 mm, etc. .
[0041]
Finally, as shown in FIG. 1, a horizontal type dry wall material G is attached to the lip portion 18 of the vertical trunk edge E2 by using a fixture β, and the repair is completed. Of course, although not shown, a new outer wall surface is formed by constructing various drainage materials, starting materials, stiffener materials, cornering materials, cornering materials, opening members, and other various objects and sealing materials as necessary. It is.
[0042]
The above is an example of the repair structure of the ALC outer wall according to the present invention, but a structure using members as shown in FIGS.
[0043]
18A and 18B show other examples of the connecting base material D, and FIG. 18A shows a flat portion 27 in which the middle of the male screw groove 4 of the inner member D2 is flattened. In FIG. 18B, an adhesive member 28 is attached in advance to the outer surface of the outer bottom portion 1 of the outer member D1 as a function of improving adhesion with the base material A and temporarily fixing the attachment. The example of the connection base material D is shown.
[0044]
FIGS. 19 to 21 show other examples of the cover material F, and FIG. 19 (a) shows a locking screw groove 9 formed inside, which is a cross-sectional view of FIG. 19 (b). As shown in FIG. 4, it is useful for making the structure where the tip of the connecting base material D does not protrude so much from the surface of the ALC outer wall B so that dandruff can be prevented as much as possible.
[0045]
In FIG. 20A, the circular tongue piece 8 itself is formed from the same material as that of the puncturing material 10, whereby 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 an example in which an indeterminate sealing material is used as the packing material 10, and the sealing material is attached to the circular tongue piece 8 at the construction site.
[0046]
22A to 22C show an example of deformation of the cross-sectional shape of the trunk edge E. FIG. 22A shows a trunk edge formed by bending one member into a predetermined shape by roll forming. This is an example of E. FIG. 22B is an example of a trunk edge E formed by integrating two U-shaped groove steel members 30 and a flat steel member 13 by welding to form a predetermined shape. FIG. 22C is an example of the trunk edge E made only of the hat-shaped steel material 11.
[0047]
23 (a) to 23 (d) to 26 are cross-sectional views showing other examples of the dry-type wall material G. FIGS. 23 (a) to 23 (d) are drop-types, which are mainly used for horizontal stretching. Examples of the wall material G, FIGS. 24A to 24C, are examples of the dry wall material G that is a plug-in type and is mainly used for vertical stretching.
[0048]
The dry wall material G shown in FIGS. 25A to 25C is a cross-sectional view showing an example of a large double-sided metal sandwich panel. In particular, FIG. This is an example in which the waterproof and fireproof properties of the joint joints are improved by interposing the fireproof packing material 31 having fire resistance and the waterproof sealing material 32 in the female connecting part 23, respectively.
[0049]
Furthermore, the dry-type wall material G shown in FIG. 25B is an example in which incombustible members 33 arbitrarily formed so as to match the shapes of the male connecting portion 22 and the female connecting portion 23 are mounted in each connecting portion. The non-combustible member 33 improves the fire resistance and fire resistance of the connection joint formed by the dry wall materials G, and fills the end portions of the male connection portion 22 and the female connection portion 23. Therefore, the lack of the core material 21 at the end of the dry wall material G is prevented, and the foamability and spreadability of the core material 21 are also improved. The incombustible member 33 is composed of one or more incombustible members such as a calcium silicate plate, a high density phenol resin plate, a wood cement plate, a rock wool plate, and an aluminum hydroxide plate.
[0050]
A 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 shape or a rectangular shape.
[0051]
FIG. 27 shows an example of the mounting arrangement of the trunk edge E when the dry-type wall material G is a vertical type. In this case, the horizontal trunk edge E1 is arranged at a desired arbitrary pitch between the vertical trunk edges E2. The horizontal trunk edge E1 functions as a base of the dry wall material G.
[0052]
【The invention's effect】
As described above, according to the repair structure of the ALC outer wall according to the present invention, (1) since it is not necessary to dismantle the existing ALC outer wall, the construction man-hour can be omitted, and the construction period can be greatly shortened. Moreover, there will be no hindrance to residence and use during construction. (2) Since a new outer wall is formed on the existing ALC outer wall, construction is easy and cost can be saved. (3) A double wall structure consisting of an existing ALC outer wall and a new dry-type wall material, and a structure rich in heat insulation, soundproofing and fireproofing. (4) By forming a through-hole in the outer wall of the ALC, the builder can directly check the base material from the surface side of the ALC outer wall, and the attachment of the connected base material to the base material is ensured. The installation strength of the dry wall material does not deteriorate. (5) By making the connecting base material into two members and having an expansion / contraction function, it is possible to easily adjust the unevenness of the base material, making the construction easier, and improving the aesthetics of the dry wall material. . (6) Since the connecting base material is a take-out beam structure, it does not touch any through-holes or existing ALC outer wall, so it can be repaired without applying any load (load) to the existing ALC outer wall. The mounting strength of the material is sufficient and the ALC outer wall is not damaged. (7) The cover material supported (fixed) on the connecting base material closes the gap between the through hole and the connecting base material, and replenishes the water resistance, airtightness, and heat insulation lost by forming the through hole. In addition, since the cover material is fixed to the connection base, no load (load) is applied to the existing ALC outer wall. There are features and effects.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a representative 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 connecting base material used in the present invention.
FIG. 4 is an explanatory view showing an example of an outer member constituting a connection base material.
FIG. 5 is an explanatory view showing an example of an inner member constituting a connection base material.
FIG. 6 is an explanatory view showing an example of a cover material.
FIG. 7 is an explanatory view showing an example of a trunk edge.
FIG. 8 is an explanatory view showing an example of a connecting metal fitting.
FIG. 9 is an explanatory view showing an example of connection between a horizontal trunk edge and a vertical trunk edge.
FIG. 10 is an explanatory view 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 the repair structure of the ALC outer wall according to the present invention.
FIG. 13 is an explanatory view showing an example of a construction procedure of the repair structure of the ALC outer wall according to the present invention.
FIG. 14 is an explanatory diagram showing an example of a construction procedure of the repair structure of the ALC outer wall according to the present invention.
FIG. 15 is an explanatory diagram showing an example of a construction procedure for the repair structure of the ALC outer wall according to the present invention.
FIG. 16 is an explanatory view showing an example of a construction procedure for the repair structure of the ALC outer wall according to the present invention.
FIG. 17 is an explanatory diagram showing an example of a construction procedure for the repair structure of the ALC outer wall according to the present invention.
FIG. 18 is an explanatory view showing another example of a connected base material.
FIG. 19 is an explanatory view showing another example of a cover material.
FIG. 20 is an explanatory view showing another example of a cover material.
FIG. 21 is an explanatory view showing another example of a cover material.
FIG. 22 is an explanatory view showing another example of the trunk edge.
FIG. 23 is an explanatory view showing another example of a dry wall material.
FIG. 24 is an explanatory view showing another example of a dry wall material.
FIG. 25 is an explanatory view showing another example of a dry wall material.
FIG. 26 is an explanatory view showing another example of a dry wall material.
FIG. 27 is an explanatory view showing another example of the mounting arrangement of the trunk edge.
[Explanation of symbols]
α Bolt-Nut β Fixing tool a Angle b Z clip c Filling joint material A Base material B ALC outer wall C Through hole D Connection base material D1 External material D2 Inner member E Trunk edge E1 Horizontal trunk edge E2 Vertical trunk edge F Cover material G Dry wall material H1 Connecting metal fitting H2 Connecting metal fitting 1 Outer bottom part 2 Inner bottom part 3 Female thread groove 4 Male thread groove 5 Lower hole 6 Tool locking hole 7 Circular hollow part 8 Circular tongue piece 9 Locking screw groove 10 Packing material 11 Hat type Steel material 12 Head 13 Flat steel material 14 Connection tongue piece 15 Lower hole 16 Side surface portion 17 Groove portion 18 Lip portion 19 Surface material 20 Back surface material 21 Core material 22 Male connection portion 23 Female connection portion 24 Cosmetic rib 25 Seal material 26 Tool 27 Flat portion 28 Adhesive member 29 Intermediate tongue 30 Grooved steel 31 Fireproof packing material 32 Waterproof sealant 33 Non-combustible member

Claims (1)

A through hole is provided in the existing ALC outer wall, and a connecting base material composed of an outer member and an inner member is inserted into the through hole, and one end of the outer member of the connecting base material is attached to the existing ALC outer wall. The other end of the outer member and one end portion of the inner member are coupled with an expansion / contraction function by screw coupling, and the other end of the inner member is connected to the trunk edge disposed on the ALC outer wall surface. An ALC outer wall that is fixed, is closed by a cover material that supports the gap between the through hole and the connecting base material on the connecting base material, and a new dry wall material is fixed to the trunk edge. Refurbishment structure.

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