JP2021001486A - Formwork for joint basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a formwork for a meeting place box which can be smoothly removed and disassembled without damaging the concrete surface of the produced meeting place box. SOLUTION: An outer form A and an inner form B of a form for a meeting place are assembled into a rectangular frame shape that can be disassembled by four wooden outer frame panels 1 and inner frame panels 2, respectively, and inside. Vertical crosspieces 3 that connect the inner frame panels 2 and 2 that are adjacent to each other at right angles by nailing are arranged at the four inner corners of the formwork B. Further, the inner frame panel 2 is divided into a panel half and a panel other half, and a horizontal crosspiece 4 is nailed to the inner surface of the inner frame panel 2 composed of these panel half and the other half. The inner formwork B can be disassembled by removing the vertical stile 3 and the horizontal stile 4, and then sequentially removing and disassembling one half of the panel of the inner frame panel 2 and the other half of the panel. doing. [Selection diagram] Fig. 1

Description

The present invention relates to a formwork for producing a concrete meeting place box.

Conventionally, in residential areas, etc., drainage facilities are configured so that sewage and drainage generated in each household are once collected in a meeting place basin through pipes and led to a sewage main or sewage main through this meeting place basin. Is being constructed.

In order to produce the above-mentioned meeting place used in such a drainage facility, for example, as described in Patent Document 1, an outer frame formed by combining four outer frame panels made of metal plates and an outer frame made of four metal plates are used. A mold composed of an inner frame made by combining four metal plate inner frame panels formed in an L-shaped cross section is used, and is formed between the outer frame and the inner frame of this mold. It is made by placing concrete, hardening the concrete, and then removing the formwork.

As mentioned above, if a heavy metal formwork is used to make a meeting place box, it becomes difficult to handle and it is necessary to connect adjacent panels with bolts to combine them, which makes the frame and dismantling work difficult. It becomes complicated and concrete leakage is unavoidable.

On the other hand, as described in Patent Document 2 as a prior art, when a wooden formwork is used as a formwork for manufacturing a meeting place basin (water collecting basin), it is lightweight, has excellent handleability, and facilitates framing and dismantling work. It also has the advantage that the framework can be formed without gaps.

However, in the conventionally used wooden formwork, as shown in FIG. 14, the outer formwork 11 usually uses an outer frame panel 11a composed of four wooden boards, and two outer frame panels 11a. , 11a are arranged on the left and right at regular intervals, and the both side end faces of the outer frame panels 11a and 11a arranged in the front and rear on the opposite inner side surfaces at both ends of the outer frame panels 11a and 11a are butted. It is assembled by joining and nailing 14 from the outer surfaces of the front and rear ends of the front and rear outer frame panels 11a and 11a toward the front and rear outer frame panels 11a and 11a.

Further, the inner formwork 12 uses an inner frame panel 12a made of four wooden boards, and square bars are formed on the inner surfaces of both front and rear inner frame panels 12a and 12a arranged at regular intervals in the front and rear. By applying the shapes of the crosspieces 13 and 13 and driving nails 15 into the front and rear inner frame panels 12a and 12a from these crosspieces 13 and 13, nails 15 are driven into the inner surfaces of the front and rear inner frame panels 12a and 12a. The stiles 13 and 13 are fixed to the front and rear inner frame panels 12a and 12a, and the opposite inner surfaces at both front and rear ends of the stiles 13 and 12a are arranged on both side end faces of the front and rear inner frame panels 12a and 12a. By hitting the sides and driving nails 15 into the front and rear ends of the inner frame panels 12a and 12a on both sides from these stiles 13 and 13, the inner frame panels 12a and 12a on both sides are fixed to the front and rear stiles 13 and 13. It is assembled.

Concrete is poured into the space between the outer formwork 11 and the inner formwork 12 configured as described above, and the inner and outer formwork 11 and 12 are disassembled after the concrete has hardened to create a concrete meeting place box. There is.

Japanese Unexamined Patent Publication No. 8-199670 Japanese Unexamined Patent Publication No. 9-57735

According to the formwork configured as described above, when concrete is placed between the inner and outer formwork 11 and 12 and then the formwork is disassembled, the outer formwork 11 is formed at both corners of the outer frame panel 11a. Since the surfaces that are connected at right angles do not form the molded surface of the meeting place, after pulling out the outer frame panels 11a and the nails 14 that fix the 11a to each other, use a bar to use the outer frame panels 11a on both sides. , 11a and the front and rear outer frame panels 11a and 11a can be easily disassembled from the concrete surface without damaging the concrete surface of the meeting place, but in the inner formwork 12, four sheets are used. Since the inner formwork panels 12a of the above are combined as described above, it is difficult to disassemble the concrete surface without damaging it.

That is, in the inner frame panels 12a and 12a before and after the inner formwork 12, the end faces on both sides are in contact with the inner surfaces of the front and rear ends of the inner frame panels 12a and 12a on both sides, so the crosspieces 13 on all sides are removed. After that, the front and rear inner frame panels 12a and 12a can be easily peeled off from the concrete surface by sliding the both end faces along the inner surfaces of the both side inner frame panels 12a and 12a by the crowbar. In the frame panels 12a and 12a, the concrete surfaces forming the inner corners of the meeting place are in close contact with the corners of the front and rear ends, so after dismantling the front and rear inner frame panels 12a and 12a, the crowbar When trying to remove the inner frame panels 12a and 12a on both sides, the corners of the front and rear ends are rubbed so as to bite into the concrete surface formed by the front and rear inner frame panels 12a and 12a to scrape the concrete surface. There will be a problem that it will be damaged and disassembly will not be smooth.

The present invention has been made in view of such problems, and an object of the present invention is not only that it is easy to assemble, but also that it can be smoothly unframed and disassembled without damaging the concrete surface of the produced meeting place box. It is to provide a formwork for the meeting place that can be done.

In order to achieve the above object, the formwork for the meeting place of the present invention is an outer formwork assembled in a rectangular frame shape by wooden both side outer frame panels and front and rear outer frame panels as described in claim 1. And an inner formwork assembled in a rectangular frame shape by wooden side inner frame panels and front and rear inner frame panels, and the inner frame panels adjacent to each other at right angles in the outer formwork are nailed so as to be disassembleable. On the other hand, all the inner frame panels of the inner form are divided into two in the vertical direction to form one half of the panel and the other half of the panel, and the edge of one inner frame panel in the inner frame panels adjacent at right angles. The end face of the other inner frame panel is in contact with the inner surface of the part, and it is nailed to the vertical crosspieces arranged at the inner corners of the four corners of the inner formwork so that it can be disassembled. Horizontal stiles are attached to several places on the inner surface of the front and rear inner frame panels at intervals in the vertical direction, and these horizontal stiles are removablely nailed to one half of the panel and the other half of the panel in all the above inner frame panels. It is characterized by wearing it.

In the invention according to claim 2 in the formwork for a meeting place configured as described above, the inner formwork is the inner surface of the opposite end portion of the inner frame panel of either the both side inner frame panels or the front and rear inner frame panels. In addition, it is characterized in that it is assembled in a rectangular frame shape with both end faces of the other inner frame panel in contact with each other.

On the other hand, according to the third aspect of the present invention, in the above inner formwork, the end surface at one end of one of the inner frame panels on both sides and the front and rear inner frame panels is perpendicular to one end side of the inner frame panel. The inner surface of the end of the other adjacent inner frame panel is brought into contact with the inner surface of the other end of the one inner frame panel, and the other inner frame panel adjacent to the inner surface of the other end of the inner frame panel at right angles to the other end side of the inner frame panel. It is characterized in that the end faces of the above are in contact with each other.

Further, the invention according to claim 4 is characterized in that a cutting beam is interposed between horizontal crosspieces facing each other in parallel.

According to the invention of claim 1, after concrete is cast and hardened on the formwork for the meeting place which is composed of the outer formwork and the inner formwork, the meeting place basin is produced, and then the outer formwork is formed from the meeting place basin. When disassembling the inner formwork by demolding, the outer formwork is combined in a rectangular frame shape by the outer frame panels on both sides and the front and rear outer frame panels, and the inner frame panels adjacent at right angles can be disassembled. Since it is worn, each outer frame panel can be easily disassembled in the direction away from the concrete surface of the meeting place without causing damage or damage to the concrete surface by releasing the nailing.

Further, the inner frame panel constituting the inner formwork is divided into two parts, one half of the panel and the other half of the panel, and the other is on the inner surface of one end of the inner frame panel adjacent to each other at a right angle. Since the end faces of the inner frame panel are brought into contact with each other and nailed to the vertical crosspieces arranged at the inner corners of the four corners of the inner formwork so that they can be disassembled, the inner frame panel is accurately rectangularized by the vertical crosspiece. Can be combined with shapes.

In addition, horizontal stiles are attached at several places on the inner surface of the inner frame panels on both sides and the front and rear inner frame panels at intervals in the vertical direction, and these horizontal stiles are attached to the panel half and the panel in all the inner frame panels. Since it is detachably nailed to the other half, even though the inner frame panel is divided into one half and the other half, concrete is cast in the formwork to make a meeting place. The concrete pressure acting on the outer surface of the inner frame panel is firmly received by the horizontal crosspiece, and the dividing surface between one half and the other half of the inner frame panel does not shift or delusion inward. It is possible to produce a concrete formwork with high accuracy by keeping it in close contact with each other.

In addition, all the inner frame panels that make up the inner formwork are divided into two parts, one half of the panel and the other half of the panel, as described above. Therefore, when the inner formwork is disassembled, the inner frame panel After removing the nails between the vertical crowbar and the horizontal crowbar, first, the end face on the side opposite to the split surface is brought into contact with the inner surface of the end of the inner frame panel adjacent at a right angle. When one half or the other half of the inner frame panel is peeled off from the concrete surface by a crowbar, the end surface of the one half or the other half of the inner frame panel is cut off from the inner frame adjacent to the right angle parallel to the dividing surface. The frame can be removed toward the hollow inside of the meeting place frame while sliding on the inner surface of the end of the panel.

At this time, one half or the other half of the inner frame panel stripped off by the crowbar is attached to the concrete surface of the meeting place where only the outer surface is made, and the attached area is small, so that the concrete surface is damaged. It can be easily removed from the concrete surface without causing or damaging it.

Similarly, one half or the other half of the other inner frame panel in which the end surface opposite to the dividing surface is in contact with the inner surface of the end portion of the inner frame panel adjacent at right angles is made of the concrete by a crowbar. When peeled off from the surface, one half or the other half of the inner frame panel in which the corner of the end opposite to the end on which the dividing surface is provided is attached to the concrete surface remains. One half or the other half of these inner frame panels also has a small adhesion area to the concrete surface, and the corners on the split surface side do not adhere to the concrete surface, so that the concrete surface of the meeting place is damaged or damaged. It can be easily peeled off from the concrete surface toward the hollow inside of the meeting place by the crowbar without causing it, and the work of disassembling the inner frame panel can be performed efficiently.

In order to form a rectangular frame-shaped inner formwork by combining the inner frame panels on both sides and the inner frame panels on the front and rear sides, either the inner frame panels on both sides or the inner frame panels on the front and back sides are used as described in claim 2. It may be assembled in a rectangular frame shape with both end surfaces of the other inner frame panel in contact with the inner surfaces of the opposite ends of one inner frame panel, and both sides as described in claim 3. The end surface at one end of one of the inner frame panel and the front and rear inner frame panels is brought into contact with the inner surface of the end portion of the other inner frame panel that is perpendicularly adjacent to one end side of the inner frame panel. The assembly structure may be such that the end surface of the other inner frame panel adjacent to the other end side of the inner frame panel is brought into contact with the inner surface of the other end of the one inner frame panel.

Further, as described above, the horizontal crosspieces are nailed to several places on the inner surface of the both side inner frame panels and the front and rear inner frame panels, and the horizontal crosspieces on both side inner frame panels and the front and rear inner frame panels facing each other in parallel. If a cutting beam is interposed between them as described in claim 4, the concrete pressure acting on the outer surface of the inner frame panel when concrete is placed in the formwork to make a meeting place basin is applied to the above-mentioned lateral direction. It can be more firmly received by the girder through the pier, and an accurate concrete meeting place is produced while surely preventing concrete from leaking into the inner formwork from the dividing surface of the inner frame panel. be able to.

Top view of the formwork for the Masu of the present invention. The exploded perspective view. A cross-sectional view of a formwork with concrete placed. Cross-sectional view of the outer formwork disassembled and removed. Cross-sectional view of the state where the vertical pier and the horizontal pier are removed and removed. The cross-sectional view of the state where the inner frame panel is started to be unframed. A cross-sectional view for explaining a procedure for disassembling the inner frame panel. Cross-sectional view of the prepared concrete meeting place Masu. The plan view of the whole formwork which shows the modification of the assembly structure of the inner formwork. A cross-sectional view of a formwork with concrete placed. Cross-sectional view of the outer formwork, vertical crosspiece, and horizontal crosspiece removed. The cross-sectional view which shows the first half process of disassembling the inner frame panel. The cross-sectional view which shows the latter half process of dismantling the inner frame panel. A cross-sectional view of a conventional formwork for a meeting place where concrete is placed.

Next, a specific embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the formwork for manufacturing the concrete meeting place C is made of a wooden rectangular plate having a constant thickness and width. It has an outer form A in which four outer frame panels 1, 1, 1, 1 are arranged in front, back, left and right and assembled in a rectangular frame shape, and has a constant thickness and a constant width narrower than the outer frame panel 1. The inner formwork B, which is assembled in a rectangular frame shape by arranging four inner frame panels 2, 2, 2, 2 made of wooden rectangular plates on the front, back, left and right, and the inner corners of the four corners of the inner formwork B. A vertical crosspiece 3 made of wooden square timber in which panels are connected to each other by being arranged and nailed to inner frame panels 2 and 2 adjacent to each other at right angles, and the inner frame panels 2 and 2 on both sides and the front and rear inner frame panels 2 It is provided with a horizontal crosspiece 4 made of wooden square timber, which is attached to several places on the inner surface of 2 and 2 at intervals in the vertical direction and is detachably nailed 6.

The outer form A is an outer frame in which the outer frames A are arranged on the inner surfaces facing each other on the left and right sides of the outer frame panels 1 and 1 facing each other at regular intervals on the left and right sides. The front and rear outer frame panels 1 are brought into contact with each other in a butt shape so that the left and right end surfaces of the panels 1 and 1 are abutted against each other. It is assembled in a rectangular frame shape by driving nails 7 into both end faces of 1 and 1, and is formed so that it can be easily disassembled by pulling out the nails 7.

On the other hand, all the inner frame panels 2 of the inner form B are vertically divided into two, and the inner frame panels 2 and 2 on both sides are formed into a panel half portion 2a and a panel other half portion 2b. In the front and rear inner frame panels 2 and 2, the panel is formed in a half portion 2c and a panel other half portion 2d. In this embodiment, the width of the panel half portion 2a of the inner frame panels 2 and 2 on both sides and the panel other half portion 2b is set to the front and rear inner frame panels 2 and 2 with the panel half portion 2c and the panel other half portion 2d. The width is formed to be wider than the width of the inner frame panel 2 by a width corresponding to the thickness of the inner frame panel 2.

Then, the end faces of both sides of the front and rear inner frame panels 2 and 2 are brought into contact with the inner surfaces of both front and rear inner frame panels 2 and 2, and the both side inner frame panels 2 and 2 and the front and rear inner frame panels 2 and 2 are brought into contact with each other. A rectangular frame-shaped inner formwork B is formed by the above, and the vertical crosspieces 3 are formed at the four inner corners of the inner formwork B, and the outer surfaces adjacent to the right angles of the vertical crosspieces 3 are adjacent to each other at right angles. Arranged in a state of being in contact with the inner surfaces of the frame panels 2 and 2, nails 5 are driven from the inner surface adjacent to the right angle of the vertical crosspiece 3 to the inner frame panels 2 and 2 adjacent to the right angle to form the inner frame. Panels 2 and 2 are connected to each other so that they can be disassembled.

The facing end faces of the panel one-half portion 2a and the panel other half portion 2b, which are abutting against each other in the two-sided inner frame panels 2 and 2, are divided surfaces 8, and similarly, the front and rear inner frame panels 2 and 2 The facing end faces of the panel half portion 2c and the panel other half portion 2d, which are in contact with each other, are the dividing surfaces 8'.

The horizontal crosspiece 4 provided vertically at predetermined intervals on the inner surfaces of the inner frame panels 2 and 2 on both sides and the inner surfaces of the front and rear inner frame panels 2 and 2 has an inner frame in a half in the length direction. Apply the other half to the panel other half 2a, 2c of the panel 2, and put the nail 6 on the panel other half 2b, 2d of the inner frame panel 2, and put the nail 6 on the panel 1 half 2a, of the inner frame panel 2. By driving into 2c and the other halves 2b and 2d, the panel 1 halves 2a and 2c and the other halves 2b and 2d are connected by this cross rail 4.

Further, the opposing horizontal beams 4 and 4 nailed to the inner surfaces of the inner frame panels 2 and 2 on both sides and the opposing horizontal beams 4 and 4 nailed to the inner surfaces of the front and rear inner frame panels 2 and 2. A cutting beam 9 is interposed between the four, and both end faces of the cutting beam 9 are pressed against the facing surfaces of the cross rails 4 and 4 facing each other.

In order to produce a concrete formwork C using the formwork for the meetinghouse basin constructed in this way, as shown in FIG. 3, concrete (ready-mixed concrete) is formed between the outer formwork A and the inner formwork B. It is done by placing.

When concrete is placed in the formwork, the divided surfaces 8 and 8'of the inner frame panel 2's panel half 2a and 2c and the panel other half 2b and 2d face inward on the outer surface of the inner frame panel 2. The concrete pressure acts in the direction in which the concrete pressure is to be opened, and the concrete pressure is received by the cutting beam 9 via the horizontal crosspiece 4, and the panel half portions 2a and 2c of the inner frame panel 2 and the panel other half portion 2b are received. , The concrete surface c of the meeting place C, which is produced by holding the outer surface of 2d in a state of being continuous with each other, can be beautifully finished.

After the concrete placed in the formwork is hardened, the outer formwork A and the inner formwork B are disassembled. To disassemble the outer formwork A, after pulling out the nails 7 that fix the ends of the outer frame panels 1 and 1 that are adjacent to each other at right angles, use a crowbar to remove the outer frame panels 1 on all sides. If the concrete surface c is peeled off from the concrete surface c of the concrete meeting place C produced by the frame panel 1, the concrete surface c can be easily unframed and disassembled without being damaged or damaged. FIG. 4 shows a state in which the outer formwork A is disassembled.

In order to disassemble the inner formwork B, first, the vertical crosspiece 3 provided in the inner corner of the formwork and the horizontal crosspiece 4 attached to the inner surface of the inner frame panel 2 are fixed to the inner frame panel 2. After removing these vertical crosspieces 3 and horizontal crosspieces 4 as shown in FIG. 5 by pulling out the nails 5 and 6, first, both end faces opposite to the dividing surface 8'are both side inner frame panels 2 and 2. The front inner frame panel 2 or the rear inner frame panel 2 that is in contact with the inner surface of the opposite end portion of the above is disassembled.

For example, as shown in FIG. 6, when the panel other half 2d of the front inner frame panel 2 is peeled off from the concrete surface c of the meeting place box C by a crowbar, both end faces of the panel other half 2d are removed from the panel one half 2c. The frame is removed toward the hollow inside of the meeting place Masu C while sliding against the split surface 8'and the inner surface of the panel 1 half 2a of the right inner frame panel 2 adjacent to the other half 2d of this panel at right angles. Can be done. In the same manner, the panel half portion 2c of the front inner frame panel 2 is removed from the concrete surface c of the meeting place box C and disassembled. When the panel half part 2c is peeled off by the crowbar, the panel other half part 2d does not exist. Therefore, along the inner surface of the panel half part 2a of the left inner frame panel 2 adjacent to the panel half part 2c at right angles. It can be easily removed inward.

When the panel half portion 2c and the panel other half 2d of the front inner frame panel 2 are disassembled and removed in this way, the end faces of these panel one half 2c and the panel other half 2d are in contact with each other. Since there is no obstacle between the opposite inner surfaces of the panel half portions 2a and 2a in No. 2 and 2, these panel half portions 2a and 2a are sequentially peeled off from the concrete surface c of the meeting place basin C by a crowbar. , Both end faces can be removed and removed by sliding contact with the concrete surface c formed by the divided surface 8 and the outer surface (molded surface) of the front inner frame panel 2 removed earlier (see FIG. 7). ).

Similarly, the panel half portion 2c and the panel other half 2d of the rear inner frame panel 2, and the panel other halves 2b and 2b of the both side inner frame panels 2 are also concrete of the meeting place C formed by these panel outer surfaces. Deframe and disassemble from surface c. The procedure for removing and disassembling the panel one-half part 2a and 2c of the front and rear inner frame panels 2 and 2 and the both side inner frame panels 2 and 2 and the panel other half parts 2b and 2d is limited to the above procedure. There is no.

In the above embodiment, the inner formwork B in the formwork for the meeting place has both end surfaces of the front and rear inner frame panels 2 and 2 facing each other at the front end portions and the rear end portions of both side inner frame panels 2 and 2. It is assembled in a rectangular frame shape in a state of being in contact with the inner frame panel 2, but as shown in FIG. 9, the front inner frame panel 2 is formed on the inner surface of the front end portion of one of the inner frame panels 2 and 2 on both sides. One end surface of the front side inner frame panel 2 is brought into contact with the other end inner surface (rear surface) of the front side inner frame panel 2, and the front end surface of the other inner frame panel 2 of both side inner frame panels 2 and 2 is brought into contact with each other. The inner surface (front surface) of one end of the rear inner frame panel 2 is brought into contact with the rear end surface of one inner frame panel 2 of the frame panels 2 and 2, and the other end surface of the rear inner frame panel 2 is contacted with the both side inner frame panels 2. It may be formed by combining them in a rectangular frame shape in contact with the inner surface of the rear end portion of the other inner frame panel 2 in 2.

The both side inner frame panels 2 and 2 and the front and rear inner frame panels 2 and 2 have the same size and shape, and these inner frame panels 2 are divided into two in the vertical direction, and the both side inner frames are the same as in the above embodiment. The panels 2 and 2 are formed of a panel half portion 2a and a panel other half portion 2b, and the front and rear inner frame panels 2 and 2 are formed of a panel half portion 2c and a panel other half portion 2d. Since the other structures in the formwork for the meeting place are the same as those in the examples shown in FIGS. 1 and 2, the same parts are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 10, concrete is placed between the outer formwork A and the inner formwork B of the formwork for the meeting place constructed in this way, and after the concrete is hardened, the outer formwork A and the inner formwork B are placed. By dismantling and, a concrete formwork C is produced.

To disassemble the outer formwork A, as described in the above embodiment, after pulling out the nails 7 fixing the ends of the outer frame panels 1 and 1 adjacent to each other at right angles, using a crowbar, all sides are disassembled. If the outer frame panel 1 of the above is peeled off from the concrete surface c of the concrete meeting place C produced by the outer frame panel 1, the concrete surface can be easily removed and disassembled without being damaged or damaged.

In order to disassemble the inner formwork B, first, a vertical crosspiece 3 provided at the inner corner of the formwork and a horizontal crosspiece 4 attached to the inner surface of the inner frame panel 2 are fixed to the inner frame panel 2. After removing these vertical crosspieces 3 and horizontal crosspieces 4 as shown in FIG. 11 by pulling out the nails 5 and 6, first, the panel one-half part 2a and the panel other half part 2b of the inner frame panels 2 and 2 on both sides, In addition, in the panel half portion 2c of the front and rear inner frame panels 2 and 2 and the panel other half portion 2d, at the end portion of the inner frame panel 2 in which one end face is divided surfaces 8 and 8'and the other end face is adjacent at right angles. The panel half that is in contact with the inner surface, that is, in FIG. 11, the panel half portion 2a arranged on the front side of the right inner frame panel 2 on both side inner frame panels 2 and 2 and the rear of the left inner frame panel 2 Using a crowbar, the panel other half 2b arranged on the side, the panel one half 2c arranged on the left side in the front inner frame panel 2, and the panel other half 2d arranged on the right side in the rear inner frame panel 2 are used. The concrete surface c of the meeting place C formed by the outer surfaces of these panels is sequentially peeled off (see FIG. 12).

For example, when the panel half portion 2a arranged on the front side of the right inner frame panel 2 in the inner frame panels 2 and 2 on both sides is peeled off from the concrete surface c of the meeting place box C by a crowbar, both end surfaces of the panel half portion 2a are removed. It is possible to remove the frame toward the hollow inside of the meeting place Masu C while sliding the split surface 8 with the panel other half portion 2b and the inner surface of the front inner frame panel 2 adjacent to the panel one half portion 2a at right angles. .. Similarly, the panel other half 2b arranged on the rear side of the left inner frame panel 2, the panel one half 2c arranged on the left side of the front inner frame panel 2, and the right side of the rear inner frame panel 2 are arranged. The panel and the other half 2d can be sequentially peeled off from the concrete surface c of the meeting place C using a crowbar.

In this way, the panel half portion in which one end surface is in contact with the inner surface at the end portion of the inner frame panel 2 whose split surfaces 8 and 8'and the other end surface is adjacent at right angles is removed from the concrete surface c of the meeting place basin C. After dismantling the frame, the panel half of the inner frame panel 2 in which the inner corner of the meeting place C is formed by the outer surface of the corner, that is, the right side of the inner frame panels 2 and 2 on both sides as shown in FIG. The panel other half 2b arranged on the rear side of the inner frame panel 2 of the above, the panel one half 2a arranged on the front side of the left inner frame panel 2, and the panel other half 2d arranged on the right side of the front inner frame panel 2. And the panel half portion 2c arranged on the left side of the rear inner frame panel 2 are sequentially peeled off from the concrete surface c of the meeting place box C using a crowbar to remove and disassemble the frame.

At this time, as shown in FIG. 12, the panel half portion in which one end surface is the divided surfaces 8 and 8'and the other end surface is in contact with the inner surface at the end portion of the inner frame panel 2 adjacent at right angles is as described above. , The concrete surface c of the meeting place C has already been disassembled and removed, and the panel half of the inner frame panel 2 that forms the inner corner of the meeting place C by the outer surface of the corner can be removed. By peeling off these half parts of the panel, for example, the other half part 2d of the panel arranged on the right side of the front inner frame panel 2 from the concrete surface c of the meeting place box C with a crowbar, first. The frame can be removed and removed along the concrete surface c of the meeting place box C formed by the outer surface (molded surface) of the removed inner frame panel 2 on the right side (see FIG. 13).

Similarly, the panel other half 2b arranged on the rear side of the inner frame panel 2 on the right side, the panel one half 2a arranged on the front side of the inner frame panel 2 on the left side, and the left side of the inner frame panel 2 on the rear side are arranged. Remove the frame from the panel half 2c and disassemble it.

A Outer formwork B Inner formwork 1 Outer frame panel 2 Inner frame panel 3 Vertical crosspiece 4 Horizontal crosspiece 5, 6, 7 Nails 8, 8'Divided surface 9 Cutting beam

Claims (4)

An outer formwork assembled in a rectangular frame shape by wooden both side outer frame panels and front and rear outer frame panels, and an inner formwork assembled in a rectangular frame shape by wooden both side inner frame panels and front and rear inner frame panels. The inner frame panels adjacent to each other at right angles in the outer form are nailed so that they can be disassembled, while all the inner frame panels of the inner form are vertically divided into two parts, one half of the panel and the other half of the panel. Inner corners at the four corners of the inner formwork with the end face of the other inner frame panel in contact with the inner surface of the end of one inner frame panel in the inner frame panel formed on the portion and adjacent at right angles. It is nailed to the vertical formwork arranged in the above so that it can be disassembled, and the horizontal formwork is attached to several places on the inner surface of the inner frame panels on both sides and the front and rear inner frame panels at right angles. A formwork for a meeting place, characterized in that the crosspiece is detachably nailed to one half of the panel and the other half of the panel in all the above inner frame panels. The inner form is formed into a rectangular frame shape with both end surfaces of the other inner frame panel in contact with the inner surfaces of the opposite ends of one of the inner frame panels on both sides and the front and rear inner frame panels. The formwork for a meeting place according to claim 1, wherein the formwork is assembled. In the inner formwork, the end inner surface of the other inner frame panel adjacent to the end surface at one end of one of the inner frame panels on both sides and the front and rear inner frame panels at right angles to one end side of the inner frame panel. The end face of the other inner frame panel adjacent to the other end side of the inner frame panel at right angles to the inner surface of the other end of the one inner frame panel is brought into contact with the inner surface. The formwork for the meeting place according to claim 1. The meeting place Masu horizontal crosspiece formwork according to claim 1, wherein a cutting beam is interposed between the horizontal crosspieces facing each other in parallel.

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