Template level adjusting method and template level adjusting tool

Abstract

To prevent level adjustment in installing a template for architecture and civil engineering from being hindered by surrounding reinforcement.SOLUTION: There is provided a method for adjusting the level of a template A1 which includes a plate-like template body 1 horizontally embedded in a lower foundation B1, a plurality of long nuts 2 penetrating in the thickness direction of the template body 1, and a plurality of level adjusting bolts 31 screwed into the long nuts 2. The template A1 is placed on a floor slab B2 so as to abut the lower end of the level adjusting bolt 31 on the floor slab B2 where the lower foundation B1 is placed, an engaging part of a screwing tool 8 is inserted from the upper side of the long nut 2, the engaging part is engaged with a screwing engagement receiving part 312 of the level adjusting bolt 31 in the long nut 2, and the level of the template A1 is adjusted by turning the screwing tool 8 to rotate and advance / retract the level adjusting bolt 31.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a method for adjusting the level of a template for architectural or civil engineering work, and a level adjustment tool used for this method. [Background technology]

[0002] Conventionally, templates with positioning through-holes for inserting anchor bolts or main reinforcement bars into steel plates have been widely used to position bolts for attaching seismic isolation members in seismic isolated buildings, anchor bolts for steel columns in general buildings, and main reinforcement bars (reinforcement bars) in reinforced concrete buildings. Such templates are buried in the lower foundation of the building, but precise level adjustment is required before burying them.

[0003] For example, Figure 10 of Patent Document 1 introduces as prior art a method for adjusting the level of a steel plate template 900 for mounting bolts that attach a seismic isolation device to a foundation. This template has a rectangular ring-shaped steel plate template body, and anchor bolts are threaded into the lower ends of long nuts that penetrate the template body in the thickness direction. The level of the template body is adjusted by threading the anchor bolts up and down. Furthermore, this template 900 is configured to be embedded in the concrete of the foundation so that the top surface of the template body is flush with the top surface of the lower foundation of the seismic isolation device, and mounting bolts for attaching the seismic isolation device are threaded into the long nuts from the top side to attach the flange of the seismic isolation device.

[0004] In this template 900, the template body made of steel plate bends under its weight when supported horizontally, so a large number of temporary angle frames with bolts that move up and down at their top ends are erected on the concrete of the foundation, and the level of the template is adjusted using these bolts. As a result, with template 900, not only is it necessary to erect the temporary angle frames and adjust the level of template 900, but it also requires two on-site operations, one to install the temporary angle frames and one to attach the seismic isolation devices, which poses a problem of a heavy burden on workers.

[0005] Therefore, in Patent Document 1, the applicant proposes a concrete template in which the template body is made of precast concrete, thereby eliminating deflection due to the template body's own weight and eliminating the need to cast temporary angle stands to lift the deflection. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7378861 Summary of the Invention [Problem to be solved by the invention]

[0007] However, even in the concrete template of Patent Document 1, the level of the template body is adjusted by screwing or moving back and forth the anchor bolt threaded into the long nut extending downward from the underside of the template. However, there is a problem that the template body gets in the way, or when the anchor bolt is placed between the reinforcing bars provided for pouring the lower foundation, the reinforcing bars get in the way and make it difficult to rotate the anchor bolt. The present invention has been made in consideration of the above-mentioned problems, and aims to provide a method for adjusting the level of a template so that the template body and reinforcement for the lower foundation do not get in the way, and a level adjustment jig. [Means for solving the problem]

[0008] The invention made to solve the above problem is a method for adjusting the level of a template, which includes a plate-shaped template body that is horizontally embedded in a lower foundation, a plurality of long nuts that penetrate the template body in the thickness direction, and a plurality of anchor bolts that are screwed into the plurality of long nuts, wherein the plurality of anchor bolts include level adjustment bolts that adjust the level of the template body. The template level adjustment method of the present invention is characterized in that it comprises a template placing step in which, as the level adjustment bolt, a rod-shaped externally threaded bolt and a bolt having a screw-turning engagement receiving portion consisting of a non-circular protrusion or recess provided on the upper end surface of the externally threaded bolt and having a maximum outer diameter smaller than the root diameter of the external thread of the externally threaded bolt are used, and the template is placed on the floor slab so that the lower end of the level adjustment bolt abuts against the floor slab on which the lower foundation is poured, and a level adjustment step in which a screw-turning tool having an engagement portion that engages with the screw-turning engagement receiving portion within the long nut is inserted from above into the long nut to engage with the screw-turning engagement receiving portion, and the level adjustment bolt is moved up and down by being turned with the screw-turning tool, thereby adjusting the level of the template.

[0009] The templates targeted by the level adjustment method of the present invention secure the object to be attached, such as a seismic isolation device, by fixing the mounting bolt from above the long nut, so the anchor bolt or level adjustment bolt must be screwed into the long nut with space left above the female threaded hole of the long nut to screw in the mounting bolt. In the level adjustment method of the present invention, a screw-turning engagement receiver consisting of a non-circular protrusion or recess whose maximum outer diameter is smaller than the root diameter of the male thread is provided on the upper end surface of the level adjustment bolt, so that the level adjustment bolt can be accommodated up to its upper end in the female screw hole of the nut. Furthermore, the screw-turning engagement receiver of the screw-turning tool that turns the level adjustment bolt is also inserted into the nut from above and is configured to engage with the engagement receiver of the level adjustment bolt, so that the level adjustment bolt can be turned from above the template body, and the level of the template can be adjusted without being obstructed by reinforcing bars or the like that protrude from the template body or the lower foundation.

[0010] The level adjustment method of the present invention preferably includes a level adjustment bolt tightening step in which an anti-rotation ball is placed on the level adjustment bolt, a tightening bolt is screwed into the upper end opening of the long nut, and the tightening bolt presses the level adjustment bolt via the anti-rotation ball to tighten the level adjustment bolt. The leveling bolts must be fixed to the template body via long nuts to maintain the level of the template body even after leveling. By placing anti-rotation balls on the leveling bolts and screwing the crimping bolts that contact them from above to press the anti-rotation balls downward, the leveling bolts can be pressed from above without being screwed, allowing the leveling bolts to be crimped to the long nuts. This crimping process is also performed from above the template body, so it is not hindered by reinforcing bars protruding from the template body or the lower foundation.

[0011] The present invention includes a level adjustment tool used to adjust the level of a template, which includes a plate-shaped template body that is horizontally embedded in a lower foundation, a plurality of long nuts that penetrate the template body in the thickness direction, and a plurality of anchor bolts that are screwed into the plurality of long nuts. The level adjustment tool of the present invention comprises a plurality of level adjustment bolts that are included in the plurality of anchor bolts and adjust the level of the template body by screwing them with their lower ends abutting against the floor slab on which the lower foundation is placed, and a screwing tool for screwing the level adjustment bolts, wherein the level adjustment bolts have a rod-shaped male threaded bolt and a screwing engagement receiver consisting of a non-circular protrusion or recess provided on the upper end surface of the male threaded bolt and whose maximum outer diameter is smaller than the root diameter of the male thread of the male threaded bolt, and the screwing tool has an engagement part that engages with the screwing engagement receiver inside the long nut.

[0012] The level adjustment tool set of the present invention preferably comprises an anti-rotation ball placed on the level adjustment bolt, and a tightening bolt that is screwed into the upper end opening of the long nut and presses the level adjustment bolt through the anti-rotation ball to tighten the level adjustment bolt. [Effects of the Invention]

[0013] As described above, the level adjustment method and level adjustment tool of the present invention can prevent work from being hindered by reinforcement bars protruding from the template body or the lower foundation, thereby enabling efficient level adjustment of the template body. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is a plan view showing how the level of a template is adjusted using a level adjuster according to the first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line XX in FIG. [Figure 3] 1A is a partially transparent view of the periphery of a level adjustment bolt, showing how a level adjustment process is performed using the level adjustment tool of FIG. 1. FIG. 1B is another example of a level adjustment bolt. [Figure 4] 2 is a partial perspective view of the periphery of a level adjustment bolt, illustrating how a crimping process is performed using the level adjuster of FIG. 1. FIG. [Figure 5] 1A and 1B are a side view and a plan view showing a step of installing vertical reinforcement on the outer periphery of a lower foundation according to the first embodiment of the present invention. [Figure 6] 1A and 1B are a side view and a plan view showing a reinforcement completion step and a formwork installation step according to a first embodiment of the present invention. [Figure 7] 1A and 1B are a side view and a plan view showing a template installation step according to a first embodiment of the present invention. [Figure 8] FIG. 10 is a plan view of a template body according to another embodiment of the present invention. [Figure 9] 1 is a schematic diagram showing an example of using a template that is the subject of the level adjustment method of the present invention for seismic isolation rubber. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments and can be modified as appropriate without departing from the spirit and scope of the present invention.

[0016] (First embodiment) 1 and 2 show a template A1 to be leveled by a level adjuster 100 (see FIGS. 3 and 4, not shown in FIGS. 1 and 2) according to a first embodiment of the present invention.

[0017] (Template A) First, prior to describing the level adjusting tool 100 according to this embodiment, a template A1 whose level is adjusted by the level adjusting tool 100 will be described. As shown on the right side of Figure 9, template A1 is embedded in the lower foundation B1 of the seismic isolation device (hereinafter simply referred to as the "lower foundation") that supports isolator E1 of a laminated rubber seismic isolation device attached to a structure such as a building to be isolated, and is used to improve the vertical and positional accuracy of mounting bolts 10 that secure isolator E1 to lower foundation B1. Lower foundation B1 is placed on floor slab B2.

[0018] As shown in FIG. 2, the template A1 includes a plate-shaped template body 1 that is horizontally embedded in a lower foundation B1, twelve long nuts 2 that penetrate the template body 1 in the thickness direction, and twelve anchor bolts 3 that are screwed into the twelve long nuts 2. Four of the twelve anchor bolts 3 are level adjustment bolts 31 (in the example of FIG. 1, they are disposed at the positions of the mounting bolts 10 on the front, back, left, and right (top, bottom, left, and right in FIG. 1), and three of them are shown in FIG. 2), and the remaining eight are anchor bolts 32 that are not level adjustment bolts 31. The anchor bolts 32 are not included in the configuration of the level adjustment tool 100. However, the number of long nuts 2 is not limited to twelve, as long as there are three or more, and the number of level adjustment bolts 31 is also not limited to four, as long as there are three or more.

[0019] The template body 1 of FIG. 1 is formed by precasting concrete and has a disk shape that generally covers a circular area in plan view. However, the template body 1 targeted by the level adjusting tool 100 of this embodiment is not limited to being made of concrete, but may be made of mortar, or may be made of a steel plate or other metals.

[0020] The template body 1 has bottom reinforcement bars 11 embedded near the bottom surface. The bottom reinforcement bars 11 cross vertically and horizontally while avoiding the long nuts 2. However, fiber-reinforced concrete may also be used for the template body 1. Reinforcing fibers that can be used include metal fibers such as steel fibers and carbon fibers, as well as aramid fibers, polyolefin fibers such as polypropylene, and resin fibers such as vinylon fibers.

[0021] The template body 1 has a circular opening 12 provided in the center in a plan view for pouring concrete for the lower foundation below the template body 1, and a large number of air holes 13, etc. arranged in two rows at equal angular intervals around the opening 12. The air holes 13, etc. are used to release air from below the template body 1 when concrete is poured below it.

[0022] As shown in FIG. 2, the anchor bolt 32 includes a male threaded bolt 321 and a circular fixing plate 33. The lower end surface 321a of the male threaded bolt 321 is provided on a plane perpendicular to its axis, and the fixing plate 33 is fixed near the lower end of the male threaded bolt 321 by welding or other means. The anchor bolt 32 extends downward from the long nut 2 so that the upper end of the male threaded bolt 321 is threaded partway into the female threaded hole 2a of the long nut 2 from below. The anchor bolt 32 does not abut against the floor slab B2 when the template A is placed on the floor slab B2. The fixing plate 33 prevents the anchor bolt 32 from slipping out of the lower foundation B1. The mounting bolt 10 is threaded into the female threaded hole 2a of the long nut 2 from above until just before the isolator E1 is attached.

[0023] (Leveling tool 100) As shown in FIG. 4, the level adjustment tool 100 according to this embodiment mainly comprises a level adjustment bolt 31 and a screw-turning tool 8, and also comprises a crimping tool 5 used to crimp the level adjustment bolt 31.

[0024] As shown in FIG. 3 , the level adjustment bolt 31 includes a headless, rod-shaped male threaded bolt 311, a screw-turning engagement receiving portion 312 mounted and fixed on an upper end surface 311a of the male threaded bolt 311, and a grounding claw 34 fixed on a lower end surface 311b of the male threaded bolt 311. The grounding claw 34 tapers downward and has a point-like tip 34a. In the illustrated example, the screw-turning engagement receiving portion 312 is a protrusion formed by welding a hexagonal nut to the upper end surface 311a of the male threaded bolt 311. The screw-turning engagement receiving portion 312 may be a recess such as a hexagonal hole provided in the upper end surface 311a instead of a protrusion. The planar shape of the protrusion or recess may be a polygonal shape other than a hexagon, or may be a non-circular shape such as a star, cross, or ellipse. The shape is not particularly limited as long as the engaging portion of the screw-turning tool 8 (described later) can be engaged with the screw-turning engagement receiving portion and turned with sufficient torque.

[0025] The maximum outer diameter of the screw-turning engagement receiving portion 312 is smaller than the root diameter of the male threaded bolt 311, and can be accommodated in the female threaded hole 2a of the long nut 2. A circular fixing plate 33 with a hole is fixed to the level adjustment bolt 31 near its lower end by welding or the like. The fixing plate 33 prevents the level adjustment bolt 31 from coming off the lower foundation B1.

[0026] The grounding claw 34 in the example of Figure 3(a) has an inverted cone shape, but the shape is not particularly limited, and it can be spherical as shown in Figure 3(b), an inverted polygonal pyramid shape, or a shape with a flat tip. Any shape can be adopted to match the floor slab B2, but it is preferable that the lower end is pointed. The screw-turning engagement receiving portion 312 and the grounding claw 34 are fillet-welded all around to the male threaded bolt 311, but they may also be fixed with screws or machined out integrally with the male threaded bolt 311. However, the grounding claw 34 does not have to be provided.

[0027] The crimping tool 5 includes a crimping bolt 6 and a co-rotation prevention ball 7. The crimping bolt 6 comprises a bolt body 61 that is shorter than the level adjustment bolt 31, and a screw-turning engagement receiver 62 welded to the upper end surface 61a of the bolt body 61. The screw-turning engagement receiver 62 preferably has the same shape as the screw-turning engagement receiver 312 of the level adjustment bolt 31. This allows the screw-turning tool 8 that screws the level adjustment bolt 31 to also be used to screw the crimping bolt 6. The lower end surface 61b of the bolt body 61 is provided in a plane perpendicular to the axis.

[0028] The anti-rotation ball 7 has a diameter larger than the female thread hole 312a of the hexagonal nut that constitutes the screw-turning engagement receiver 312. A portion of the lower side of the anti-rotation ball 7 is received in the upper end opening of the female thread hole 312a, and the anti-rotation ball 7 is rotatably supported relative to the screw-turning engagement receiver 312. Rotating the crimping bolt 6 presses the anti-rotation ball 7 downward, which in turn presses the level adjustment bolt 31 downward. By pressing the level adjustment bolt 31 via the anti-rotation ball 7 in this manner, the level adjustment bolt 31 can be pressed while preventing the level adjustment bolt 31 from rotating together with the crimping bolt 6, thereby preventing the level adjustment bolt 31 from screwing and damaging the level of the template body 1. In this embodiment, the anti-rotation ball 7 is not connected to the crimping bolt 6. However, it may be connected to the crimping bolt 6 by, for example, being received in a spherical socket provided at the lower end of the crimping bolt 6. The material of the anti-corotation ball 7 is not particularly limited as long as it has the rigidity required for tightening the level adjustment bolt 31, and known materials such as iron, stainless steel, and ceramics can be suitably used.

[0029] As shown in FIG. 3 , the screw-turning tool 8 has an engaging portion 81 consisting of a recess that engages male-female with the screw-turning engagement receiving portion 312 of the level adjustment bolt 31 and the screw-turning engagement receiving portion 62 of the crimping bolt 6. The screw-turning tool 8 is a hexagonal socket wrench having an engaging portion 81 that engages with the hexagonal nuts that form the screw-turning engagement receiving portions 312, 62. The engaging portion 81 is cylindrical and has a hexagonal column-shaped recess 81a at its tip. The maximum outer diameter of the engaging portion 81 is smaller than the thread diameter of the female screw hole 2a of the long nut 2, so that it can be accommodated in the female screw hole 2a. This allows the engaging portion 81 of the screw-turning tool 8 to engage with the screw-turning engagement receiving portion 312 of the level adjustment bolt 31 and the screw-turning engagement receiving portion 62 of the crimping bolt 6 within the female screw hole 2a of the long nut 2, allowing them to rotate within the female screw hole 2a. However, if the engagement receiving portion 312 for turning the level adjustment bolt 31 is a recess such as a hexagonal hole, the engagement portion 81 of the screw-turning tool 8 that engages with it is configured as a protrusion such as a hexagonal wrench. The cross-sectional shapes of the recess and protrusion of the engagement portion 81 are not limited to hexagonal, and can be changed appropriately to match the cross-sectional shape of the engagement receiving portion 312 for turning the level adjustment bolt 31.

[0030] Reference numeral 96 in Figs. 1 and 2 denotes a peripheral formwork for pouring the lower foundation B1.

[0031] <Adjusting the template level and planar position> Next, a method for adjusting the level and the plan view position of the template A used for attaching seismic isolation rubber using the level adjusting tool 100 according to one embodiment of the present invention will be described in detail.

[0032] (Periphery vertical reinforcement installation process S1) The peripheral vertical reinforcement installation process S1 (hereinafter sometimes referred to simply as "process" S1) is a process of installing peripheral vertical reinforcement B31 that forms the outer periphery of the reinforcement B3 that is embedded in the lower foundation B1 in which the template A is embedded.

[0033] The outer periphery vertical reinforcement B31 is formed by pouring the floor slab B2 so that it extends vertically into the floor slab B2 on which the lower foundation B1 is placed, and with its upper end protruding upward from the upper surface B21 of the floor slab B2, as shown in Figure 5(a).The outer periphery vertical reinforcement B31 is provided in large numbers along the periphery of the lower foundation B1 in plan view, as shown in Figure 5(b).

[0034] (Reinforcement completion process S2) The reinforcement completion process S2 is a process for completing the reinforcement B3 to be installed inside the lower part of the foundation, as shown in Fig. 6. After the periphery vertical reinforcement installation process S1 is completed, horizontal reinforcement B32, ... is connected in a grid pattern to the horizontally bent upper end of the periphery vertical reinforcement B31 using wire as shown in Fig. 6, and periphery frame reinforcement B33, ... is connected from the outside or inside (outside in the example of Fig. 6) of the periphery vertical reinforcement B31.

[0035] (Peripheral formwork installation process S3) The outer periphery formwork installation process S3 is a process of installing an outer periphery formwork 96 for pouring concrete into the lower foundation. After or in parallel with the completion of the reinforcement arrangement completion process S2, the outer periphery formwork 96 for pouring concrete is installed so as to surround the reinforcement B3.

[0036] (Template installation process S4) The template installation process S4 is a process of placing the template A1 on the floor slab B2. After the reinforcement completion process S3 and the peripheral formwork installation process S4 are completed, as shown in Figure 7, some of the mounting bolts 10 are removed from the template A1, eyebolts 97 are screwed onto the long nuts 2 from above, and a rope or the like is attached to this, and the template is hung by a crane or the like and placed on the floor slab B2. At this time, the center mark (not shown) marked on the template main body 1 is aligned with the center mark (not shown) marked on the floor slab B2 by marking or laser. The template main body 1 is positioned so that the four level adjustment bolts 31 and anchor bolts 32 are positioned so that they do not come into contact with the reinforcement B3.

[0037] (Level adjustment process S5) The level adjustment step S5 is a step of leveling the template body 1, i.e., aligning the axial direction of the nut vertically. After completing the template installation step S4, as shown in FIG. 3, the engaging portion 81 of a screw-turning tool (a hexagon socket wrench in the illustrated example) 8 is inserted into the female screw hole 2a from above the nut 2 to which the level adjustment bolt 31 is attached, and the recess 81a of the engaging portion 81 is fitted onto the screw-turning engagement receiving portion (a hexagon nut in the illustrated example) 312 of the level adjustment bolt 31. If it is desired to raise the template body 1 in this position, the screw-turning tool 8 is rotated to advance the level adjustment bolt 31 downward from the nut 2. If it is desired to lower the template body 1 in this position, the screw-turning tool 8 is rotated to retract the level adjustment bolt 31 upward from the nut 2.

[0038] (Level confirmation process S6) Once the level adjustment step S5 is completed, the level of the template body 1 (verticality of the long nut 2) is checked. If the level is not horizontal, steps S5 to S6 are carried out again.

[0039] (Crimping process S7) The crimping step S7 is a step of crimping and fixing the level adjustment bolt 31 to the long nut 2 to fix the template A1 in the correct posture and position. After the level confirmation step S6 is completed, an anti-rotation ball 7 is inserted into the female threaded hole 2a of the long nut 2 to which the level adjustment bolt 31 is connected from above, and the level adjustment bolt 31 is placed so that it is partially housed in the upper opening of the female threaded hole 312a of the screw-turning engagement receiving portion 312 of the level adjustment bolt 31. In this state, the crimping bolt 6 is further screwed in from above, and the crimping bolt 6 is screwed in with the screw-turning tool 8 to press the level adjustment bolt 31 downward via the anti-rotation ball 7 and crimp it.

[0040] (Seismic isolation device installation process S8) After completing the installation of template A and adjusting its level through steps S1 to S7, concrete is poured into the outer peripheral formwork 96 through the opening 12 in the template body 1 to embed the template A1 in the lower foundation B1. Once the lower foundation B1 has solidified, the mounting bolts 10 are temporarily removed, and the bolt holes in the lower flange of the isolator E1 are aligned with the female threaded holes 2a in the long nuts 2, and the mounting bolts 10 are screwed into the long nuts 2. In this way, the isolator E1 is connected to the template A1.

[0041] (effect) As described above, the level adjusting tool and level adjusting method according to the first embodiment have the following advantages due to the above-described configuration. (1) The level adjustment bolt 31 can be screwed from above the template A1, so that the level of the template A can be adjusted without being hindered by the surrounding reinforcement B. (2) A point-shaped tip 34a is provided at the lower end of the grounding claw 34 provided at the lower end of the level adjustment bolt 31, so that the level and position of the template A1 can be adjusted with high precision even if there are unevenness on the upper surface of the floor slab B2. (3) The tightening bolts 6 that tighten the level adjustment bolts 31 can also be rotated from above the template A1, so that the level adjustment bolts 31 can be tightened without being obstructed by the surrounding reinforcement B. (4) The anti-rotation ball 7 is interposed between the tightening bolt 6 and the level adjustment bolt 31, so that the level of the template body can be prevented from being lost due to the rotation of the level adjustment bolt 31 during tightening.

[0042] (Other embodiments) As described above, the present invention is not limited to the above-described embodiments. For example, the template body targeted by the level adjustment method of the present invention is not particularly limited in planar shape as long as it is plate-shaped, and any known shape such as a rectangular plate shape as shown in Figure 8(a), a rectangular ring shape with a large opening 14 in the center as shown in Figure 8(b), or a circular ring shape with an opening 15 as shown in Figure 8(c) or the like can be used as appropriate.

[0043] Furthermore, the level adjustment tool of the present invention does not need to be equipped with a tightening nut or an anti-rotation ball. The level adjustment bolt may be tightened by a method that does not use a tightening bolt. The level adjustment tool and level adjustment method of the present invention can be used not only when installing a seismic isolation device, but also in any case where a bolt is screwed into a concrete surface. [Explanation of symbols]

[0044] A(A1,A2,A3,A4) template 1,201,301,401 Template body 2 long nuts 3(31,32) Anchor bolt 31 Level adjustment bolt 312 Threaded engagement receiving portion 6 Crimping bolt 8 Screw turning tool 7 Anti-rotation ball 81 Engagement part B1 Lower foundation B21 Slab surface

Claims

1. 1. A method for adjusting the level of a template, comprising: a plate-shaped template body that is horizontally embedded in a lower foundation; a plurality of long nuts that penetrate the template body in a thickness direction; and a plurality of anchor bolts that are screwed into the plurality of long nuts, wherein the plurality of anchor bolts include level adjustment bolts that adjust the level of the template body, a template placing step in which a rod-shaped male threaded bolt and a bolt having a screw-turning engagement receiving portion formed of a non-circular protrusion or recess provided on the upper end surface of the male threaded bolt and having a maximum outer diameter smaller than the root diameter of the male thread of the male threaded bolt are used as the level adjustment bolt, and the template is placed on the floor slab so that the lower end of the level adjustment bolt abuts against the floor slab on which the lower foundation is placed; a level adjustment step of inserting a screw-turning tool having an engaging portion that engages with the screw-turning engagement receiving portion inside the long nut from above into the long nut to engage with the screw-turning engagement receiving portion, and screwing the level adjustment bolt forward and backward by the screw-turning tool to adjust the level of the template; A template level adjustment method comprising:

2. 2. The template level adjustment method according to claim 1, further comprising a level adjustment bolt tightening step of placing an anti-rotation ball on the level adjustment bolt, screwing a tightening bolt into the upper end opening of the long nut, and using the tightening bolt to press the level adjustment bolt through the anti-rotation ball to tighten the level adjustment bolt.

3. A level adjustment tool used to adjust the level of a template, the level adjustment tool comprising: a plate-shaped template body that is horizontally embedded in a lower foundation; a plurality of long nuts that penetrate the template body in a thickness direction; and a plurality of anchor bolts that are screwed into the plurality of long nuts, a plurality of level adjustment bolts included in the plurality of anchor bolts, the level of the template body being adjusted by being screwed while the lower ends are in contact with the floor slab on which the lower foundation is placed; a screwing tool for screwing the level adjustment bolt; Equipped with The level adjustment bolt has a rod-shaped male threaded bolt and a screw-turning engagement receiving portion formed on an upper end surface of the male threaded bolt and consisting of a non-circular protrusion or recess whose maximum outer diameter is smaller than the root diameter of the male thread of the male threaded bolt, The screw-turning tool is a template level adjustment tool having an engagement portion that engages with the screw-turning engagement receiving portion inside the long nut.

4. 5. A template level adjustment tool as described in claim 4, comprising an anti-rotation ball placed on the level adjustment bolt, and a tightening bolt that is screwed into the upper end opening of the long nut and presses the level adjustment bolt via the anti-rotation ball to tighten the level adjustment bolt.

Images