Concrete baseboard installation method and concrete baseboard

Abstract

This invention provides a method for installing concrete baseboards that allows for efficient installation while maintaining a good finished appearance. [Solution] This construction method comprises the following steps: A step of fixing positioning members 8, which position the lower end of the formwork 10, to the floor surface of the floor 2 at intervals parallel to the wall. A step of installing the formwork 10 on the positioning members 8. A step of pouring concrete between the wall and the formwork 10. A step of removing the formwork 10 after the concrete has hardened to a predetermined extent. A step of removing the extended portion 8X of the positioning member 8 by bending the positioning member 8 at the bending point 8N located inside the baseboard 1. A grout-stopping joint bar 11 is attached to the lower end of the formwork 10, positioned between adjacent positioning members 8 and in contact with the floor surface of the floor 2.

Description

Technical Field

[0001] The present invention relates to a method for constructing a concrete skirting board and a concrete skirting board.

Background Art

[0002] The following Patent Document 1 discloses a method for placing a concrete skirting board at the boundary between a placed concrete floor and a wall. In the invention of the following Patent Document 1, a film is attached to the inner surface of a formwork for forming the skirting board, and the formwork is removed and troweled before the concrete filled in the formwork is completely cured. According to this construction method, there is no need to perform a finishing process again after the concrete of the skirting board is cured, and the construction can be carried out quickly.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, in a warehouse, a forklift is used, and a concrete skirting board may be constructed to protect the wall from the collision of the forklift. When placing the concrete skirting board, the mortar may leak from the crossbars of the formwork. The leaked mortar is repaired by chiseling or hacking, but the finish appearance deteriorates. In addition, additional operations such as hacking occur, and man-hours are required for this, resulting in an increase in construction costs.

[0005] An object of the present invention is to provide a method for constructing a concrete skirting board and a concrete skirting board that can be constructed with a good finish appearance and efficiently.

Means for Solving the Problems

[0006] The method for constructing a concrete baseboard according to the first invention comprises the steps of: fixing a plurality of positioning members for positioning the lower end of the formwork for casting the concrete baseboard on the floor surface of a poured concrete floor, at intervals parallel to the wall; installing the formwork on the positioning members; pouring concrete to form the concrete baseboard between the wall and the formwork; removing the formwork after the concrete has hardened to a predetermined extent; and removing the extension portion of the positioning member that extends from the concrete baseboard by bending the positioning member at a bending point located inside the formed concrete baseboard, wherein a grout-stopping joint bar is attached to the lower end of the formwork, positioned between adjacent positioning members and in contact with the floor surface.

[0007] The concrete baseboard according to the second invention is a concrete baseboard installed by the concrete baseboard installation method described above. [Effects of the Invention]

[0008] According to the concrete baseboard construction method and concrete baseboard of the present invention, construction can be carried out efficiently while maintaining a good appearance. [Brief explanation of the drawing]

[0009] [Figure 1] This is an external perspective view of a concrete baseboard according to an embodiment. [Figure 2] This is a cross-sectional view of the concrete baseboard during construction. [Figure 3] This is an enlarged cross-sectional view at the position of the positioning member. [Figure 4] This is a perspective view of the positioning member. [Modes for carrying out the invention]

[0010] A concrete baseboard 1 according to this embodiment and its installation method will be described with reference to the drawings. Figure 1 shows the concrete baseboard 1 after installation. Hereinafter, the concrete baseboard 1 will also be simply referred to as baseboard 1. In Figure 1, the cross-section of the baseboard 1 is shown by a dotted line. The baseboard 1 of this embodiment is installed along the inner wall surface of a cold storage warehouse located inside a building. The baseboard 1 is installed along the lower end of the wall 3 at the corner between the concrete floor 2 and the wall 3. Hereinafter, the concrete floor 2 will also be simply referred to as floor 2. The cross-sectional dimensions of the baseboard 1 are, for example, 100 mm in thickness and 300 mm in height.

[0011] The floor 2 has already been poured prior to the pouring of the baseboard 1. The wall 3 is constructed on top of the floor 2 to partition the interior of the building. The structure and composition of the wall 3 are not particularly limited. However, in this embodiment, since the wall 3 is the wall of a cold storage warehouse, insulation material is placed inside the wall 3, or the wall 3 is constructed of insulation panels. Also, as mentioned above, in this embodiment, the baseboard 1 is installed in the cold storage warehouse. For this reason, the floor structure in this embodiment is also designed with the cold storage warehouse in mind. Specifically, two sheets of 50 mm thick expanded polystyrene insulation material 5 are laid between the floor 2 and the lean concrete 4. The floor 2 is poured on top of the insulation material 5, and reinforcing bars 6 are also placed inside it. The baseboard 1 is poured separately after the pouring of the floor 2 and the construction of the wall 3.

[0012] The following describes the installation method for baseboard 1. Understanding the installation method will also help you understand the structure of baseboard 1 after it has been installed.

[0013] As described above, prior to the installation of the baseboard 1, the floor 2 is poured and the wall 3 is constructed. First, protective tape 7 (see Figure 3) is applied to the floor 2 parallel to the wall 3, so that the side edge is 90 mm from the wall 3. In Figure 3, the protective tape 7 is drawn thicker for clarity. The thickness of the baseboard 1 is 100 mm, and 10 mm of the protective tape 7 penetrates into the interior of the baseboard 1 when it is poured. The protective tape 7 is removed after the baseboard 1 is poured, and the portion that has penetrated is also removed at this time. The dimension that penetrates into the interior of the baseboard 1 may be 5 mm. The protective tape 7 is applied to neatly finish the boundary between the baseboard 1 and the floor 2. In this embodiment, protective tape 7 was used because it is easy to use, but it is not limited to protective tape 7 as long as it is a sheet material that can be removed after the baseboard 1 is poured.

[0014] Next, the positioning member 8 shown in Figure 4 is placed at intervals on the floor 2 surface via masking tape 7 and fixed to the floor 2. As shown in Figure 3, the positioning member 8 is fixed to the floor 2 by screws 9A, but the position of the screws 9A is somewhere between the wall 3 and 90 mm, and the screws 9A are located inside the baseboard 1 that is to be cast. The positioning member 8 determines the position of the formwork 10 for casting the baseboard 1 and also prevents the lower end of the formwork 10 from shifting during casting. The positioning member 8 in this embodiment is made of metal, and as shown in Figure 4, a notch 8N is formed at the bending point in the middle. After the baseboard 1 is cast, the positioning member 8 is bent at the notch 8N, the extension portion 8X at the tip is removed, and the retaining portion 8Y at the base end is retained inside the cast baseboard 1 together with the screws 9A.

[0015] The positioning member 8 is fixed to the floor 2 such that the position of the notch 8N is 90mm to 100mm from the wall 3. If the position of the notch 8N is too far inward from the outer surface of the baseboard 1 to be cast, it will be difficult to fold the positioning member 8 after the baseboard 1 has been cast, or the lower end of the baseboard 1 may crack when the positioning member 8 is folded. It is preferable that the positioning member 8 is fixed to the floor 2 such that the entire notch 8N is just inside the baseboard 1. The notch 8N is formed in a pair of flanges 8F formed on both side edges of the positioning member 8. In addition, a through hole 8H1 is formed between the pair of notches 8N to make it easier to fold the positioning member 8. Furthermore, a screw hole 8H2 for a screw 9A is also formed on the base end side of the positioning member 8. A retaining piece 8T for holding the formwork 10 from the outside is erected at the tip of the positioning member 8. Along with the flanges 8F, a bead 8B for ensuring rigidity is also formed on the positioning member 8 along its entire length. By ensuring the rigidity of the positioning member 8, it becomes easier to fold the positioning member 8 at the notch 8N, which is the bending point. In this embodiment, two positioning members 8 are assigned to one formwork 10.

[0016] The positioning member 8 in this embodiment is made of metal, but it may be made of other materials such as resin. However, if it is made of wood or the like, the part that is placed inside the baseboard 1 may rot, so it is preferable that it be made of metal or resin so that it can be stably placed inside the baseboard 1 after it has been cast. Also, the positioning member 8 is broken at the notch 8N after the baseboard 1 has been cast, and if it is made of metal or resin, it can be made to be easily broken.

[0017] Next, the formwork 10 is installed on the positioning member 8. Multiple formwork pieces 10 are prepared and arranged in a line parallel to the wall 3. The lower end of the outer surface of the formwork 10 is pressed against the holding piece 8T of the positioning member 8 to position the formwork 10. As shown in Figure 2, a grout-stopping joint bar 11 is also attached to the lower surface of the formwork 10. When the formwork 10 is installed, a base plate 12 and a bracing plate 13 that hold the formwork 10 from the outside are also installed. On the inner surface of the formwork 10, a square-section joint bar (not shown) that forms a joint 14 (see Figure 1) in the baseboard 1, or a triangular-section chamfer (not shown) that forms a tapered edge 15 (see Figure 1) on the upper edge of the baseboard 1 may be attached.

[0018] In this embodiment, the grout-stopping joint bar 11 is attached to the underside of the formwork 10. At the installation positions of the positioning members 8, the grout-stopping joint bar 11 is spaced at a distance equal to the width of the positioning member 8. The grout-stopping joint bar 11 is also interrupted at the joints of the formwork 10, but at these joints, the end faces are in contact with each other without any gaps. In other words, the grout-stopping joint bar 11 is installed intermittently, avoiding the positioning members 8, by installing the formwork 10. The thickness of the grout-stopping joint bar 11 is approximately equal to the thickness of the positioning members 8. By providing the grout-stopping joint bar 11, it is possible to prevent grout leakage and to finish the lower end of the baseboard 1 and the floor 2 neatly, eliminating the need for scraping or chipping work. The grout-stopping joint bar 11 may also be attached to the formwork 10 so as to be flush with the underside of the formwork 10. However, in this case, it is necessary to form a groove on the lower surface of the formwork 10 such that the positioning member 8 fits into the installation position of the positioning member 8.

[0019] The floor joist 12 and the bracing 13 are constructed of wooden lumber and nails, and firmly hold the formwork 10 during the placement of the sill 1. In this embodiment, the floor joist 12 is not directly nailed or screwed to the floor 2, but is held by the angle member 16 as shown in FIG. 2. The angle member 16 is a metal member having an L-shaped cross section and is about 50 mm in length. A plurality of angle members 16 are arranged in parallel to the wall 3 at intervals and are fixed to the floor 2 by screws 9B. The floor joist 12 is a long member parallel to the wall 3 and is positioned by the angle member 16. The bracing 13 is attached between the floor joist 12 and the formwork 10 so that the formwork 10 is erected vertically. Since screws 9B are used to fix the angle member 16 to the floor 2, it is finally necessary to repair the screw holes of the screws 9B, but the number of repair points can be reduced as much as possible. Also, when placing the sill 1, no holes or the like are formed in the floor 2 other than the screw holes of the screws 9B.

[0020] After the formwork 10 is installed, the sill 1 is placed. At the time of placing the floor 2, the cross bars 17 extend upward from the reinforcing bars 6 inside the floor 2. A plurality of cross bars 17 are provided at intervals along the wall 3, and horizontal bars are also attached to the cross bars 17 before the formwork 10 is erected. Concrete is poured between the formwork 10 and the wall 3. The upper surface of the poured concrete is leveled with a trowel or the like. After the concrete of the sill 1 has developed a predetermined strength, the floor joist 12, the angle member 16, the bracing 13, and the formwork 10 are removed. After the concrete of the sill 1 has hardened, the positioning member 8 is folded at the notch 8N, and the extending portion 8X extending from the sill 1 is removed. The curing tape 7 pasted on the floor 2 is also removed.

[0021] Hereinafter, the advantages of the method for constructing the sill 1 according to the above embodiment will be described.

[0022] The construction method of the concrete coping 1 according to the above embodiment includes the following steps. (1) A step of fixing a plurality of positioning members 8 for positioning the lower end of the formwork 10 for casting the concrete coping 1 at intervals parallel to the wall 3 on the floor surface of the cast concrete floor 2. (2) A step of installing the formwork 10 on the positioning members 8. (3) A step of casting concrete for forming the concrete coping 1 between the wall 3 and the formwork 10. (4) A step of removing the formwork after the concrete has developed a predetermined strength. (5) A step of removing the extending portion 8X of the positioning member 8 extending from the concrete coping 1 by folding the positioning member 8 at the folding starting point located inside the formed concrete coping 1, that is, at the notch 8N in the above embodiment. Here, at the lower end of the formwork 10, a caulking joint bar 11 that contacts the floor surface of the concrete floor 2 and is located between adjacent positioning members 8 is attached.

[0023] According to the construction method according to the above embodiment, the caulking joint bar 11 can prevent the leakage of the caulking and can neatly finish the boundary between the coping 1 and the floor 2 after construction. Therefore, there is no need to perform the operations of chamfering and hacking after casting the coping 1, and the coping 1 can be efficiently constructed. Also, when casting the concrete of the coping 1, the positioning member 8 that holds the formwork 10 during casting has its extending portion 8X folded and removed after casting the coping 1. Therefore, the positioning member 8 surely holds the lower end of the formwork 10 during casting and contributes to the improvement of the finishing state of the boundary between the coping 1 and the floor 2 described above, and after casting, unnecessary parts are removed, so the construction efficiency is improved.

[0024] Furthermore, in the construction method according to the above embodiment, the positioning member 8 is made of metal or resin, has a notch 8N formed at the bending point, and is fixed to the floor surface of the concrete floor 2 by a retaining portion 8Y that is retained inside the concrete baseboard 1 other than the extension portion 8X. Because a notch 8N is formed at the bending point, after the baseboard 1 is installed, the positioning member 8 can be bent at a predetermined position to remove the extension portion 8X, thereby improving the finished appearance. If the positioning member 8 is made of metal or resin, it is easy to bend, and its retaining portion 8Y can be stably retained inside the baseboard 1. In addition, since the positioning member 8 is fixed to the floor 2 by its retaining portion 8Y, the screws 9A for fixing are also hidden inside the baseboard 1 after pouring, so the marks of screw holes in the floor 2 can be minimized. Also, since the extension portion 8X is not fixed to the floor 2, it is easier to remove it later.

[0025] In the construction method according to the above embodiment, a protective tape 7 is applied to the floor surface of the concrete floor 2 as a sheet material interposed between the floor surface of the concrete floor 2 and the grout-stopping joint bar 11, and the protective tape 7 as a sheet material is removed after the concrete baseboard 1 is poured. By applying the protective tape 7 as a sheet material to the boundary between the baseboard 1 and the floor 2 after construction and removing it after the baseboard 1 is poured, the finished state of this boundary can be further improved.

[0026] The concrete baseboard 1 constructed by the construction method according to the above embodiment can be installed efficiently and with a good finished appearance. To determine whether or not the concrete baseboard 1 was constructed by the above construction method, it is necessary to destroy the baseboard 1 after construction, but it can be determined by destroying it. By destroying it, it is possible to determine whether the baseboard 1 was precast or poured on site using formwork 10. Furthermore, according to the above construction method, the retaining portion 8Y of the positioning member 8 and the screw 9A that fixes this retaining portion 8Y to the floor 2 are retained inside the baseboard 1, and these can be found by destroying the baseboard 1.

[0027] It is also possible to precast concrete baseboards in advance and then move and install the precast concrete baseboards at the installation site. However, since each baseboard is very heavy, transportation is not easy, and there is a risk of damage during transportation. Furthermore, this embodiment is specifically for installation in a cold storage warehouse. As it is a cold storage warehouse, as shown in Figure 2, two sheets of expanded polystyrene insulation material 5 are laid beneath the concrete floor 2. In such a cold storage warehouse structure, it is difficult to accurately install precast concrete baseboards on top of the insulation material 5.

[0028] Considering the difficulty of installation, it is conceivable to install precast baseboards on lean concrete rather than on the insulation material, and then install the insulation material and pour the concrete floor. However, with such a structure, the height of the baseboards, whose lower parts are buried, increases, increasing their weight and making transportation even more difficult, and installation is not easy due to the heavy weight. In addition, the material cost of the baseboards also increases. Furthermore, since the baseboards penetrate the insulation material, heat can easily be transferred from below into the cold storage warehouse through the baseboards. Therefore, in the case of such a cold storage warehouse, it is preferable to pour the baseboards 1 on the floor 2 as in this embodiment. In other words, the structure of baseboard 1 and its construction method in this embodiment are preferable as baseboards for cold storage warehouses.

[0029] Furthermore, the present invention is not limited to the above-described embodiments and their modifications, and can be implemented in various forms. Also, the scope of rights encompassed by the present invention is not limited to the above-described embodiments and their modifications. For example, in the above embodiments, the baseboard 1 was installed inside the building, i.e., indoors. However, the baseboard of the present invention may be installed outdoors. Also, although the baseboard 1 in the above embodiments was a protruding baseboard, it may also be a recessed baseboard or a flush baseboard. Furthermore, although the wall 3 in the above embodiments was constructed separately from the concrete floor 2, it may also be a wall that is cast and constructed integrally with the concrete floor 2. [Explanation of Symbols]

[0030] 1. Concrete baseboard 2. Concrete floor 3 walls 7. Masking tape (sheet material) 8 Positioning member 8N Notch (Folding Point) 8X extension 8Y Indwelling 10 formwork 11. Joint sealing bar

Claims

1. A method for installing concrete baseboards, The process involves fixing multiple positioning members, which position the lower end of the formwork for pouring the concrete baseboard, to the floor surface of the poured concrete floor at intervals parallel to the wall, and The steps include: installing the formwork on the positioning member, A step of pouring concrete to form the concrete baseboard between the wall and the formwork, The process of removing the formwork after the concrete has hardened to a predetermined degree, The method includes the step of removing the extension portion of the positioning member that extends from the concrete baseboard by bending the positioning member at the point where the bending origin is located inside the formed concrete baseboard, A method for constructing a concrete baseboard, wherein a grout-stopping joint bar is attached to the lower end of the formwork, positioned between adjacent positioning members and in contact with the floor surface.

2. The method for installing a concrete baseboard according to claim 1, wherein the positioning member is made of metal or resin, has a notch formed at the bending point, and is fixed to the floor surface by a retaining portion that is placed inside the concrete baseboard other than the extended portion.

3. A method for constructing a concrete baseboard according to claim 1 or 2, wherein a sheet material is attached to the floor surface to be interposed between the floor surface and the grout-stopping joint bar, and the sheet material is removed after the concrete baseboard has been poured.

4. A concrete baseboard installed by the concrete baseboard installation method described in claim 1 or 2.

Images