JP2009013649A - Cover concrete thickness checker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover concrete thickness checker which is for use, before placing concrete, in determining whether or not a predetermined cover concrete thickness can be secured in any direction after placing the concrete. <P>SOLUTION: The cover concrete thickness checker 1 is for use in checking whether or not the cover concrete thickness as a thickness of the concrete around a reinforcement 2 can be secured by a predetermined value after placing the concrete. The cover concrete thickness checker 1 has: a rod member 3 having a long length; and spherical checking portions 4 arranged at both edges of the rod member 3 and different in diameter from each other. Herein the checking portions 4 each have a diameter equal to or more than at least a cover concrete thickness defined by the Building Code. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cover thickness inspection tool for inspecting whether or not a cover thickness as a thickness of concrete around a reinforcing bar is ensured by a predetermined interval after placing concrete.

  Conventionally, when constructing a foundation or the like, for example, a concrete formwork is installed around the reinforcing bar, or a sleeve for forming a piping hole in the foundation after construction is installed on the reinforcing bar. However, in the above-mentioned foundation, if the reinforcing bars inside the concrete frame corrode, the tensile strength decreases. Therefore, in order to prevent corrosion of these reinforcing bars, the minimum concrete thickness around the reinforcing bars, that is, the cover thickness, is It is defined by the standard law. Therefore, rebars are assembled, concrete formwork, sleeves, etc. are installed. After concrete placement, whether or not the above-mentioned cover thickness can be secured, whether the distance between the rebar and concrete formwork before concrete placement, It was necessary to judge by measuring the distance between the sleeve and the sleeve with a tape measure or the like. However, in the measurement using the tape measure, there are problems that the measured value differs depending on the angle at which the scale is viewed, and that individual differences occur depending on the measurer. In addition, the space between the reinforcing bars near the ground in the concrete formwork and the concrete formwork, the distance between the sleeve and the surrounding reinforcing bars, etc., is a narrow work space. It was difficult. For this reason, the following inspection tools have been devised in order to ensure a predetermined cover thickness between the concrete formwork and the reinforcing bars.

  As shown in FIG. 18, when constructing a reinforced concrete structure, a concrete cover thickness inspection used for correcting the concrete cover thickness of the reinforcing bars by driving between the formwork and the reinforcing bars and widening the space between them. A first surface 103 and a second surface 104 which are opposed to each other in the thickness direction of a wedge 102 attached to the tip of a rod member 101, and the first surface 103 is substantially planar. The second surface 104 is formed so that the plurality of flat portions 105 each having a constant thickness of the wedge 102 are wedges in the flat portions 105 as they go from the front end to the rear end of the concrete cover thickness correcting wedge 102. 102 is formed so as to gradually increase in thickness (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2004-132081

  However, although the above-described cover thickness inspection tool 100 can correct a portion where the cover thickness is narrow to a predetermined cover thickness, whether or not the predetermined cover thickness can be secured only from one direction of the inspection tool. I can't judge. Therefore, it is difficult to use in places where the work space is narrow, such as the distance between the reinforcing bars near the ground in the concrete formwork and the concrete formwork and the distance between the sleeve and the surrounding reinforcing bars.

  The present invention has been made for the purpose of solving the various problems as described above, does not cause individual differences, and can be operated in any direction even in a narrow work space. The present invention also relates to a cover thickness inspection tool that can determine whether or not a predetermined cover thickness can be ensured after construction before placing concrete.

  In order to achieve the above-mentioned object, the cover thickness inspection tool according to claim 1, wherein the concrete placement is performed to determine whether or not the cover thickness as the thickness of the concrete around the reinforcing bars is secured at a predetermined interval after the concrete placement. A cover thickness inspection tool for inspecting in advance, comprising a long rod member and a spherical inspection portion provided at least at one end of the rod member, and the inspection The section has at least a diameter equal to or larger than the cover thickness specified in the Building Standard Law.

  The cover thickness inspection tool according to claim 2 is characterized in that the inspection portions are provided at both ends of the bar member and have different diameters.

  The cover thickness inspection tool according to claim 3 is characterized in that the bar member is extendable.

  The cover thickness inspection tool according to claim 4 is characterized in that at least one of the spherical inspection parts is detachably attached to the bar member.

  The cover thickness inspection tool according to claim 5 is characterized in that a magnet is provided at an end portion of the bar member on the side where the spherical inspection portion is detachably attached.

  The cover thickness inspection tool according to claim 6 is characterized in that the colors of the spherical inspection portions are different from each other.

  The cover thickness inspection tool according to claim 7, wherein at least one of an interval between the outer sides of the spherical inspection portion and an interval between the inner sides of the spherical inspection portion is the same as the joint length of the reinforcing bar. It is a feature.

  The cover thickness inspection tool according to claim 8 is characterized in that the bar member is bendable.

  According to the cover thickness inspection tool according to claim 1, the inspection apparatus comprises: a long bar member; and a spherical inspection part provided at an end of at least one side of the bar member; The part has at least a diameter greater than the cover thickness specified by the Building Standards Act. Therefore, for example, in the concrete formwork used when constructing the foundation, whether or not the distance between the ground and the reinforcing bar is maintained so that a predetermined cover thickness can be secured after the concrete is placed. The operator inserts a long bar member from the outside of the concrete formwork, inserts the inspection part provided at the tip of the member into the interval, and inspects the cover thickness. Can inspect the cover thickness without putting your hands. Furthermore, since the inspection part is spherical, no matter which direction the inspection part is inserted into the space between the reinforcing bar and the sleeve, or the reinforcing bar and the concrete formwork from any direction, the distance is set to a predetermined level after the concrete is placed. It can be determined whether or not the thickness is maintained. Further, by using a spherical inspection section, there is an advantage that there is no error due to individual differences compared to the case where measurement is performed using a tape measure or the like.

  According to the cover thickness inspection tool according to claim 2, since the inspection portions are respectively provided at both ends of the bar member and have different diameters, it corresponds to the difference in the cover thickness which varies depending on the construction site. Therefore, it is not necessary to carry or prepare a plurality of inspection tools, which can contribute to improvement of work efficiency.

  According to the cover thickness inspection tool of claim 3, since the bar member is extendable, as described above, for example, in the concrete formwork used when constructing the foundation, the ground and the reinforcing bar When inspecting whether or not the interval is maintained so that a predetermined cover thickness can be secured after the concrete is placed, the operator manually moves into the concrete formwork by extending the bar member. You can inspect without putting it in. And after the above-mentioned test | inspection is complete | finished, there exists an advantage that portability and storage property improve by shrink | contracting a rod member.

  According to the cover thickness inspection tool of the fourth aspect, at least one of the spherical inspection portions is detachably attached to the bar member. Therefore, by removing the inspection part after inspecting the cover thickness as described above, there is an advantage that it becomes more compact, and portability and storage properties are further improved. Furthermore, since the cover thickness determined by the Building Standards Act differs depending on the construction site, if the inspection part is made detachable and multiple spherical inspection parts with other diameters are prepared, the cover thickness is inspected everywhere. It is economical because it does not require a plurality of inspection tools for measuring different cover thicknesses, and is excellent in portability and storage.

  According to the cover thickness inspection tool of the fifth aspect, the magnet is provided at the end of the bar member on the side where the spherical inspection portion is detachably attached. Therefore, for example, iron scraps such as nails and wire pieces falling on the ground in the concrete formwork for constructing the foundation, the operator bothered to put the hand in the concrete formwork and collect these iron scraps. Even if it is not, since the said iron scrap can be easily collect | recovered from this concrete formwork, work efficiency can be improved.

  According to the cover thickness inspection tool of the sixth aspect, the colors of the spherical inspection portions are different from each other. Therefore, when inspecting the different cover thickness depending on the construction site, which inspection unit to use between the inspection unit provided on one side of the bar member and the inspection unit provided on the other side, The size of the inspection part is not used after being visually confirmed, but it is judged based on the color. Therefore, the possibility of using the inspection part on one side and the other side by mistake is reduced, resulting in work errors. Can contribute to reduction.

  According to the cover thickness inspection tool of claim 7, at least one of the interval between the outer sides of the spherical inspection part and the interval between the inner sides of the spherical inspection part is the same as the joint length of the reinforcing bar. ing. Therefore, in addition to the effect as the cover thickness inspection tool as described above, the joint length of the reinforcing bar can be measured without using a tape measure or the like, and the joint length can be reliably ensured. Therefore, the number of tools carried by the operator can be reduced, and the number of tools to be used can be reduced, thereby contributing to improvement in work efficiency.

  According to the cover thickness inspection tool of the eighth aspect, the bar member is bendable. For this reason, for example, the cover thickness of the space between the reinforcing bar near the ground in the concrete formwork used when constructing the foundation and the concrete formwork or the place where the reinforcing bar such as the gap between the reinforcing bar and the ground is involved Also when inspecting, the cover thickness of these portions can be easily inspected by bending the bar member and inserting the inspection portion into the concrete formwork.

  The best embodiment of the cover thickness inspection tool in the present invention will be described below. As shown in FIG. 9, the cover thickness inspection tool 1 according to the present invention determines whether or not the cover thickness as the thickness of the concrete around the reinforcing bar 2 is ensured at a predetermined interval after the concrete placement. It is a cover thickness inspection tool 1 for inspecting before, a long bar member 3, a spherical inspection unit 4 provided at both ends of the bar member 3 and having different diameters, In addition, each of the inspection sections 4 has a diameter that is at least equal to the cover thickness defined in the Building Standard Law.

  The said cover thickness is the thickness of the concrete around the reinforcing bar 2, for example, as shown in FIG. 9, the interval A between the concrete mold 5 and the reinforcing bar 2 used when constructing the foundation, and the foundation after construction. The distance B between the sleeve 6 and the reinforcing bar 2 used to secure the piping path in the frame, the distance C between the reinforcing bar 2 and the ground 7 and the like become the cover thickness after the concrete is placed. These cover thicknesses are necessary to protect the reinforcing bars 2 in the concrete from rust after the concrete is placed, and are determined to ensure a predetermined cover thickness according to the Building Standard Law. The cover thickness varies depending on the construction location. For example, the distance A and the distance B, which are the rising parts of the foundation, are 40 mm or more, and the distance C, which is a part in contact with the ground 7 at the foundation, is 60 mm or more, and it is determined that the cover thickness is secured.

  For example, the bar member 3 can be used to inspect the cover thickness of the concrete form 5 near the ground 7 used when constructing the foundation, even if the operator does not bother to put the hand into the concrete form 5. It is formed to be long enough to be performed. The rod member 3 can be suitably made of aluminum, stainless steel, etc. that are lightweight, strong, corrosion-resistant, and inexpensive. However, the material of the bar member 3 is not limited to that described above, and other synthetic resin or wooden materials may be used and can be appropriately selected. Moreover, although the bar member 3 may be comprised from the single member, considering storage property and portability, for example like the cover thickness inspection tool 1 which concerns on 1st Embodiment shown in FIG. The plurality of rod-like piece members 3a may be connected to each other. Further, as shown in FIG. 1, the rod-shaped piece member 3a has a male screw portion 31a at one end portion of a long cylindrical body portion from one end portion of the rod-shaped piece member 3a. It is formed so as to protrude in the length direction. A female screw portion 32a is formed on the inner side of the rod-like piece member 3a in the length direction from the other end portion of the rod-like piece member 3a at the other end portion of the rod-like piece member 3a. Therefore, when connecting the rod-shaped piece members 3a to each other, the male screw portion 31a of one rod-shaped piece member 3a is screwed into the female screw portion 32a of the other rod-shaped piece member 3a, so that the rod member 3 has a desired length. What is necessary is just to connect the some rod-shaped piece member 3a until it becomes.

  Further, the bar member 3 in the cover thickness inspection tool 1 according to the second embodiment is formed to be extendable as shown in FIG. In this case, the rod member 3 is formed by combining a plurality of cylindrical piece members 3b formed in a substantially cylindrical shape. That is, as shown in FIG. 5, another cylindrical piece member 34b (with a slightly smaller diameter than the one cylindrical piece member 33b (3b) is provided inside one cylindrical piece member 33b (3b). 3b) is provided. Then, the other cylindrical piece member 34b (the other cylindrical piece member 34b (3b) is slid with the inner peripheral surface 33c of the one cylindrical piece member 33b (3b). 3b) is formed so that the outer diameter of the widened portion 35 formed at the other side end and the inner diameter of one cylindrical piece member 33b (3b) are substantially equal. Therefore, as shown in FIG. 5B, when the rod member 3 is expanded and contracted, the inner peripheral surface 33c of one cylindrical piece member 33b (3b) and the widened portion of the other cylindrical piece member 34b (3b). Since a force larger than the frictional force generated when sliding with the outer peripheral surface 34c of 35 is required, the bar member 3 does not expand and contract against the operator's intention.

  Moreover, the diameter of the inner periphery of the reduced width portion 36 formed at one end of one cylindrical piece member 33b (3b) is the diameter of the outer periphery of the widened portion 35 of the other cylindrical piece member 34b (3b). As shown in FIG. 5 (a), when the rod member 3 is extended, the other cylindrical piece member 34b (3b) becomes one cylindrical piece member 33b (3b). ) Can not be pulled out. In addition, it is not necessary to provide the said reduced width part 36 in the cylindrical piece member 3b of one side edge part among the some cylindrical piece members 3b which comprise the rod member 3 shown in FIG. It is not necessary to provide the widened portion 35 in the cylindrical piece member 3b. In this way, the bar member 3 can be expanded and contracted by constituting the bar member 3 from a plurality of cylindrical piece members 3b. However, the mechanism for making these rod members 3 extendable and retractable is an example, and is not limited to the above.

  Then, the bar member 3 may be bendable, and the cover thickness inspection tool 1 according to the third embodiment has a second embodiment in order to make the bar member 3 bendable as shown in FIG. A hinge part 8 as shown in FIG. 13 is provided on the cylindrical piece member 3b at one end of the cylindrical piece member 3b constituting the rod member 3 according to the embodiment. That is, the divided cylindrical piece members 30b obtained by dividing the cylindrical piece member 3b are connected to each other by the bolts 9a and the nuts 9b so as to be bendable, thereby forming the hinge portion 8. Therefore, as shown in FIG. The cylindrical piece member 3b is bendable. And the hinge part 8 is not limited to the above-mentioned position, You may provide in any position of the bar member 3, Furthermore, the number may be plural. Further, the means for making the rod member 3 bendable is not the means using the hinge portion 8 as described above, but for example, the cylindrical piece member 3b itself may be formed of a bendable material. . Further, like the cover thickness inspection tool 1 according to the fourth embodiment shown in FIG. 16, the bar-like piece member 3a at one end of the bar-like piece member 3a constituting the bar member 3 according to the first embodiment. The bent bar-shaped piece member 30a bent in advance may be used, and the bar-shaped piece member 3a may be formed of a bendable material. Furthermore, the cover thickness inspection according to the third embodiment A hinge portion 8 may be provided like the tool 1.

  As shown in FIG. 2, the inspection portion 4 is formed in a spherical shape. The spherical inspection section 4 can be made of inexpensive and durable synthetic resin, but may be made of metal such as aluminum or stainless steel or wooden material. You can select and use. In addition, as shown in FIG. 2, the spherical inspection unit 4 is provided at both ends of the bar member 3 and preferably has different diameters. May be provided only on one side of the rod member 3, and the inspection parts 4 may have the same diameter when provided at both ends of the bar member 3. And it is preferable that the diameter of the test | inspection part 4 has a diameter equivalent to the cover thickness each defined by the Building Standard Law, and thereby, as shown in FIG. 9, for example, the reinforcing bar 2 and the concrete formwork 5 The cover thickness determined by the Building Standards Act is only to check whether these inspection parts 4 can be inserted into the interval A, the interval B between the reinforcing bar 2 and the sleeve 6, or the interval C between the reinforcing bar 2 and the ground. Can be determined. In the present embodiment, as described above, it is necessary to secure the cover thickness of the distance A and the distance B of 40 mm or more and the cover thickness of the distance C of 60 mm or more. Is provided with an inspection section 4 having a diameter of 40 mm, and an inspection section 4 having a diameter of 60 mm is provided at the other end. However, the inspection part 4 should just be the diameter equivalent to the cover thickness at least defined by the Building Standard Law, and may be larger than that.

  Further, as described above, since the thickness varies depending on the location as described above, it is preferable to prepare a plurality of pattern diameter inspection portions 4. And in the cover thickness inspection tool 1 which concerns on 1st and 4th embodiment, as shown in FIG. 1, in order to be able to replace | exchange the test | inspection part 4 of these several pattern diameter easily, as shown in FIG. 4 is attached to one end of the rod member 3 to which the screw 4 is attached, or to the male screw portion 31a or the female screw portion 32a formed on the rod-like piece member 3a at the other end. A female screw portion 42 is formed in the inspection portion 4, or a male screw portion 41 is formed in the inspection portion 4 at the other end, and the inspection portion 4 is detachably screwed to the bar member 3.

  Further, in the cover thickness inspection tool 1 according to the second and third embodiments, as shown in FIG. 6, the inspection part 4 at the other end is formed to be hollow, and the inspection part 4 is When the rod member 3 is attached, the other end of the rod member 3 is inserted into an insertion hole 43a provided so as to penetrate from the introduction portion 43 protruding in a substantially cylindrical shape from the surface of the inspection portion 4 to the inside thereof. It is inserted into the inspection unit 4 and fixed by screwing the other end of the bar member 3 with a screw 10 from the outside of the inspection unit 4. The inspection portion 4 at one end is not hollow, unlike the inspection portion 4 at the other end, and a screw hole 44 is formed continuously in a part of the guide hole 44a as shown in FIG. Has been. And it can be detachably screwed with a screw part 37 formed at one end of the bar member 3. Further, as shown in FIG. 7, the inspection unit 4 at the other side end may be attached by the same means as the inspection unit 4 at the one end described above.

  Further, in the above-described embodiment, for example, as shown in FIG. 3, the inspection portion 4 at one end and the inspection portion 4 at the other end are different in diameter, and for example, the inspection portion 4 at one end. These colors are also preferably different from each other, for example, the inspection section 4 at the other end is red, and the inspection section 4 used when the operator inspects the cover thickness. It becomes difficult to make a mistake. In the above-described embodiment, when the inspection portion 4 detachably provided on the rod member 3 is removed, one end portion of the rod member 3, which is shown in FIG. As shown in FIG. 12, the magnet 11 is embedded, and thereby, for example, as shown in FIG. 12, iron scraps 12 such as bolts, nuts, nails and wire pieces falling on the ground 7 in the concrete mold 5 are removed. The operator can pick up the concrete formwork 5 without having to put a hand. In the present embodiment, the magnet 11 is provided only at one end of the bar member 3 as shown in FIG. 8, but it may be provided at the other end, and can be changed as appropriate. it can.

A method of using the cover thickness inspection tool 1 configured as described above will be described.
FIG. 9 is an example of use when inspecting whether or not the space B between the reinforcing bar 2 and the sleeve 6 is ensured by a predetermined distance using the cover thickness inspection tool 1 according to the second embodiment. In addition, when using the cover thickness inspection tool 1, an extendable bar is provided so that the inspection section 4 reaches at least the target reinforcing bar 2 to be inspected for the cover thickness among the reinforcing bars 2 in the concrete mold 5. With the member 3 extended, the cover thickness inspection tool 1 is inserted from the upper opening 51 of the concrete mold 5. And since the inspection part 4 has a diameter equivalent to the cover thickness stipulated by the Building Standard Law, it is determined whether or not the inspection part 4 can be inserted into the interval B between the reinforcing bar 2 and the sleeve 6. And if it can insert the test | inspection part 4 in the space | interval B as shown in FIG. 9, it can confirm that the cover thickness after construction can ensure only the space | interval defined by the Building Standard Law. However, as shown in FIG. 11, when the inspection unit 4 is to be inserted into the interval B, if the interval B is too narrow to insert the inspection unit 4 into the interval B, the construction is performed. Since the subsequent cover thickness cannot be secured sufficiently, it is necessary to increase the interval until the inspection portion 4 can be inserted by shifting the position of the sleeve 6 as shown in FIG. 11, for example.

  The distance B between the rebar 2 and the sleeve 6 needs to be secured at least 40 mm or more, but the distance C between the rebar 2 and the ground 7 needs to be secured 60 mm or more unlike the distance B. Therefore, it is necessary to use the inspection part 4 having a larger diameter provided on the opposite side to the inspection part 4 inspecting the interval B. Therefore, as shown in FIG. 10, it was determined whether or not the inspection unit 4 could be inserted into the interval C by the same method as described above, and the inspection unit 4 could be inserted into the interval C. In this case, it can be confirmed that the cover thickness after construction can be ensured only by the interval defined in the Building Standard Law. However, when trying to insert the inspection unit 4 into the interval C, if the interval C is too narrow to insert the inspection unit 4 into the interval C, the rebar 2 is reassembled, or the reinforcing bar It is necessary to widen the interval until the inspection unit 4 can be inserted by shifting 2 or the like. Of course, the cover thickness inspection tool 1 according to other embodiments can be used as described above.

  Further, when the cover thickness inspection tool 1 according to the third embodiment is used, for example, as shown in FIG. 15, the hinge portion 8 provided on the cylindrical piece member 3b at one end is used to By bending the cylindrical piece member 3b, for example, the inspection part 4 can be easily inserted by the interval B between the reinforcing bar 2 and the sleeve 6, and workability can be improved. In this case, the rod-like piece member 3a itself may be bent even if the rod-like piece member 3a does not have the hinge portion 8. Of course, the cover thickness inspection tool 1 according to the fourth embodiment can also be used as described above.

  As shown in FIG. 17, when connecting the reinforcing bars 2, a joint length as an overlapping portion that is a predetermined multiple of the diameter of the reinforcing bars 2 is required. Therefore, in this embodiment, at least one of the interval X between the insides of the inspection unit 4 and the interval Y between the outsides of the inspection unit 4 is the interval Z required when connecting the reinforcing bars 2. Is the same. That is, for example, when the diameter of the reinforcing bar 2 used in a detached house is 19 mm and the joint length is required to be 40 times or more the diameter of the reinforcing bar 2, for example, as shown in FIG. If the distance X between the insides is set to 760 mm, it is possible to easily determine whether or not the distance Z that is the joint length of the reinforcing bar 2 can be ensured by a predetermined distance without using a measuring tool such as a tape measure. .

  Further, for example, when the diameter of the reinforcing bar 2 used in a detached house is 22 mm and the joint length is required to be 40 times or more that of the reinforcing bar 2, for example, as shown in FIG. If the interval Y between each other is set to 880 mm, it is possible to easily determine whether or not the interval Z that is the joint length of the reinforcing bar 2 can be ensured by a predetermined interval without using a measuring tool such as a tape measure. In addition to the above-described interval X and interval Y, the distance from the outside of one inspection unit 4 to the inside of the other inspection unit 4 may be the same as the interval Z that is the joint length of the reinforcing bar 2. In addition, the interval X and the interval Y may be an interval longer than the required joint length of the reinforcing bar 2. And in the bar member 3 of the cover thickness inspection tool 1 according to the above-described embodiment, as shown in FIG. 4, the scale 13 may be engraved, so that a tape measure or the like is not separately prepared. In both cases, for example, the diameter of the sleeve 6 and the interval between the upper openings 51 of the concrete mold 5 can be easily measured.

  As described above, it is possible to determine whether or not the cover thickness can be ensured after placing the concrete before placing the concrete. And in the above-mentioned use example, although explained as an example of the inspection of the cover thickness at the time of constructing the foundation, the cover thickness inspection tool 1 according to the present invention is not only at the time of construction of the foundation, Of course, it can also be used for the inspection of the cover thickness when forming other concrete frames such as floors and walls.

  The cover thickness inspection tool 1 according to the present invention is used not only in the construction field such as foundations and pillars, but also in the machine field, for example, in order to confirm whether or not the distance between the members is held by a predetermined distance. Can be used.

Overall view of the cover thickness inspection tool according to the first embodiment Overall perspective view of a cover thickness inspection tool according to the second embodiment Whole perspective view of the cover thickness inspection tool according to the second embodiment in which the colors of the inspection parts are different from each other Overall view of the cover thickness inspection tool according to the second embodiment with the bar member extended. Sectional drawing which shows the structure of the bar member of the cover thickness inspection tool which concerns on 2nd Embodiment The figure which shows the method of attaching an test | inspection part to the other side edge part of the bar member in the cover thickness test | inspection tool which concerns on 2nd Embodiment. The figure which shows the other method of attaching an test | inspection part to the other side edge part of the bar member in the cover thickness inspection tool which concerns on 2nd Embodiment. The figure which shows the method of attaching an test | inspection part to the one side edge part of the bar member in the cover thickness test | inspection tool which concerns on 2nd Embodiment. Usage state diagram of the cover thickness inspection tool according to the second embodiment Usage state diagram of the cover thickness inspection tool according to the second embodiment Usage state diagram of the cover thickness inspection tool according to the second embodiment The figure which shows the state which picks up iron scraps using a magnet A perspective view showing the structure of the hinge part The figure which shows the state which a bar member bends Usage state diagram of the cover thickness inspection tool according to the third embodiment Overall view of the cover thickness inspection tool according to the fourth embodiment The figure which shows the state which measures the joint length of a reinforcing bar using a cover thickness inspection tool Diagram showing conventional technology

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover thickness inspection tool 2 Reinforcing bar 3 Bar member 4 Inspection part 5 Concrete formwork 6 Sleeve 7 Ground

Claims (8)

A cover thickness inspection tool for inspecting whether or not a cover thickness as a thickness of concrete around a reinforcing bar is ensured only after a predetermined interval after the concrete placement,
A long bar member;
A spherical inspection portion provided on at least one end of the bar member;
And having
The cover thickness inspection tool, wherein the inspection section has a diameter at least equal to a cover thickness defined in the Building Standard Law.   The cover thickness inspection tool according to claim 1, wherein the inspection portions are provided at both ends of the rod member and have different diameters.   The cover thickness inspection tool according to claim 1 or 2, wherein the bar member is extendable.   4. The cover thickness inspection tool according to claim 1, wherein at least one of the spherical inspection parts is detachably attached to the bar member.   The cover thickness inspection tool according to claim 4, wherein a magnet is provided at an end of the bar member on the side where the spherical inspection portion is detachably attached.   6. The cover thickness inspection tool according to claim 1, wherein colors of the spherical inspection portions are different from each other.   The cover according to claim 1, wherein at least one of an interval between the outer sides of the spherical inspection portion and an interval between the inner sides of the spherical inspection portion is the same as a joint length of the reinforcing bar. Thickness inspection tool.   The cover thickness inspection tool according to claim 1, wherein the bar member is bendable.

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