JP3236725U - Cage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holder capable of improving the positioning accuracy of an anchor bolt. SOLUTION: The holder 1 holds an anchor bolt 6 whose lower end is embedded in a foundation of a building and whose upper end is provided so as to project 400 mm or more from the top surface of the foundation. A main body portion 4 having a base end portion 41 attached to a formwork 2 for forming a foundation and a tip portion 42 extending from the base end portion toward a foundation forming portion 7 in the formwork 2, and a main body portion 4 The holding portion 5 is provided at the tip portion of the main body and is configured to have a tubular shape through which the anchor bolt 6 can be inserted in the vertical direction. The holding portion 5 is set at a height of 100 mm or more from the upper surface of the main body portion 4. To. [Selection diagram] Fig. 1

Description

The present invention relates to a holder for positioning an anchor bolt whose lower end is embedded in a foundation before placing concrete.

The holders include a substantially I-shaped flat plate member in a plan view fixed across a pair of formwork provided facing each other for placing concrete, and a flat plate member erected in the center of the flat plate member. , A round cylinder to which an anchor bolt can be inserted and fixed is proposed (see, for example, Patent Document 1).

By the way, in recent years, wooden panels have been fixed on the foundation with anchor bolts. A through hole for inserting an anchor bolt is formed in the wooden panel in the axial direction, and the wooden panel is placed on the foundation so that the anchor bolt can be inserted through the through hole of the wooden panel. The wooden panel can be fixed on the foundation by screwing a nut into the tip of the anchor bolt inserted into the through hole of. In this case, the anchor bolts are projected from the top surface of the foundation by 400 mm or more so that the wooden panel can be well supported by the anchor bolts.

Since the holder of Patent Document 1 is not manufactured on the assumption that the anchor bolt is held in a state of protruding 400 mm or more from the top surface of the foundation as described above, the anchor bolt can be held stably. However, it caused the inconvenience that the positioning accuracy of the anchor bolt deteriorated.

Japanese Unexamined Patent Publication No. 11-200379

Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to provide a holder capable of improving the positioning accuracy of anchor bolts.

The holder according to the present invention is a holder that holds an anchor bolt at a position with respect to the foundation so that the lower end portion is embedded in the foundation of the building and the upper end portion protrudes from the top surface of the foundation by 400 mm or more. A main body portion having a base end portion attached to a mold for forming the foundation and a tip portion extending from the base end portion toward the foundation forming portion in the formwork, and the main body portion. The holding portion is provided at the tip portion of the above and is configured to have a tubular shape through which the anchor bolt can be inserted in the vertical direction, and the holding portion is set at a height of 100 mm or more from the upper surface of the main body portion. It is characterized by that.

According to the present invention, the base end portion of the main body portion is attached to the form for forming the foundation, and the anchor bolt is inserted in the vertical direction through the tubular holding portion provided at the tip end portion of the attached main body portion. .. At this time, since the holding portion is set at a height of 100 mm or more from the upper surface of the main body portion, it is possible to stably hold the anchor bolt whose upper end portion protrudes by 400 mm or more from the top surface of the foundation. Therefore, the anchor bolt can be accurately held in the vertical direction.

Further, in the holder according to the present invention, the formwork may be made of wood and may be provided with wood screws for fixing the base end portion of the main body portion to the formwork.

According to the above configuration, since the formwork is made of wood, the base end portion of the main body portion can be fixed by wood screws at any position of the formwork.

Further, in the holder according to the present invention, the formwork is provided with a width centering jig for positioning the anchor bolt at a predetermined position in the width direction of the foundation, and the main body portion is provided with the width core. A width core positioning unit for positioning with respect to the feeding jig may be provided.

According to the above configuration, by positioning the width core positioning portion with respect to the width centering jig provided on the formwork, the anchor bolt can be reliably positioned at a predetermined position in the width direction of the foundation.

Further, in the holder according to the present invention, the width centering jig is provided so as to be displaced in the width direction with respect to a predetermined position in the width direction, and the width core positioning portion is centered on the cylinder axis of the holding portion. It may be provided so as to be separated by the amount of the deviation.

According to the above configuration, the width centering jig is provided so as to be offset in the width direction with respect to a predetermined position in the width direction, so that the width centering jig does not interfere with the anchor bolt. Further, by aligning the width center positioning jig that is displaced in the width direction with respect to the predetermined position in the width direction with the width core positioning portion that is separated from the center of the cylinder axis of the holding portion by the amount of the deviation, the anchor bolt is attached. It can be reliably positioned at a predetermined position in the width direction of the foundation.

Further, in the holder according to the present invention, the formwork is provided with a length centering mark portion for positioning the anchor bolt at a predetermined position in the length direction of the foundation, and the main body portion is the same. A length core positioning portion for positioning with respect to the length centering mark portion may be provided.

According to the above configuration, by positioning the length core positioning portion provided in the main body portion on the length centering mark portion provided on the formwork, the anchor bolt is reliably positioned at a predetermined position in the length direction of the foundation. can do.

As described above, by setting the holding portion at a height of 100 mm or more from the upper surface of the main body portion, it is possible to provide a holder capable of improving the positioning accuracy of the anchor bolt.

It is a perspective view which attached the holder of this invention to a formwork. It is a vertical sectional side view of the holder. The main body of the holder is shown, (a) is a plan view, (b) is a front view, and (c) is a side view. It is a top view which temporarily fixed the holder to a formwork. It is a top view which shows the state which the holder was positioned in the width direction and fixed to the formwork. It is a lower side view in a partial cross section in which the formwork is attached to the formwork when the distance between the formwork of FIG. 1 is different. It is a side view which attached the 2nd holder of another form between both formwork. The first member of the second holder of FIG. 7 is shown, (a) is a plan view, (b) is a front view, and (c) is a side view. The second member of the second holder of FIG. 7 is shown, (a) is a plan view, and (b) is a front view. A state in which the first member of the second holder is fixed to the second formwork is shown, (a) is a plan view, and (b) is a side view. A state in which the second member of the second holder is fixed to the first formwork is shown, (a) is a plan view, and (b) is a side view. FIG. 7 is a vertical sectional side view in which the second holder is attached to the first formwork when the distance between the formwork of FIG. 7 is different.

Hereinafter, the holder according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the holder 1 is one of a pair of wooden formwork 2 and 3 provided facing each other at a space in the left-right direction for placing concrete. It includes a main body portion 4 provided in the frame 2 and a holding portion 5 provided at the tip end portion of the main body portion 4 and configured to have a cylindrical shape through which anchor bolts 6 can be inserted in the vertical direction.

The anchor bolt 6 is made of metal, its lower end is embedded in the foundation of a building (not shown), and the upper end is provided so as to project 400 mm or more from the top surface of the foundation. A screw portion 6A into which a nut (not shown) is screwed is formed at the upper end portion of the upper end portion of the anchor bolt 6. The anchor bolt 6 is used to fix a wooden panel (not shown) on the foundation. Further, although the anchor bolt 6 is shown to extend straight in the vertical direction, it may be provided with a bent portion whose lower end portion is bent. Further, the holding portion 5 is set at a height of 100 mm or more from the upper surface 4A of the main body portion 4. In FIG. 2, the left-right direction is the left-right direction, the direction penetrating the paper surface is the front-back direction, and the up-down direction is the up-down direction.

The main body 4 is made of metal, and both ends thereof in the lateral direction (front-back direction) are bent 90 degrees to form a substantially U-shape in the horizontal direction (width direction of the foundation). Further, the main body portion 4 has a base end portion 41 attached to one (left side) formwork 2 and a tip end portion 42 extending from the base end portion 41 toward the foundation forming portion 7 in the formwork 2. I have.

On the horizontal plate portion 43 of the base end portion 41 placed on the upper surface 2A of the formwork 2, a plurality of horizontal plate portions 43 (four in FIG. 1) for fixing to the formwork 2 with wood screws 8 The holes 43A (more than the number of wood screws 8 and 10 in FIG. 3A) are formed. A plurality (five in FIG. 1) of these holes 43A are formed at both ends of the base end portion 41 in the lateral direction (front-back direction) at intervals in the longitudinal direction (left-right direction) of the base end portion 41. A total of 10 pieces are formed. The base end portion 41 is fixed to the formwork 2 by the wood screws 8 by utilizing any four holes 43A out of these ten. Specifically, the width (left-right direction) dimension of the foundation so that the position of the anchor bolt 6 in the width direction (left-right direction) of the foundation is positioned at a predetermined position (for example, the center position in the width direction (left-right direction) of the foundation). By selecting the four holes 43A of the base end portion 41 whose positions are adjusted with respect to one of the molds 2 according to (150 mm to 220 mm), the base end portion 41 is satisfactorily attached to the mold 2 by the wood screws 8. It can be fixed. 1 and 2 show a case where the width (left-right direction) dimension of the foundation is 150 mm, and FIG. 6 shows a case where the width (left-right direction) dimension of the foundation is 200 mm.

Further, the upper surface 2A of the mold 2 is provided with a length centering mark portion 9 (see FIG. 1) for positioning the anchor bolt 6 at a predetermined position in the length direction (front-back direction) of the foundation, and the main body portion. Positioning of the base end portion 41 of 4 between the holes 43A and 43A at both ends in the lateral direction (front-rear direction), that is, at the center position of the proximal end portion 41 in the lateral direction (front-rear direction) with respect to the length centering mark portion 9. It is provided with a length core positioning portion 10 (see FIG. 3A) for the purpose. Therefore, as shown in FIG. 4, the anchor bolt 6 is positioned by positioning the length core positioning portion 10 provided at the base end portion 41 of the main body portion 4 on the length centering mark portion 9 provided on the mold 2. Can be reliably positioned at a predetermined position in the length direction of the foundation.

The length centering mark portion 9 shown in FIG. 1 is a linear black line drawn along the width direction of the foundation on the upper surface 2A of the formwork 2 in order to position the anchor bolt 6 at a predetermined position in the length direction of the foundation. Is. Further, as shown in FIGS. 3A and 4, a plurality of length core positioning portions 10 are formed at the base end portion 41 of the main body portion 4 and are long in the longitudinal direction (left-right direction) of the main body portion 4 (FIG. 4) long holes 10A, and a straight line 10B drawn along the longitudinal direction (horizontal direction) of the main body 4 at the center in the lateral direction (front-back direction) on the upper surface 4A of the main body 4. It is configured. The wire 10B is drawn in the lateral direction of the main body 4 between the elongated holes 10A and 10A adjacent to each other in the longitudinal direction (left-right direction) of the main body 4 and between the holding portion 5 and the elongated hole 10A located at the most tip portion 42 (the short side of the main body 4). (Front-back direction) It is written in the center. Therefore, as shown in FIG. 4, the anchor bolt 6 is based on the anchor bolt 6 by aligning the position of the main body portion 4 so that the length centering mark portion (black line) 9 and the line 10B that can be seen through the elongated hole 10A are aligned. Can be reliably positioned at a predetermined position in the length direction (front-back direction) of the. Both ends of each elongated hole 10A in the longitudinal direction are formed in an arc shape. Further, the elongated hole 10A located closest to the base end portion 41 has a U-shape due to the limitation of the length of the main body portion 4, and has a shorter dimension than the other elongated holes 10A.

As shown in FIGS. 3A, 3B, and 3C, the tip end portion 42 is located at a predetermined distance from the tip end portion toward the base end portion 41 side, and is in the lateral direction of the tip end portion 42. A metal holding portion 5 penetrates the center position (in the front-rear direction) and is fixed by welding or the like. Specifically, the central axis of the holding portion 5 is located at the center position of the tip portion 42 in the lateral direction (front-back direction) and at a position 50 mm closer to the base end portion 41 from the tip of the tip portion 42. It is arranged so that it is located. Anchor bolt 11 (see FIGS. 1 and 2) screwed into a screw hole formed in the holding portion 5 is provided on the upper portion of the holding portion 5, and the tip of the wing bolt 11 screwed into the holding portion 5 is provided. The anchor bolt 6 can be held by the holding portion 5 by pressing it against the outer peripheral surface of the anchor bolt 6.

As shown in FIGS. 1, 4, and 5, the formwork 2 or 3 is provided with a width centering jig 12 for positioning the anchor bolt 6 at a predetermined position in the width direction of the foundation, and the main body 4 is provided. Is provided with a width core positioning unit 13 for positioning with respect to the width centering jig 12. By positioning the width core positioning portion 13 with respect to the width centering jig 12 provided on the formwork 2 or 3, the anchor bolt 6 can be reliably positioned at a predetermined position in the width direction of the foundation (FIG. 5). The predetermined position may be the center position in the width direction of the foundation, or may be a position slightly deviated from the center position in the width direction of the foundation to one side or the other side in the width direction of the foundation.

The width centering jig 12 is composed of water threads stretched on the formwork 2 or 3, the water threads are provided so as to be offset in the width direction with respect to a predetermined position in the width direction, and the width core positioning portion 13 is provided. , From the linear markings on the outer surface 44G and the upper surface 44U (see FIGS. 2, 3 (a), (b), and 4) of the pair of vertical plate portions 44, 44 constituting the tip portion 42, respectively. Therefore, the mark marking 13 is provided so as to be separated from the center of the cylinder shaft of the holding portion 5 by the amount of the deviation.

As described above, the width centering jig (water thread) 12 is provided so as to be offset in the width direction with respect to a predetermined position in the width direction, so that the width centering jig (water thread) 12 becomes an anchor bolt 6. Does not interfere. Further, on the width centering jig 12 that is displaced in the width direction with respect to a predetermined position in the width direction, a width core positioning portion (mark mark) 13 that is separated from the center of the cylinder shaft of the holding portion 5 by the amount of the deviation is provided. By positioning, the anchor bolt 6 can be reliably positioned at a predetermined position in the width direction of the foundation (see FIG. 5).

In the present invention, the base end portion 41 of the main body portion 4 is attached to the formwork 2 for forming the foundation by wood screws 8, and the cylindrical holding portion 5 provided at the tip end portion 42 of the attached main body portion 4 is attached. The anchor bolt 6 is inserted in the vertical direction. At this time, since the holding portion 5 is set at a height of 100 mm or more from the upper surface 4A of the main body portion 4, the anchor bolt 6 whose upper end portion protrudes 400 mm or more from the top surface of the foundation can be stably held. .. Therefore, the anchor bolt 6 can be accurately held in the vertical direction.

A procedure for fixing the anchor bolt 6 to the formwork 2 with the holder 1 configured as described above before the foundation is placed will be described.

First, the anchor bolt 6 is inserted into the holding portion 5 of the holder 1 and held by the wing bolt 11. Next, the main body 4 of the holder 1 holding the anchor bolt 6 is placed on one of the formwork 2, and as shown in FIG. 1, the X direction of the main body 4 (the width direction (horizontal direction) of the foundation). And positioning in the Y direction (the length direction of the foundation (front-back direction)). In the X direction, as described above, the main body 4 is positioned so that the mark 13 coincides with the water thread 12, and in the Y direction, as described above, the length centered mark portion (black line) visible through the elongated hole 10A is visible. ) Adjust the position of the main body 4 so that 9 and the line 10B are in a straight line. When the positioning in the X direction and the Y direction is completed, the wood screw (which may be the same as or different from the wood screw 8) 8 is screwed into one form 2 through the elongated hole 10A shown in FIG. Temporarily fix the main body 4 to one of the molds 2. When the temporary fixing is completed, as shown in FIG. 5, a wood screw 8 is inserted into each of the four holes 43A to fix the main body 4 to one of the formwork 2. After fixing the main body 4, the wood screw 8 temporarily fixed to the long hole 10A may be removed, or the holder 1 may be temporarily fixed to the long hole 10A when the holder 1 is removed after the foundation is formed. The wood screw 8 may be removed together. Here, the main body 4 is temporarily fixed, but after positioning in the X and Y directions without temporary fixing, a plurality of (4 in this embodiment) wood screws 8 of the main body 4 are immediately attached. It may be fixed to one of the molds 2 with. In this case, by performing the work by two or more people, the main body 4 can be accurately fixed to one of the formwork 2 with a plurality of (four in this embodiment) wood screws 8. The timing of inserting the anchor bolt 6 into the holding portion 5 of the holder 1 and holding it by the wing bolt 11 may be after the holder 1 is fixed to the mold 2.

In the above embodiment, the first holder 1 fixed to one of the formwork 2 is shown, but as shown in FIG. 7, the second holder 20 is fixed over the pair of formwork 2 and 3. May be good. The second holder 20 is configured to absorb the height difference between the pair of formwork 2 and 3 and hold the anchor bolt 6 in an accurate position.

The second holder 20 is made of a rectangular metal whose upper end is fixed to the second formwork 3 on the right side, which is lower than the first formwork 2 on the left side, by a wood screw 8 in the length direction (front-back direction) of the foundation. One end is fixed to the first member 21 and the first formwork 2 whose upper end is higher than the second formwork 3 on the right side by a wood screw 8, and extends to the second formwork 3 and is connected to the first member 21. A second member 22 made of metal is provided. One end of the second member 22 is fixed to the first formwork 2, and the plate-shaped first flat plate portion 23 extending linearly to the second formwork 3 and the second formwork 3 side of the first flat plate portion 23. It includes a vertical plate portion 24 bent 90 degrees upward from the end, and a plate-shaped second flat plate portion 25 bent 90 degrees horizontally from the upper end of the vertical plate portion 24.

As shown in FIG. 9A, the first member 21 is for fixing the first member 21 to the second formwork 3 at both ends in the longitudinal direction and slightly closer to the right side than the center in the lateral direction. Holes 21A and 21A for inserting the wood screw 8 are formed, and a metal screw shaft 21B having a screw formed on the outer periphery is erected at a position located in the center of the longitudinal direction and closer to the left side in the lateral direction, and the metal screw shaft 21B is erected in the longitudinal direction. A length core for aligning with the linear length centering mark (black line) 26 (see FIG. 10A) marked on the second mold 3 at the center and on the right side in the lateral direction. A diamond-shaped opening 27 is formed as a positioning portion.

As shown in FIGS. 8A, 8B, and 8C, the anchor bolt 6 is located substantially in the center of the second member 22 in the longitudinal direction (left-right direction) and substantially in the center in the lateral direction (front-rear direction). The above-mentioned metal holding portion 5 having a cylindrical shape that can be inserted in the vertical direction penetrates and is fixed by welding or the like. Further, in the center of the left end portion of the second member 22 in the longitudinal direction (horizontal direction) in the lateral direction (front-rear direction), the length centering mark portion (black line) 28 described in the first formwork 2 (black line) 28 (FIG. 11 (a)). A diamond-shaped opening 29 is formed as a length core positioning portion for aligning with (see), and holes 30 for inserting wood screws 8 are formed at four surrounding locations so as to surround the opening 29 (see FIG. 8A). Is formed. Further, the screw shaft is substantially at the center of the second flat plate portion 25 constituting the right end portion in the longitudinal direction (left-right direction) of the second member 22 in the longitudinal direction (horizontal direction) and substantially at the center in the lateral direction (front-rear direction). A long hole 31 is formed in the longitudinal direction through which 21B (see FIG. 9B) is inserted, and wing bolts 32 and 32 are screwed into both sides of the long hole 31 in the lateral direction (front-back direction) to form two molds. A pair of screw holes 33, 33 for absorbing the difference in height between the frames 2 and 3 are formed. Further, linear markings 34, 34 (as a width core positioning portion) are placed on the outer surface and the upper surface of the two positions displaced by the same length on both sides in the longitudinal direction with respect to the center of the cylinder axis of the holding portion 5 of the second member 22. 8 (a) and 8 (b)) are shown. Align one of these two markings 34 and 34 with the width centering jig (water thread) 35 (see FIGS. 11A and 11B) stretched on the formwork 2 or 3. Therefore, the foundation of the second holder 20 can be positioned in the width direction (left-right direction).

A procedure for fixing the anchor bolts 6 to the formwork 2 and 3 with the second holder 20 configured as described above before the foundation is placed will be described.

First, similarly to the first holder 1, the anchor bolt 6 is inserted into the holding portion 5 of the second member 22 of the second holder 20 and held by the wing bolt 11. Next, the first member 21 is placed on the second formwork 3, so that the length centering mark portion (black line) 26 of the second formwork 3 coincides with the two corner portions 27K and 27K of the opening 27. Adjust the position. After adjusting the position, the first member 21 is fixed to the second formwork 3 with the wood screws 8 and 8 (see FIGS. 10A and 10B). Subsequently, the left end portion of the second member 22 holding the anchor bolt 6 in the longitudinal direction (left-right direction) is placed on the first formwork 2, and the first formwork 2 is placed on the two corner portions 29K and 29K of the opening 29. The position is adjusted so that the length centering mark portion 28 matches and the width centering jig (water thread) 35 matches the left width center positioning portion (mark mark) 34 corresponding to the width centering jig (water thread) 35 (FIG. 11 (FIG. 11). See a) and (b)). At the time of position adjustment, the position adjustment can be easily and quickly performed by inserting the elongated hole 31 at the right end of the second member 22 into the screw shaft 21B of the first member 21. After the position adjustment, the left end portion of the second member 22 is fixed to the first formwork 2 with four wood screws 8. Next, the two wing bolts 32, 32 are screwed into the screw holes 33, 33 of the second flat plate portion 25 to adjust the height of the second member 22 to absorb the difference in height between the left and right formwork 2, 3. do. After the height adjustment is completed, the wing nut 36 is tightened to the screw shaft 21B of the first member 21 to fix the right end portion of the second member 22 in the longitudinal direction (left-right direction), so that the anchor bolt 6 is used by the second holder 20. The work of fixing the bolts to the molds 2 and 3 is completed (see FIGS. 11A and 11B). The timing of inserting the anchor bolt 6 into the holding portion 5 of the second holder 20 and holding it by the wing bolt 11 is after the second holder 20 is fixed to the first formwork 2 and the second formwork 3. There may be.

FIG. 7 shows a state in which the anchor bolt 6 is fixed to the formwork 2 and 3 by the second holder 20 when the width of the foundation is 150 mm. Further, FIG. 12 shows a state in which the anchor bolt 6 is fixed to the formwork 2 and 3 by the second holder 20 when the width of the foundation is 200 mm. Like the first holder 1, the second holder 20 is also configured to be attached so as to correspond to the width dimension (150 mm to 220 mm) of the foundation.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

In the above embodiment, the main body 4 is formed in a U shape, but it may be formed in a flat plate shape. Further, although the main body portion 4 and the holding portion 5 are made of metal, they may be made of synthetic resin or the like.

Further, in the above-described embodiment, the anchor bolt 6 can be held in a position by one holder 1 and 20 according to the width of the foundation, but a dedicated holding set to a length dimension according to the width of the foundation. The anchor bolt 6 may be configured to be able to hold the position with a tool.

Further, in the above embodiment, the formwork 2 and 3 are made of wood, but they may be made of plastic.

Further, in the above-described embodiment, the first holder 1 is attached to the upper surface of one of the formwork 2, but it may be attached to the inner surface of one of the formwork 2. Further, although the second holder 20 is configured to be attached between the upper surfaces of both formwork 2 and 3, even if it is configured to be attached between the inner side surfaces of both formwork 2 and 3. good.

1,20 ... holder, 2,3 ... mold, 2A ... top surface, 4 ... main body, 4A ... top surface, 5 ... holding part, 6 ... anchor bolt, 6A ... screw part, 7 ... foundation forming part, 8 ... Wood screw, 9 ... length centering mark (black line), 10 ... length core positioning part, 10A ... long hole, 10B ... wire, 11 ... wing bolt, 12 ... width centering jig (water thread), 13 ... Width core positioning part (mark stamp), 21 ... 1st member, 21A ... hole, 21B ... screw shaft, 22 ... 2nd member, 23 ... 1st flat plate part, 24 ... vertical plate part, 25 ... 2nd flat plate part , 26, 28 ... Length centering mark (black line), 27, 29 ... Length core positioning part (opening), 27K, 29K ... Corner, 30 ... Hole, 31 ... Long hole, 32 ... Wing bolt, 33 ... Screw hole, 34 ... Width core positioning part (mark stamp), 35 ... Width centering jig (water thread), 36 ... Wing nut, 41 ... Base end part, 42 ... Tip part, 43 ... Horizontal plate part, 43A ... hole, 44 ... vertical plate, 44G ... outer surface, 44U ... upper surface

Claims (5)

A holder for holding the position of an anchor bolt whose lower end is embedded in the foundation of a building and whose upper end is provided so as to project 400 mm or more from the top surface of the foundation.
A main body portion having a base end portion attached to a formwork for forming the foundation and a tip portion extending from the base end portion toward the foundation forming portion in the formwork.
A holding portion provided at the tip end portion of the main body portion and having a cylindrical shape through which the anchor bolt can be inserted in the vertical direction is provided.
The holding portion is a holding tool characterized in that the holding portion is set at a height of 100 mm or more from the upper surface of the main body portion. The holder according to claim 1, wherein the formwork is made of wood and includes a wood screw for fixing a base end portion of the main body portion to the formwork. The formwork is provided with a width centering jig for positioning the anchor bolts at a predetermined position in the width direction of the foundation, and the main body portion has a width for positioning with respect to the width centering jig. The holder according to claim 1 or 2, further comprising a core positioning portion. The width centering jig is provided so as to be offset in the width direction with respect to a predetermined position in the width direction, and the width center positioning portion is separated from the center of the cylinder axis of the holding portion by the deviation. The holding tool according to claim 3, wherein the holding tool is provided. The formwork is provided with a length centering mark portion for positioning the anchor bolt at a predetermined position in the length direction of the foundation, and the main body portion positions the anchor bolt with respect to the length centering mark portion. The holder according to any one of claims 1 to 4, further comprising a length core positioning portion for the purpose.

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