JPH06193078A - Construction method for foundation - Google Patents

Abstract

PURPOSE:To shorten a construction period, and improve work efficiency in constructing a foundation. CONSTITUTION:A pair of footing side walls 22 made of an inorganic thin extrusion molded board as a form material are erected at the prescribed gap on blinding concrete 3 placed on a foundation. Also, a pair of riser side walls 23 are laid on the walls 22 at a gap narrower than the gap thereof. In addition, concrete 24 is placed in space cellularized with the walls 22 and 23, and a form is not released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a foundation which is formed on the ground and supports a house when the house is constructed.

[0002]

2. Description of the Related Art As is well known, the foundation of a house is generally formed by pouring concrete on site.

Conventionally, this foundation has been constructed by the following construction procedure. First, as shown in FIGS. 15 and 16, a root cutting hole 1 is formed in the ground, and split stones 2, 2, etc. are laid on the bottom of the root cutting hole 1, and then the discarded concrete 3 is poured. . And this discarded concrete 3
The markings 4 and 4 are performed on the upper part of the table, and the footing part formwork material 5 is applied to the marking plate 6 and the splint 7 in accordance with the marking 4
7 are positioned and installed, holes 8 are formed in the frame material 5 for the footing portion, and separators 9, 9 are inserted therethrough.

Then, as shown in FIG. 17, the facing side frame material 5 for the footing portion is arranged in accordance with the marking out 4, and holes 8, 8 ... Are opened and the separators 9, 9 ,.
, And the width stop bars 10 are used to install the formwork materials 5 and 5 for the footing portion at a predetermined interval. Then, on the inner surfaces of the frame members 5 and 5 for the footing portion, a marking 11 indicating the position which will be the top end of the concrete to be placed is made, and as shown in FIG.
The concrete 12 is poured into the space surrounded by the frame members 5 and 5 for the footing portion, and after the concrete 12 is cured and hardened, the frame members 5 and 5 for the footing portion are removed.

After the basic footing portion 13 is constructed by the above procedure, as shown in FIG.
In the upper part of the above, the rising parts 15 and 14 are constructed in the same manner as described above using the rising part form members 14 and 14, and concrete is cast, and after the concrete is cured and cured, the rising part form members 14 and 14 are The mold is removed and the foundation 16 is completed. Reference numeral 17 is a bar arrangement set in the foundation 16.

[0006]

By the way, in the above-mentioned conventional method of constructing a foundation, the work involves a wide variety of steps, namely, assembling formwork, the number of times concrete is cast, concrete curing, and formwork. Since demolding was required, it was difficult to shorten the construction period or the construction cost.
In addition, this construction method requires a large number of skilled workers such as civil engineering, reinforcing bars, and carpentry carpenters. In recent years, due to the decrease in skilled workers, a shortage of manpower has become a serious problem. In addition, since a large amount of mold material is used, not only a large space for storing these mold materials is required, but also a great deal of time and labor is required for carrying in and out these mold materials and cleaning the mold material after demolding. Was needed.

Moreover, in a narrow place where structures are adjacent to each other, it is extremely difficult to assemble and dismantle the formwork material. Further, the work of constructing the rising portion after constructing the footing portion is troublesome twice. Further, there is a problem that working wastes and the like that cause structural defects remain at the joint between the footing portion and the rising portion.

In addition, a large amount of timber imported from the South Sea is used as a formwork material, but in recent years, the use amount has been reduced for the purpose of protecting the global environment (in the construction industry,
There is an urgent need to reduce the amount of formwork materials used by about 35% in a few years. Moreover,
The foundation constructed by the above-mentioned construction method may be deteriorated due to aging, which may cause structural problems.

The present invention has been made in view of the above circumstances, and its main object is to provide a method of constructing a foundation that can shorten the construction period, improve work efficiency, and improve durability.

[0010]

[Means for Solving the Problems] A method of constructing a foundation of the first invention is a method of constructing a foundation for constructing a house or the like, which foundation is formed in the ground and supports the house.
On abandoned concrete constructed on the ground, a pair of side walls made of an inorganic thin-walled extruded plate as a formwork material is erected at a predetermined interval, and concrete is placed between these side walls to remove the formwork. It is characterized by being untyped.

A construction method of the foundation of the second invention is a construction method of a foundation for constructing a foundation for supporting a house formed on the ground when constructing a house, etc. A pair of side walls for a footing part made of an inorganic thin-walled extruded plate as a frame material are erected at a predetermined interval, and a pair of rising parts made of the inorganic thin-walled extruded plate are provided above the side walls for the footing part. Characterized in that the side walls for standing are erected at intervals smaller than the predetermined distance, concrete is poured into the space defined by the side wall for footing part and the side wall for rising part, and the mold is not demolded. There is.

According to a third aspect of the present invention, in the method for constructing a foundation of the second aspect of the present invention, the pair of side walls for the footing portion has a middle portion that is bent so that an upper end portion thereof has a width equal to that of the rising portion. It is characterized by being connected to the side wall. The construction method of the foundation of the fourth invention is characterized in that a lath net is provided between the upper end of the footing side wall of the second invention and the lower end of the rising side wall.

The foundation construction method of the fifth invention is characterized in that a plurality of holes or grooves are formed in the side wall of the first invention.

[0014]

The method of constructing the foundation of the present invention is such that when concrete is poured, internal air flows out from the lath net, and the concrete is filled into the space defined by the footing side wall and the rising side wall. It is possible to reliably perform the above, and it is possible to grasp the filling state of the concrete by observing the space portion of the footing portion through the lath net.

Further, since the side wall is formed thin, the weight of the side wall can be reduced, and the side wall can be easily handled during transportation and installation work. Moreover, since the side wall is formed with a plurality of holes or grooves, the side wall can be further reduced in weight, and the handleability of the side wall during transportation and installation can be further improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the foundation construction method of the present invention will be described below with reference to the drawings. In addition, in the same structure part as the conventional example,
The same reference numerals are given and the description is omitted. Formwork of various shapes is required as a foundation for a house, and it is naturally possible to use an integrally formed extruded formwork corresponding to it, but here, the sidewalls for the footing part shown in claims 2 to 5 are used. An embodiment of construction using the formwork of the rising side wall will be described below with reference to the drawings.

First, the basic structure of the present invention will be described with reference to FIG. In the figure, reference numeral 21 is a cloth foundation. The cloth foundation 21 includes side walls 22 and 22 for a footing portion that are erected on the waste concrete 3, and a side wall 23 for a rising portion that is erected by being connected to the respective upper ends of the side walls 22 and 22 for the footing portion. 23, and the side walls 22 and 22 for the footing portion and the side wall 2 for the rising portion.
It is constructed from concrete 24 cast in a space surrounded by 3, 23.

The side walls 22 and 22 for the footing portion are formed in a bent shape at an intermediate portion, and convex portions 22a and 22a are formed at the upper ends thereof. In addition, recesses 23a,
23a are formed, and the footing side walls 22, 2 are formed.
The two convex portions 22a, 22a are fitted and connected.

That is, the footing portion 13 of the cloth foundation 21.
Is formed by the footing part side walls 22, 22, and the side part of the rising part 15 is formed by the rising part side walls 23, 23. The footing portion side walls 22, 22 and the rising portion side wall 23,
23 is made of an inorganic thin-walled extrusion-molded material that has been extruded in advance in a factory or the like, and has excellent mechanical performance and good appearance, durability, water resistance, and freeze-thaw resistance. According to the extrusion molding method, a molding material having a free cross-sectional shape can be produced. One example of this inorganic extrusion molding material is Lambda (manufactured by Showa Denko Kenzai Co., Ltd.).

If the thickness of this inorganic thin-walled extruded material is less than 10 mm, it is difficult to secure a reliable strength, and if the thickness exceeds 30 mm, the weight becomes heavy and the handleability deteriorates. , Its thickness is about 10 mm
It is preferable to set it within the range of 30 mm. Then, it is preferable that the weight be a weight that can be carried by one worker (about 25 kg or less per sheet).

The inorganic thin-walled extruded product may be a solid product, but in order to reduce the weight, it is formed with a plurality of holes 25, 25 ... Or as shown in FIG. As shown in FIG. 3, it is preferable that the groove portions 26, 26 ... Are formed on the side surfaces. Further, by making the surface shape of the inorganic thin-walled extruded material rough, the integrity with the concrete 24 is improved. Further, by applying a sealer treatment of the synthetic polymer emulsion to the cast surface of the concrete 24 of the inorganic thin-walled extruded material, the integrity with the concrete 24 can be further improved.

As shown in FIG. 4, the side ends of the footing part side walls 22 and 22 or the rising part side walls 23 and 23 are formed in a concave shape or a convex shape, respectively. By fitting the portion and the convex end portion, the footing portion side wall 22 or the rising portion side wall 23 is connected in the longitudinal direction. Also, the side walls 22, 22 for the footing portion
Is supported at its lower end by frames 31, 31 fixed on the discarded concrete 3 with concrete nails or the like.

The frame 31 is made of metal and is formed in an L shape as shown in FIG. 5. The bottom portion 32 has a plurality of locking pieces 34, 3 at a predetermined distance from the side portion 33.
4 are formed. That is, by fitting the lower end portion of the footing portion side wall 22 between the side portion 33 of the frame 31 and the locking pieces 34, 34, ..., The lower end portion of the footing portion side wall 22 is disposed on the discarded concrete 3. It is supposed to be supported.

The frame 31 is formed with holes 35, 35 ... For inserting concrete nails, and U-bolts are provided between the locking pieces 34, 34. A pair of holes 36, 36 ... Are formed so that U bolts, which will be described later, can be inserted therethrough. Further, the footing side walls 22, 22 are provided with supporting members 41, 41 on opposing surfaces in the vicinity of the upper ends thereof, and as shown in FIG.
41 are connected to each other by bolts 42, 42, nuts 43, 43 ... And a fastening member 44.

The support member 41 is formed of a metal plate, and as shown in FIG. 7, the fixing piece 4 having holes 45, 45 ... And a hole 46 in the longitudinal direction at predetermined intervals.
7, 47 ... Are formed. Then, the holes 45, 45
The bolts 42, 42 are inserted through the ... And the bolts 42, 42 are fixed by the nuts 43, 43. Bolts 42 fixed to these support members 41, 41 and connected by the fastening member 44,
42 has threads formed in different directions,
By rotating the fastening member 44, the support member 41,
The upper end portions of the footing portion side walls 22, 22 provided with 41 are displaced in a direction of approaching and separating from each other.

Further, as shown in FIG. 8, the bolts 52 of the support member 51 are inserted through the holes 46 formed in the fixing pieces 47 of the support member 41 and fixed by the nuts 53, 53. In addition, as shown in FIG. 9, the support member 51 includes a bottom plate 55 fixed to the discarded concrete 3 at the lower end portion by an adhesive or a concrete nail or the like.
The bottom plate 55 is composed of the bolts 52 provided upright on the top of the bottom plate 55. That is, the supporting member 51 supports the footing portion side walls 22 and 22 in an upright state and adjusts the height of the upper end portion thereof.

Further, as shown in FIGS. 10 and 11, rising member support members 61, 61 are detachably attached to the upper ends of the rising part sidewalls 23, 23. The rising part support members 61, 61 are made of a metal plate, and a plurality of locking pieces 62,
62 ... are formed in a protruding state. In addition, the support members 61, 61 for the rising portion have holes 63, 6
3 are formed, and the pins 64, 64 ... Can be inserted into these hole portions 63, 63.

Further, the support member 6 for these rising portions
1, 61 are provided with U bolts 65, 65 ..., These U bolts 65, 65.
6 ... can be fixed. That is,
The support members 61, 61 for the rising portions are attached to the upper end portions of the side walls 23, 23 for the rising portions, the locking pieces 62, 62 ...
Installed with the outer side positioned, and the holes 63, 63 ...
... through the pins 64, 64 ...
By dropping 4 ... into the upper end portions of the rising portion side walls 23, 23, the rising portion supporting members 61, 61 are fixed to the upper end portions of the rising portion side walls 23, 23.

Then, the support member 6 for these rising portions
The round bars 66, 66 ... Are hung over the one and the other 61, and these round bars 66, 66 ... Are fixed to the rising portion support members 61, 61 by U bolts 65, 65. The upper end portions of 23 are connected to each other with a predetermined gap.

Next, a method for constructing the cloth foundation 21 having the above structure will be described. First of all, mark out 4 and 4 on the discarded concrete 3.
Then, the frames 31, 31 are fixed with concrete nails or the like in accordance with the marking. Then, the side walls 22 for the footing portion are respectively attached to the frames 31, 31.
The lower end of 22 is fitted and supported.

Further, the footing side walls 22,
Fixing members 47, 4 of the respective bearing members 41, 41 of 22
7, and the bolts 5 of the support members 51, 51
2 and 52 are inserted, and the height is adjusted and fixed by nuts 53, 53 .... Then, the side wall 2 for the footing portion
The fastening members 4 are attached to the bolts 42, 42 attached to the bearing members 41, 41 of 2, 22 by the nuts 43, 43.
4 is attached and the fastening member 44 is rotated to reliably connect the upper end portions of the footing side walls 22, 22 with a predetermined gap. The bolt 42,
42, the nuts 43, 43, ... and the fastening member 44 connect the support members 41, 41 to each other at about 600 points in the longitudinal direction.
Perform with mm pitch. The supporting members 51, 51 support the footing side walls 22, 22 at a pitch of about 800 mm in the longitudinal direction.

Then, the rising part side walls 23, 23 are erected on the upper ends of the footing part side walls 22, 22 which are erected at a predetermined interval from each other by the above-mentioned process.
That is, the protrusion side walls 22 and 22a formed on the upper ends of the footing side walls 22 and 22 are connected to the rising side walls 23 and 2a.
The recesses 23a, 23a formed at the lower end of the No. 3 are fitted. Further, support members 61, 61 are attached to the upper ends of the rising side walls 23, 23, and the support members 6 are attached.
Round bars 66, 66 ... Are hung over 1, 61 and fixed to each other by U bolts 65, 65, so that the upper ends of the rising side walls 23, 23 are spaced at predetermined intervals. The side walls 23, 23 for the rising portion are securely connected to each other in a state of
Make sure to stand on the upper end of 2.

As described above, after the side walls 22 and 22 for the footing portion and the side walls 23 and 23 for the rising portion are erected on the discarded concrete 3 to form the side wall of the cloth foundation 21, the side wall for the rising portion is formed from above. Concrete 24 is poured between the side walls 23, 23, and the concrete 24 is poured into the space surrounded by the rising side walls 23, 23 and the footing side walls 22, 22 to complete the cloth foundation 21. After the curing curing of the concrete 24, the upright supporting members 61, 61 are removed.

As described above, according to the cloth foundation construction method of the above-described embodiment, the mold demolding work is unnecessary as compared with the conventional construction method, so that the construction period is greatly shortened and the construction man-hour is greatly reduced. This will save labor and improve the working environment. Further, since the construction work does not require skill, there is no influence of shortage of manpower due to the decrease of skilled workers. In addition, it is possible to eliminate the need to secure a storage place for storing a large amount of form material, as in the past, and to carry out work such as loading and unloading a large amount of form material and cleaning used form material. It can be eliminated, and the labor at the time of construction can be greatly reduced.

Further, since plywood is not used, it is possible to eliminate the use of timber from the South Sea, which has recently been required to reduce the amount used for the purpose of protecting the global environment. Further, since it is unnecessary to remove the form material, the construction work can be performed well even in a narrow place where the structures are adjacent to each other.

Further, since the footing portion 13 and the rising portion 15 are constructed by pouring the concrete 24 once, the concrete 24 is constructed in a very good condition without forming a splicing portion. A high quality cloth foundation can be obtained, and after the concrete of the footing portion 13 is cast, the rising portion 15
Compared with the conventional example in which concrete is placed, the construction period and labor can be greatly reduced.

The cast concrete 24 is covered with side walls 22 and 22 for the footing portion and side walls 23 and 23 for the rising portion, the side portions of which are exposed to the outside directly. Since it is not present, it is possible to make it less susceptible to external influences and to reduce deterioration over time as much as possible, as compared with the conventional method. Further, unlike the conventional case, it is not necessary to finish the surface of the concrete after placing the concrete, and thus it is possible to further shorten the construction period and labor. The bent shapes of the footing portion side walls 22, 22 in the above-described embodiment are not limited to those in the above-described embodiment, and may be, for example, as shown in FIG.
As shown in 2, it may be bent at a right angle.

Next, a second embodiment will be described with reference to FIG. The cloth foundation 71 of this embodiment uses flat plate shaped side walls 22 for the footing portions. Then, these footing part side walls 22, 22
The upper end portions of are connected by footing support members 72, 72.

These footing supporting members 72, 72
14 is a metal plate formed in an L shape as shown in FIG. 14, and two locking pieces 74, 74 are formed at positions facing the side portions 73, 73. And these side parts 7
By fitting the upper ends of the footing part side walls 22, 22 between the parts 3, 73 and the locking pieces 74, 74, the footing part support members 72, 72 are attached.

Further, these footing support members 7
U bolts 75, 75 are attached to the 2, 72, and a round bar 76 is fixed by the U bolts 75, 75. That is, the footing side wall 2
By mounting a round bar 76 between the footing part support members 72, 72 attached to the upper ends of the Nos. 2, 22 and fixing the round bar 76 with the U bolts 75, 75, the footing part side wall 22, The upper ends of 22 are connected to each other with a predetermined gap.

Further, these footing support members 7
On the upper part of the round bar 76 that is hung between the two 72,
Frames 31, 31 are installed, U bolts 77,
It is fixed to the round bar 76 by 77. Then, by the frames 31, 31 fixed on the round bar 76,
Side walls 23, 23 for the rising portion are supported.

Further, the bolts 52, 52 of the support members 51, 51 are fixed to the frames 31, 31 by nuts 53, 53, and the support members 51, 51 stand upright on the frames 31, 31. The rising side wall portions 23, 23 are reliably supported. Further, lath nets 81, 81 are set on the upper surface side of the footing portion 13 on the side of the rising portion 15, and these lath nets 81, 81 are fixed to the round bar 76 by a binding iron wire or the like. . Further, fixing rods 82, 82 ... Are provided on the upper portion of the lath nets 81, 81, and these fixing rods 82, 82 ... Are securely fixed to the round rod 76 by a binding iron wire or the like.

Next, a method of constructing the cloth foundation having the above structure will be described. First, the frames 31, 3 on the discarded concrete 3
The flat side walls 22 for the footing portion are erected by 1. The side walls 22 and 2 for the footing portion are
Footing part support members 72, 72 are attached to the upper end of 2 at a predetermined interval in the longitudinal direction, and round bar 76 can be stretched between these footing part support members 72, 72. , 75 to securely connect the upper ends of the footing side walls 22, 22 to each other.

Further, the support members 51, 51 are disposed between the side walls 22, 22 for the footing portion, and
The frames 31, 31 are arranged on the round bar 76 in the longitudinal direction, and the frames 31, 31 and the bolts 52, 52 of the support members 51, 51 are fixed to fix the frames 31, 3 to each other.
1 is securely supported on the footing portion 13. Then, the rising portions side walls 23, 23 are erected on the supported frames 31, 31, and the rising portion supporting members 61, 61 are fixed to the upper ends of the rising portion side walls 23, 23. Support member 6
1, 61 round rods 66, 66 ... and U bolts 65, 6
Connect by 5 ...

Next, a lath net 81 is formed on the upper surface side of the footing portion 13 on the side of the rising portion side walls 23, 23.
81 is provided, and these lath nets 81, 81 are fixed to the round bars 76, 76 of the footing part supporting members 72, 72 with the binding iron wire. Then, the fixing rods 82, 82, ... Are fixed to the lath nets 81, 81 with a binding iron wire or the like to securely fix the lath nets 81, 81.

After the side walls 22 and 22 for the footing portions and the side walls 23 and 23 for the rising portions are erected on the waste concrete 3 as described above to form the side walls of the cloth foundation 71, the side walls 23 and 23 for the rising portions are formed. Concrete 24 is poured between the two, and these footing side walls 22,
The concrete 24, 24 is poured into the space surrounded by 22 and the side wall 23 for the rising portion to complete the cloth foundation 71. After the curing curing of the concrete 24, the upright supporting members 61, 61 are removed.

According to the cloth foundation construction method of the second embodiment, the same effects as those of the first embodiment can be obtained, and
Side wall 2 for footing part when concrete 24 is placed
Since the air in the space portion flows out from the joint between the side walls 2 and 22 and the rising portion side walls 23, 23, the concrete 24 can be spread over the entire space portion. Also,
It is possible to confirm the filling state of the concrete 24 into the space portion at this connection point.

The side walls 22, 22 for the footing portion are also provided.
Since the lath nets 81 and 81 are provided at the connecting points between the side walls 23 and 23 for the rising portions, the concrete 24 can be prevented from flowing out from these connecting points.

Next, a comparison test of the construction man-hours was performed between the construction method of the cloth foundation of the first and second embodiments and the construction method of the conventional cloth foundation. The results are shown in Table 1. However, the construction scale will be 24m (6m x 6m) in total length.

[0050]

[Table 1]

As shown in Table 1, according to the foundation construction method of the present embodiment, the man-hours of the operator are remarkably reduced as compared with the conventional construction method, and it is confirmed that the labor saving is greatly improved.

[0052]

As described above, according to the foundation construction method of the present invention, the following effects can be obtained. Compared with the conventional construction method, the mold demolding work is not required, so the work period can be greatly shortened, the construction man-hours can be greatly reduced, and labor can be saved, and the working environment can be improved. Also,
It is not necessary to finish the surface of the concrete after the concrete is placed, and the construction period and labor can be further shortened. In addition, it is possible to eliminate the need to secure a storage place for storing a large amount of form material, and to eliminate the work of carrying in and out a large amount of form material and cleaning the used form material, The time and effort at the time of construction can be greatly reduced. Further, since it is unnecessary to remove the form material, the construction work can be performed well even in a narrow place where the structures are adjacent to each other. Further, since the construction work does not require skill, there is no influence of shortage of manpower due to the decrease of skilled workers.

Further, since the footing portion and the rising portion are constructed by pouring the concrete once, there is no possibility of forming a joint portion in the concrete.
It is possible to obtain a high-quality fabric foundation constructed in an extremely good state, and the construction period and labor can be reduced compared to the conventional example in which the footing part is placed and then the rising part is placed. It can be significantly reduced.

Further, since plywood is not used, it is possible to eliminate the use of timber from Nanyo, which has recently been required to reduce the amount used for the purpose of protecting the global environment.

[Brief description of drawings]

FIG. 1 is a sectional view of a foundation for explaining a method of constructing a foundation according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an inorganic thin-walled extrusion-molded plate for explaining the shape of the inorganic thin-walled extrusion-molded plate.

FIG. 3 is a perspective view of an inorganic thin-walled extruded plate for explaining the shape of the inorganic thin-walled extruded plate.

FIG. 4 is a side view of a connecting portion of a footing portion side wall or a rising portion side wall for explaining a shape and a connecting structure of a side end portion of the footing portion side wall or the rising portion side wall.

FIG. 5 is a perspective view of a frame for explaining the shape and structure of the frame.

FIG. 6 is a side view of a connecting portion for explaining a connecting structure of an upper end portion of a footing portion side wall.

FIG. 7 is a perspective view of a bearing member for explaining the shape and structure of the bearing member provided on the side wall for the footing portion.

FIG. 8 is a side view of a connecting portion for explaining a connecting structure between the supporting member and the supporting member.

FIG. 9 is a perspective view of a support member for explaining the shape and structure of the support member.

FIG. 10 is a side view of a connecting portion for explaining the connecting structure of the upper end of the rising portion side wall.

FIG. 11 is a perspective view of a rising portion support member for explaining the shape and structure of the rising portion support member.

FIG. 12 is a side view of a footing portion illustrating another example of the shape of the side wall for the footing portion.

FIG. 13 is a sectional view of a foundation for explaining a method of constructing the foundation of the second embodiment of the present invention.

FIG. 14 is a perspective view of a footing part support member for explaining the shape and structure of the footing part support member.

FIG. 15 is a cross-sectional view of a foundation construction site for explaining a conventional foundation construction method.

FIG. 16 is a perspective view of a construction site of the foundation for explaining a conventional construction method of the foundation.

FIG. 17 is a perspective view of a base construction site for explaining a conventional foundation construction method.

FIG. 18 is a cross-sectional view of a foundation construction site for explaining a conventional foundation construction method.

FIG. 19 is a cross-sectional view of a base construction site for explaining a conventional foundation construction method.

[Explanation of symbols]

 3 Discarded concrete 21, 71 Cloth foundation (base) 22 Side wall (side wall) for footing part 23 Side wall (side wall) for rising part 24 Concrete 25 Hole part 26 Groove part 81 Lath net

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Kausu Saito 1-13-9 Shibadaimon, Minato-ku, Tokyo Within Showa Denko KK (72) Inventor, Narabe Iwashi 578 Miyazawa-cho, Seya-ku, Yokohama-shi, Kanagawa Prefecture Of 1

Claims (5)

[Claims] 1. A method of constructing a foundation for constructing a house or the like, which is formed on the ground to support the house, and comprises an inorganic thin wall as a formwork material on abandoned concrete constructed on the ground. A method of constructing a foundation, characterized in that a pair of side walls made of extruded plates are erected at predetermined intervals, concrete is placed between the side walls, and the mold is not demolded. 2. A method of constructing a foundation for constructing a house, which is formed on the ground, when constructing a house or the like, comprising: an inorganic thin wall as a formwork material on a scrap concrete constructed on the ground. A pair of side walls for footing parts made of extruded plates are erected at predetermined intervals, and a pair of side wall for rising parts made of the inorganic thin-walled extruded plates are provided above the side walls for footing parts more than the predetermined intervals. A method of constructing a foundation, characterized in that standing is provided at a narrow interval, concrete is poured into a space defined by the side wall for the footing part and the side wall for the rising part, and the mold is not demolded. 3. The pair of side walls for the footing portion is formed by bending the middle portion and matching the upper end portion with the width of the rising portion so as to be connected to the side wall for the rising portion. Construction method of foundation described in 2. 4. The method for constructing a foundation according to claim 2, wherein a lath net is provided between an upper end of the footing side wall and a lower end of the rising side wall. 5. The method for constructing a foundation according to claim 1, wherein the side wall is formed with a plurality of holes or grooves.