JPH10292602A - Method for placing floor bed and method for constructing floor panel using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable facilitating leveling work and reducing its cost when placing floor beds (and floor panel) using an foaming resin bond. SOLUTION: A floor bed with a foaming resin bond solution 2 applied to its back is placed as it is leveled using a portable leveling jig (main body 21 and additional weights 22, 22a), only at each end portion of a concrete slab C. Next, a second floor bed 1a with a foaming resin bond solution 2a applied to its back is placed at the middle portion and is entirely pressed by a pressing jig 30 to level the second floor bed 1a, Thereafter, a floor panel 10 is laid on the floor bed 1 and the second floor bed 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of arranging a floor base material and a method of constructing a floor panel using the same. Further, the present invention relates to a method for constructing a floor in which a floor finishing material such as a flooring material is laid on the floor panel surface thus constructed.

[0002]

2. Description of the Related Art Conventionally, as a floor construction of a concrete building, a method of laying a floor base material on a concrete slab while adjusting a level and laying a floor finish material on the floor slab has been generally performed. As an example, mortar dumplings are arranged at predetermined intervals, and while the mortar dumplings are soft, a floor base material made of expanded polystyrene or the like in which a nailing member is embedded is placed and laid, and a floor panel ( There is a method of laying a floor finishing material such as a flooring material, or a base material serving as a base of the floor finishing material (see Japanese Utility Model Application Laid-Open (Kokai) 63)
167534). In this construction method, the horizontal level is adjusted by deforming the mortar dumpling, but this level adjustment is very difficult and requires skill. Moreover, it usually takes about two to three days to one week to solidify the mortar dumplings, and there is a problem that the floor finishing work cannot be advanced during that period.

[0003] In order to solve the drawbacks of the conventional method using mortar dumplings, a primer is applied on a concrete floor slab, and then a plurality of dumpling-shaped hard foaming urethane liquids are applied, and the floor is placed underneath. A construction method has been proposed in which a flooring board as a base material is placed and pressed from above with a ruler based on the height of the joist to wait for the foaming urethane to solidify and obtain a leveled flooring board (particularly). See JP-A-4-281954). Also, as a method of sticking boards such as gypsum board to the floor,
The required number of foamable adhesives (for example,
A method has been proposed in which an elastic spacer impregnated with a hard foamed polyurethane solution) is arranged, and while the movement of the board is regulated by an adjuster for level adjustment, the foaming adhesive is allowed to wait for foaming and solidification ( JP-A-7-9
No. 1015).

[0004]

In the above construction method, the level is adjusted while waiting for the urethane foam to solidify while restricting the upward movement of the floor base material caused by foaming of the foamable urethane resin by some means. As compared with the conventional method using a mortar dumpling, there is an advantage that level adjustment can be performed reliably without skill. However, in the case of the former, it is required that the operator always presses the ruler from above, and since the joist is used as a reference body for level adjustment when fixedly arranged on the skeleton side, While the construction of the joists is essential,
Since the joist and the floor board are in direct contact with each other after construction, the building has a drawback that floor vibrations easily propagate through wall surfaces.

In the latter case, as an adjuster for level adjustment, an adjuster pin having a plate holding portion or an adjuster including a male member and a female member whose length can be adjusted is used. In the case of an adjuster pin, many work steps are required, such as forming an adjustment hole for the adjuster pin on the board, embedding the adjuster pin on the concrete slab surface, and removing the adjuster pin after the urethane foam has solidified. . In particular, the work of embedding the adjuster pin to a depth that is not inferior to the urethane foaming pressure involves great difficulty. When an adjuster composed of a male member and a female member is used, the work of embedding pins in a concrete slab can be omitted, but a plurality of adjusters are required for each board, and the adjuster is used as is with the concrete slab and the board. And the construction cost rises greatly. In addition, due to the structure of the adjuster, it is difficult to restore that portion of the board to a predetermined height when the board is pressed excessively, so that the board must be pressed very carefully.

The present invention relates to a conventional method in which the upward movement of an underfloor material caused by foaming of an expandable resin bonding material is restricted by some means while the foaming resin bonding material is solidified and the level of the underfloor material is adjusted. The purpose of the present invention is to eliminate the above-mentioned inconveniences of the floor construction method, and in addition to shortening the construction period, the work process can be simplified and simplified and the construction cost can be reduced. An object of the present invention is to provide a method of arranging a floor base material and a method of constructing a floor panel using the same. It is still another object of the present invention to provide a floor construction method for constructing a floor based on a floor obtained by the floor panel construction method.

[0007]

According to a first aspect of the present invention, there is provided a method of arranging a floor base material, the method comprising the steps of: Use a portable level-adjusting jig that has a weight that can hold up the upward movement and that has an adjustable amount of advance. And the floor base material, and further, the level adjusting jig is fixedly arranged, and the level of the leg is adjusted by adjusting the amount of advance of the legs as necessary, thereby expanding the foaming resin joining material. Waiting for solidification of the expandable resin bonding material in a state where the upward movement of the floor base material caused by the level adjustment jig is restricted, and removing the level adjustment jig after solidification of the expandable resin bonding material, Forming matched flooring The constitution (claim 1).

[0008] In order to solve the above-mentioned problems, a method of arranging a floor base material according to a second aspect of the present invention uses the same portable level adjusting jig as described above and places the floor base material in a place where the floor base material is to be mounted. A level adjusting jig is fixedly arranged, and the level of the leg is adjusted by adjusting the amount of advance of the legs as necessary. In a state where the upward movement of the floor base material caused by foaming of the foamable resin joining material is regulated by the level adjustment jig, and the solidification of the foamable resin joining material is waited for. The level-adjusting jig is later removed to form a level-adjusted floor base material (claim 2).

In the present invention, the shape and structure of the "floor base material" are not limited, and all floor base materials conventionally used in this type of floor construction can be applied. For example,
So-called "joist", laminated plywood and foamed resin, foamed or non-foamed synthetic resin alone,
And so on. A conventionally used floor panel may be cut into appropriate dimensions and used as a floor base material. further,
Laminating or embedding a wooden material such as a nailable plywood or a particle board as a surface material is particularly effective because it facilitates subsequent laying of floor panels or floor finishing materials.

According to this construction method, one level adjusting jig is required for each floor base material to be arranged. However, the level adjusting jig is portable and is required in a place where it is required. , It is extremely easy to use repeatedly, and the construction cost is reduced as well as the workability. Furthermore, since the level adjustment jig is arranged non-fixedly, it is possible to easily adjust the amount of advance of the legs before or during the installation work, and to prevent unevenness (unevenness) on the floor base surface, Fine adjustments can be made each time on site.

Preferably, a level adjusting jig composed of a jig body and an additional weight is used as the portable level adjusting jig. In this case, the required weight is obtained from the additional weight, so that the jig body can be reduced in weight provided that it has the required mechanical strength. Is improved. In addition, by setting the additional weight to have the minimum necessary weight according to the construction conditions, the burden on the operator can be minimized.

According to the present invention, further, the first floor base material, which has been level-adjusted by the above-mentioned mounting method, is arranged in a row at predetermined intervals on the floor base. A required number of foamable resin bonding material liquids and a second flooring material are arranged between the first flooring materials thus prepared, or a second flooring with a foamable resin bonding material liquid applied to the back surface After arranging a required number of materials, a presser having a weight capable of suppressing the upward movement of the second flooring material caused by foaming of the expandable resin bonding material between the row-shaped first flooring materials. Place the jig,
While the upward movement of the second floor base material caused by the foaming of the foamable resin joining material is restricted by the holding jig, the solidification of the foamable resin joining material is waited for, and after the foaming resin joining material is solidified, the holding is performed. By removing the jig, a second floor base material having the same level as the first floor base material is further formed, and a required floor panel is laid on the first and second floor base materials. A floor panel construction method characterized by this is also disclosed (claim 4).

According to this construction method, the first floor base material whose level has been adjusted using the level adjusting jig only at a predetermined position (preferably, the left and right side end positions) of the floor base is constructed, and the under floor between the first floor base material and the first floor base material is constructed. Since the level adjustment of the base material can be performed simply with the "holding jig", the number of level adjusting jigs required for floor construction of the required area can be greatly reduced, and the construction cost is simplified and the construction cost is reduced. Can be reduced.

As a modified example of the above-mentioned construction method, a floor panel is directly arranged together with the foamable resin bonding material liquid instead of the floor base material between the first floor base materials arranged in a row. It is also possible to arrange the floor panel at the same level as the first floor base material directly on the concrete slab surface by pressing the panel with a pressing jig (claim 5). This construction method is effective for floor construction in which the height from the concrete slab surface to the floor surface cannot be made large.

In the present invention, the term concrete slab is used to include concrete slabs made of reinforced concrete by a conventional construction method, concrete slabs made of precast concrete, floor panels made of cellular concrete panels, and the like.

In the present invention, the term “floor panel” is used in ordinary floor construction to include all of the above-mentioned “floor base material”.
It may be a flat material such as a discarded plywood or the like as a base material of the flooring material, or a composite material or the like in which a foamed resin material is adhered to the back side of the plywood. The floor panel and the floor base material may have the same configuration. Furthermore, the present invention also discloses a floor construction method in which a flooring material is laid on a floor surface constructed by the above-described floor panel construction method.

[0017]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a state in which a floor panel is further constructed on a concrete slab surface on which a floor covering material is disposed by the method of disposing a floor covering material according to the present invention, and FIG. FIG. FIG.
FIG. 4 is an exploded perspective view illustrating a level adjustment jig and a method of using the same, and FIG. 4 is a perspective view illustrating a state in which the level of the floor base material is adjusted by the level adjustment jig.

In this embodiment, the floor base material 1 and the floor panel 10 are both laminated boards in which a particle board is laminated on the upper surface of a polystyrene resin foam.
The flooring material 1 is formed by cutting a laminate used for the above into a long shape. The floor base materials 1 are arranged in rows along the left and right side surfaces Ca, Ca of the concrete slab C, and a plurality of floor panels 10 are placed between the floor base materials 1 arranged in rows. Have been placed.

First, a level adjusting jig and its use will be described with reference to FIGS. In this embodiment, the level adjustment jig 20 includes an adjustment jig main body 21 and a weight 22. The adjustment jig body 21 is a square frame,
The central part is an opening 23. 4 of the adjustment jig body 21
A screw 24 that functions as a leg is screwed into the corner so as to be able to advance and retreat in the vertical direction, and the amount of advance of the leg from the back surface of the adjustment jig main body 21 is adjusted by rotating the screw 24. . Preferably, the adjustment jig main body 21 is formed of an angle steel, a channel steel, a square steel pipe, or the like to reduce the weight. The weight 22 is preferably formed of a solid steel material, and has a length substantially equal to the width of the adjustment jig body 21 in the short direction. The plurality of weights 22 (three in the drawing) are prepared, and are arranged at substantially the same intervals in the longitudinal direction of the adjustment jig main body 21.

The floor base material 1 is substantially the same size as the opening 23 of the adjustment jig main body 21, but is sized to be able to pass through the opening 23. The floor base material 1 is arranged on the concrete slab C as follows. First, a mark is made on the surface position of the concrete slab C on which the floor base material 1 is to be placed by ink marking or the like, and the adjustment jig body 21 is placed at that position. Next, the screw 24 is rotated to adjust the level of the adjustment jig main body 21 so that the upper surface of the adjustment jig main body 21 has the desired height. When the concrete slab C surface has irregularities, the four screws 24 are individually adjusted so that the upper surface of the adjustment jig main body 21 is horizontal.

After or in parallel with the level adjustment of the adjustment jig main body 21, a foaming resin bonding material solution 2 made of a one-part foaming urethane resin is applied to the back surface of the floor base material 1 at a plurality of locations ( (Three places in the illustrated example) The coated urethane resin solution 2 side is prepared as the concrete slab C side, and the opening 23 of the adjustment jig body 21 is prepared.
And placed on the concrete slab C. The foamable urethane resin solution 2 is not foamed at that time, and the surface of the floor base material 1 is located below the upper surface of the adjustment jig main body 21. Although not shown, the foam base urethane resin solution 2 may be applied to the surface of the concrete slab C, and then the floor base material 1 may be placed thereon.

As the foamable urethane resin solution, the above-mentioned one-component urethane resin is preferably used. In addition to the two-component urethane resin, a phenol resin is used as a main raw material, and a foaming agent and a curing agent are added to form a foaming urethane resin. A foamable phenol resin to be cured can also be used.

Next, the three weights 22 are adjusted to the adjustment jig main body 21.
Are arranged at approximately equal intervals on the upper surface of the device, and are left in that state. As time elapses, the foaming of the foamable urethane resin solution progresses, and the foaming pressure pushes the floor substrate 1 upward. In this embodiment, the weight 22 has a weight capable of suppressing the upward movement of the floor substrate 1 caused by the foaming of the foamable urethane resin solution 2. For this purpose, the floor base material 1 has its upper surface
The upward movement is suppressed at the position where the contact is made, i.e., at the height position of the upper surface of the adjustment jig main body 21 previously adjusted to the level, and in this state, the solidification of the foamable urethane resin 2 proceeds. FIG. 4 shows this state.

After the foamable urethane resin 2 is solidified, the weight 22 and the adjustment jig main body 21 are removed, whereby
Floor slab C with level matching is concrete slab C
It is arranged on the surface of.

Next, referring to FIG. 1 and FIG. 2, a construction method in the case where the floor panel 10 is laid on the entire surface of the concrete slab C using the floor base material 1 provided by the above-described method as a level matching reference. explain. First, concrete slab C
One or more (two in the illustrated example) floor base materials 1 (preferably in a parallel state) are arranged along the left and right side surfaces Ca, Ca in a row by the above-described method. I do. After the application (after the foamable urethane resin 2 is substantially solidified), the foamable urethane resin solution 2a is provided on the concrete slab C surface between the floor base materials 1 and 1 arranged in the row at predetermined intervals on the back surface. The floor panel 10 coated with is spread.
At this time, the foamable urethane resin solution 2a has not been foamed, and the surface of the floor panel 10 is located below the upper surface of the adjustment jig main body 21. In this case, also, after applying the foamable urethane resin solution 2a to the surface of the concrete slab C, the floor panel 10 may be placed thereon.

Next, the weight 22 is removed from the adjustment jig main body 21, and instead, the floor base materials 1, arranged in the row,
During 1, a holding jig 30 having a weight capable of holding the upward movement of the floor panel 10 caused by foaming of the foamable urethane resin solution 2 a is placed. Preferably, the holding jig 3
For 0, a plurality of rod members formed of the same material as the weight 22 are used.

In the illustrated example, the holding jig 30 is placed between the floor base materials 1 and 1 while the adjusting jig main body 21 is left. In this embodiment, since both ends of the holding jig 30 are supported by the adjusting jig main body 21, the holding jig 30 is placed when the foamable urethane resin solution 2 on the back surface of the floor base material 1 is not completely solidified. It can be placed. In this state, the process waits for the foaming and solidification of the foamable urethane resin solution 2 applied to the back surface of the floor panel 10 to progress. As described above, the holding jig 30 is made of the foaming urethane resin solution 2a.
Has a weight capable of suppressing the upward movement of the floor panel 10 caused by the foaming of the floor panel 10, and the floor panel 10 has a position where its upper surface is in contact with the back surface of the holding jig 30, that is,
At the height of the upper surface of the adjustment jig main body 21 (the surface height of the floor base material 1) at the level previously adjusted, the upward movement is suppressed, and the state is maintained. FIG. 2 shows the state.

After the foaming urethane resin 2a has solidified, the holding jig 30 and the adjusting jig main body 21 are removed, so that the floor panel 10 leveled to the same height as the floor base materials 1 and 1 can be concrete slab. It is arranged on the surface of C.

In the above example, the holding jig 30 is placed between the floor base materials 1 and 1 while the adjustment jig body 21 is left, but the foaming urethane resin on the back surface of the floor base material 1 is used. 2
Is sufficiently solidified, and it is confirmed that the floor base material 1 does not settle due to the weight of the holding jig 30, the holding jig is removed in a state where not only the weight 22 but also the adjustment jig body 21 is removed. The fixtures 30 may be directly placed on the surface of the lined floor substrate 1. When the width of the concrete slab C is large, the left and right side surfaces C of the concrete slab C are used.
By arranging the floor base materials 1 in rows using the level adjusting jig 20 not only along a and Ca but also at an appropriate position therebetween, the level of the floor panel 10 is adjusted with higher accuracy. Can be obtained.

The above method may be repeated several times to lay the floor panel 10 on the entire surface of the concrete slab C.
The entire surface may be performed by one operation. In any case, it is possible to adjust the level of the floor panel 10 in a wide area with a small number of the level adjusting jigs 20, and the construction cost is greatly reduced. Even in the former case, the level adjustment jig 20 (adjustment jig main body 2) according to the present invention is used.
1) is merely riding on the concrete slab surface, and can be easily moved from the first use place to the next use place, and the work is extremely easy.

FIG. 5 shows another embodiment of the present invention. This embodiment is effective as a construction method when the distance between the concrete slab C and the floor finish surface cannot be made large. In the level adjusting jig used in this embodiment, the adjusting jig main body 21 is the same as that described with reference to FIGS. 3 and 4, but the bulging portion 22b in which the shape of the weight 22a is convex on the lower surface.
Is different. The method of using this level adjustment jig is the same as that described with reference to FIGS. 3 and 4, but the floor base material 1 is thinner.

At the time of construction, first, thin floor base materials 1, 1 are arranged in rows along the left and right side surfaces Ca, Ca of the concrete slab C in the same manner as described with reference to FIGS. (FIG. 5a). After the foamable urethane resin 2 is sufficiently solidified, the weight 22a and the adjusting jig main body 21 are removed, and the second floor base material 1a made of the same material is placed between the floor base materials 1 and 1 provided. Then, a required number of floor base materials 1a having foamable urethane resin solution 2a applied on the back surface at required intervals are arranged at required intervals. Even in this case, the floor base material 1a may be placed on the concrete slab C after the foamable urethane resin solution 2a is applied to the surface.

Next, the ascending movement of the second flooring material 1a caused by the foaming of the foamable urethane resin solution 2a between the flooring materials 1 and 1 arranged in the above-mentioned row arranged at the same level. The holding jig 30 having a weight capable of holding the pressure is placed in the same manner as described with reference to FIGS. 1 and 2 (FIG. 5B).

After the foaming urethane resin 2a is solidified, the holding jig 30 is removed, whereby the floor covering material 1,
2nd flooring material 1a leveled to the same height as 1
Is disposed on the surface of the concrete slab C. Since the floor substrate 1 and the second floor substrate 1a have a function as a joist, the floor panel 10 is formed thereon by an ordinary method.
Can be laid (FIG. 5c).

When the area of the concrete slab C is small or the like, a floor base material whose level has been adjusted using the level adjusting jig may be provided over the entire surface of the concrete slab C. In that case, the operation using the “holding jig 30” described above becomes unnecessary,
After removing the weight 22a and the adjustment jig main body 21, the floor panel 10 can be laid directly.

FIG. 6 shows still another embodiment.
In this example, as the floor panel 10a, a synthetic resin foam material (for example, a polystyrene resin foam) is provided on the back surface of the plywood 11.
In addition to using a laminate of 12 layers, the floor base material 1b is also formed by cutting the same material as the floor panel 10a into a long shape. The method of arranging the floor base material 1b is as follows.
This can be performed in the same manner as the method described with reference to FIG. However, as the level adjusting jig, it is preferable to use a jig having a flat weight 22 having a lower surface as shown in FIGS. Since this method uses a thick floor base material and floor panels, it is effective as a construction method when it is necessary to increase the distance between the concrete slab C and the finished floor surface.

FIG. 7 shows the floor base materials 1, 1a and 1b and the floor panel 1 according to the method described with reference to FIG. 5 or FIG.
The case where a floor is constructed by laying a flooring material 40 as an example of a floor finishing material on a floor surface on which 0 and 10a are laid is described. Since the floor panels 10 (10a) laid by the above method are leveled and leveled, it is possible to reliably lay the conventionally known flooring material 40 by nailing or sticking with an adhesive. it can.

The above is a description of some preferred embodiments of the present invention, and there are many other variations. For example, although not shown, a level adjusting jig having a form in which screws 24 functioning as legs are screwed into four corners of a steel plate may be used. In this case, a material having a weight capable of suppressing the upward movement of the floor base material caused by foaming of the foamable resin bonding material by itself is used. When the level adjusting jig of this embodiment is used, first, a foamable resin bonding material solution is preferably applied in a point-like manner to a place where a floor base material for level adjustment is to be provided, and the floor base material is applied thereon. The material 1 is arranged, and then the level adjusting jig is fixedly arranged thereon. The advance adjustment of the legs (screw 24) may be performed in advance or after the arrangement. Fine adjustment may be performed after the arrangement.

In this case, the upward movement of the floor base material caused by the foaming of the foamable resin bonding material solution is regulated by abutting against the back surface of the steel plate as the top plate of the level adjustment jig. The level matching surface is the back surface of the steel plate.
Subsequent steps may be the same as those described above.

In the above description, the method of arranging the floor base material on the concrete slab has been described. The method of arranging the floor base material is the same as the method of arranging the floor base material (base material) of the wooden detached house. Can be applied. In this case, a thin tatami mat can be used as the flooring material.

Further, although not shown, as a floor base material or a floor panel, in addition to a plywood or a laminate of a foamed resin material on the back surface of the plywood, for example, a wooden material ( Natural materials, plywood, particle boards, etc.) embedded at predetermined intervals can also be used. In this case, the buried wood portion is used as a nailing portion.

[0042]

As described above, according to the present invention, it is necessary to adjust the level of the floor base material when the floor base material is provided by using the foamable resin bonding material, while being portable and required. Since the adjustment is performed using a level adjustment jig that can be placed non-fixedly at the place, the installation work is simplified, and the level adjustment jig is extremely easy to use repeatedly, reducing the construction cost. Brought. In addition, it is possible to easily adjust the amount of advance of the leg of the level adjustment jig before or during the work, and fine adjustment can be performed on the floor for unevenness (unevenness) on the floor base each time. it can.

Further, the level adjustment of the floor base material is performed using the above-mentioned level adjusting jig only at specific places such as both side portions of the concrete slab, and the remaining portions are level adjusted using another holding jig. Therefore, even when arranging the floor base material or floor panel on a large area, the operation can be performed with a small number of level adjusting jigs, and the operation can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a floor panel is further constructed on a concrete slab surface on which a floor base material is arranged by the method of the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is an exploded perspective view illustrating a level adjusting jig and a method of using the same.

FIG. 4 is a perspective view illustrating a state in which the level of a floor base material is being adjusted by a level adjusting jig.

FIG. 5 is a sectional view illustrating another embodiment of the present invention.

FIG. 6 is a sectional view illustrating still another embodiment of the present invention.

FIG. 7 is a diagram for explaining a method of constructing a floor on which floor finishing materials are laid according to the present invention.

[Explanation of symbols]

1, 1a: Floor base material, 2a: Foamable resin bonding material (solution) (foamable urethane), 20: Level adjustment jig, 21
... Adjustment jig body, 22 (22a) ... Additional weight, 10 ... Floor panel, 30 ... Holding jig, C ... Concrete slab

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Yachinaka, 2437-2 Mizumi, Sawamachi, Sarushima-gun, Ibaraki Pref.

Claims (11)

[Claims] 1. A method of arranging a floor base material, wherein the level adjusting jig has a weight capable of suppressing upward movement of the floor base material caused by foaming of a foamable resin bonding material,
And, using a portable level adjustment jig with legs that can adjust the amount of advancement, place the foamable resin bonding material liquid and the floor base material in the place where the floor base material is to be installed, Further, the level adjusting jig is fixedly arranged, and the level of the leg is adjusted by adjusting the amount of advance of the leg, if necessary. While the movement is regulated by the level adjusting jig, the solidification of the expandable resin joining material is waited, and after the solidifying of the foamable resin joining material, the level adjusting jig is removed to form a level-matched floor base material. A method of arranging floor base material, characterized by that. 2. A method for arranging a floor base material, wherein the level adjusting jig has a weight capable of suppressing upward movement of the floor base material caused by foaming of a foamable resin bonding material,
In addition, using a portable level adjustment jig having legs that can adjust the amount of advancement, the level adjustment jig is non-fixedly arranged at the place where the floor base material is to be arranged, and A level adjustment is performed by adjusting the amount of advance of the leg in accordance with the above, a floor base material coated with a foaming resin bonding material liquid on the back surface is arranged in the level adjustment jig, and is caused by foaming of the foaming resin bonding material. Waiting for solidification of the expandable resin joining material in a state where the upward movement of the floor base material is regulated by the level adjusting jig, and removing the level adjusting jig after solidifying the foamable resin joining material, the level is adjusted. A method of arranging a floor base material, wherein the floor base material is formed. 3. The floor base material arrangement according to claim 1, wherein a level adjusting jig composed of a jig body and an additional weight is used as the portable level adjusting jig. Installation method. 4. The method according to claim 1, further comprising the steps of: disposing the first floor base material that is leveled in a row at predetermined intervals and using the floor base material according to any one of claims 1 to 3. After or without removing the adjusting jig, as a next step, a required number of foamable resin bonding materials and a second number of flooring materials are arranged between the first flooring materials arranged in a row. Or, after arranging a required number of second floor base materials coated with a foamable resin bonding material liquid on the back surface, foaming of the foamable resin bonding material is performed between the row-shaped first floor base materials. A holding jig having a weight capable of holding down the rising movement of the second floor base material is placed, and the holding jig is configured to move the second floor base material upward due to foaming of the expandable resin bonding material. Waiting for the foaming resin joining material to solidify under the regulation of By removing the holding jig later, a second floor base material having the same level as the first floor base material is further formed, and a required floor panel is formed on the first and second floor base materials. A floor panel construction method characterized by laying a floor. 5. The method according to claim 1, wherein the first floor base material is arranged in a row at predetermined intervals and adjusted in level. After or without removing the adjusting jig, as a next step, a required number of foamable resin bonding material liquids and floor panel materials are arranged between the row-shaped first floor base materials. Or, after arranging a required number of floor panel materials coated with a foamable resin bonding material liquid on the back surface, a floor panel generated by foaming of the foamable resin bonding material is provided between the row-shaped first floor base materials. A holding jig having a weight capable of holding the upward movement of the resin is placed, and the upward movement of the floor panel caused by foaming of the foaming resin joining material is restricted by the holding jig to solidify the foaming resin joining material. Wait for the foaming resin joining material to solidify By removing a construction method of the first floor panel to the underfloor member, characterized in that the same level as has been the floor panel form. 6. The floor panel construction method according to claim 4, wherein plywood is used as the floor base material. 7. The floor panel construction method according to claim 4, wherein a wooden board is laminated or buried at a predetermined interval on an upper surface of a foamed polystyrene resin board as the floor base material. 8. The floor panel construction method according to claim 4, wherein a wooden board is laminated on an upper surface of a foamed polystyrene resin board as the floor panel. 9. The method according to claim 5, wherein a part of the floor panel is used as the floor base material. 10. A floor construction method, wherein a flooring material is laid on a floor surface constructed by the floor panel construction method according to claim 3. 11. A flat plate or frame having a square shape, and legs provided at four corners thereof, wherein the length of the legs from the rear surface of the flat plate or the frame is changeable. A level adjustment jig for use in arranging the flooring material.