JP7284922B2 - Kasagi replacement construction method - Google Patents

Description

The present invention relates to a coping replacement method for replacing an existing coping installed at a rising portion of a parapet with a new coping.

A flat roof of a building is usually provided with a parapet that extends upward along the perimeter. A parapet consists of a rising portion that rises upward from a flat roof surface and a coping that is fixed to the upper portion of the rising portion. Therefore, a device has been proposed in which a decorative material is provided on the outer peripheral surface of the rising portion to improve the design of the parapet (for example, Patent Document 1).

Japanese Utility Model Laid-Open No. 57-13762

By the way, the top rails installed at the rising part are replaced with new top rails when they deteriorate over time. At this time, if the model number of the existing coping has been discontinued, it may not be possible to install a new coping that has the same shape as the existing coping. If the shape of the old and new coping is different in this way, the traces of removal of the existing coping will be exposed on the outer peripheral surface of the riser, which may impair the appearance of the building. In addition, if a new coping is formed each time according to the shape of the removed coping so that the existing coping remains are not exposed, there is a problem that the costs increase and the client's financial burden increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is a method of replacing an existing coping with a new coping that can maintain the design around the parapet while keeping costs down. The purpose is to provide a method.

A first method for replacing toppings of the present invention is a method for replacing existing toppings installed on the upper part of the rising portion of a parapet with new toppings, wherein the upper end portion of the outer peripheral surface of the rising portion a removing step of removing the existing coping having a first outer peripheral covering portion covering the rising portion from the rising portion; is installed on the top of the rising portion, and the lower end of the second outer covering portion installed on the rising portion is arranged at a position higher than the lower end position of the first outer covering portion before removal. covering a range from the lower end of the second outer covering portion to the height where the lower end of the first outer covering portion was positioned, of the outer peripheral surface of the rising portion, with a decorative curtain plate material. and

In the second coping replacement construction method of the present invention, the second outer peripheral covering portion includes an upper curtain plate portion covering an upper end portion of the outer peripheral surface of the rising portion, and a lower end of the upper curtain plate portion. A return piece protruding toward the rising portion and a lower curtain plate portion extending downward from the edge of the return piece on the side of the rising portion, and the covering step includes the upper end portion of the decorative curtain plate material. abuts on an internal corner formed by the return piece and the lower curtain plate.

A third method for replacing top rails of the present invention is characterized in that the covering step installs the decorative curtain plate material having an L-shaped cross section.

In the fourth method for replacing copings of the present invention, the installation step includes installing a plurality of the new copings in a horizontal direction, and the covering step includes installing a plurality of the decorative curtain boards in the horizontal direction, and installing the new copings horizontally. Adjacent new top rails are connected by a top rail joint cover that straddles each horizontal edge, and a curtain plate joint cover that straddles each horizontal edge of the horizontally adjacent decorative curtain plate materials is provided. The connecting step is characterized by aligning joint positions of the top rail joint cover and the curtain plate joint cover.

In the fifth coping replacement construction method of the present invention, the connecting step includes fixing the coping joint cover to only one of the adjacent new copings with screws, and fixing the curtain plate joint cover to only one of the adjacent new copings. , the decorative curtain plate is fixed to only one of the adjoining decorative curtain plates by means of a screw.

According to the first coping replacement construction method of the present invention, when the lower end of the second outer covering part installed on the rising part is positioned higher than the lower end position of the first outer covering part before removal. Second, of the outer peripheral surface of the rising portion, the range from the lower end of the second outer peripheral covering portion to the height where the lower end of the first outer peripheral covering portion was located is covered with the decorative curtain plate material. Therefore, even if the shapes of the existing coping and the new coping are different from each other, the rising part covered by the existing coping is not exposed, and the design of the building appearance can be maintained.

According to the second coping replacement construction method of the present invention, the covering step is to bring the upper end of the decorative curtain board into contact with the inside corner formed by the return piece and the lower curtain board. . Therefore, it is possible to effectively suppress the possibility of water entering the inside of the rising portion from the boundary between the newly installed coping and the decorative curtain plate material, thereby improving waterproofness.

According to the third coping replacement construction method of the present invention, in the covering step, the decorative curtain plate material having a simple L-shaped cross section is installed. Therefore, it is possible to keep the design around the parapet at low cost, compared to the case where the new coping is molded to match the shape of the existing coping each time.

According to the fourth method for replacing top rails of the present invention, in the connecting step, the joint positions of the top rail joint cover that connects the newly installed top rails and the curtain plate joint cover that connects the decorative curtain plate members are aligned. It is said that Therefore, the appearance of the building can be given a sense of unity, and the design can be improved.

According to the fifth top rail replacement construction method of the present invention, in the connecting step, the top rail joint cover is screw-fixed only to one of the adjacent new top rails, and the curtain plate joint cover is attached to the adjacent decorative top rail. It is supposed to be fixed with screws only to one of the decorative curtain plate materials. Therefore, even if the newly installed coping and decorative curtain boards expand and contract due to external factors such as temperature and humidity, each member can be prevented from being damaged.

(a) A schematic plan view showing a building, (b) a cross-sectional view taken along the line AA of FIG. 1(a). (a) A cross-sectional view showing a situation where the new coping is installed at the rising portion, (b) A plan view showing the parapet with the new coping installed. BB line sectional view of FIG. 2(b). The front view which shows the state which installed the new coping to the rising part. Sectional drawing which shows the state which fixed the decorative curtain board|plate material to the new coping. The perspective view which shows a decorative curtain board|plate material. FIG. 6 is an enlarged view of part C in FIG. 5 ; (a) A plan view showing a situation in which newly installed copings are connected by coping joint covers, (b) a perspective view showing coping joint covers. (a) Perspective view showing a corner coping joint cover, (b) Perspective view showing a corner coping joint cover. (a) A front view showing a state in which the newly installed copings are connected by a coping joint cover, (b) A cross-sectional view showing a state in which the cosing joint cover is installed on the newly installed copings. (a) A front view showing a state in which decorative curtain boards are connected by a curtain board joint cover, (b) a perspective view showing a curtain board joint cover, (c) a perspective view showing a corner joint cover, (d) a corner The perspective view which shows a joint cover. Sectional drawing which shows the state which installed the curtain board joint cover in the decorative curtain board material.

BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment of the coping replacement construction method according to the present invention will be described below with reference to the drawings. The coping replacement construction method of the present application is a construction method used when replacing an existing coping installed on the upper part of the rising part of a parapet with a new coping having a shape different from that of the existing coping. It is used when the part of the surface covered by the existing coping cannot be covered by the new coping alone.

As shown in FIG. 1(a), the parapet 1 is a portion installed along the outer periphery of the flat roof R of the building S, and is formed on the balcony shown in the figure, as well as on the roof. As shown in FIG. 1(b), the parapet 1 before the coping replacement construction method includes a rising portion 2 rising above the flat roof surface Ra and an existing coping 3 fixed to the upper portion of the rising portion 2. and consists of In addition, the parapet 1 is a part that can be visually recognized when looking up at the building S, and is a component of the exterior of the building.

As shown in FIG. 1B, the rising portion 2 includes a pair of exterior materials 21 that form an inner peripheral surface 2a, which is a side surface on the side of the flat roof R, and an outer peripheral surface 2b, which is a side surface opposite to the inner peripheral surface 2a. , an exterior base material 22 that supports a pair of exterior materials 21, a top rail support material 23 that is installed at the upper end of the exterior foundation material 22 and supports the existing top rail 3, and a pair of exterior materials 21 and top rail support material 23. and a base covering material 24 having a U-shaped cross section covering the upper end. A handrail 25 is installed on the inner peripheral surface 2a.

The existing coping 3 shown in FIG. 1(b) is a member extending in the horizontal direction and having a substantially U-shaped cross section. The existing coping 3 includes a first upper covering portion 31 that covers the upper portion of the rising portion 2, a first inner peripheral covering portion 32 that hangs down from the edge of the first upper covering portion 31 on the inner peripheral surface 2a side, and a second and a first outer peripheral covering portion 33 hanging down from the end surface of the outer peripheral surface 2 b side of the upper covering portion 31 . The existing coping 3 is made of ceramic, and the first upper covering portion 31 is crimped onto the upper surface of the existing coping base material 24 with a mortar material (not shown). The first inner peripheral covering portion 32 covers the upper end portion of the inner peripheral surface 2b of the rising portion 2, while the first outer peripheral covering portion 33 covers the upper end portion of the outer peripheral surface 2b of the rising portion 2. As shown in FIG.

In the method of replacing the existing coping 3 with the new coping 4, as shown in FIG. The portion covered with the top rail 3 is exposed. At this time, the inner peripheral surface 2a and the outer peripheral surface 2b of the existing coping 3 are discolored and aged due to the portions covered by the first inner peripheral coating portion 32 and the first outer peripheral coating portion 33 of the existing coping 3 and the uncovered portions. The degree of deterioration is in a different state. In particular, the outer peripheral surface 2b of the rising portion 2 is an element that constitutes the appearance of the building, so the difference is conspicuous when looking up at the building S.

Next, a coping base material 26 that serves as a base for the new coping 4 is installed on top of the base covering material 24 . The top rail base material 26 shown in FIG. 2(a) includes a fixing portion 26a screw-fixed to the top rail support member 23 via the base covering material 24, and the edge of the fixing portion 26a on the side of the inner peripheral surface 2a and the outer peripheral surface 2b. and a pair of extending portions 26b extending downward from the side edges.

As shown in FIG. 3 , after screwing the top rail base member 26 to the top rail support member 23 , the new top rail 4 is installed on the rising portion 2 of the parapet 1 . A new coping 4 installed on the parapet 1 in place of the existing coping 3 is formed by extruding aluminum. Like the existing coping 3, the new coping 4 is a member extending in the horizontal direction and having a substantially U-shaped cross section. A second inner peripheral covering portion 42 hanging down from the edge of the inner peripheral surface 2a side of the second upper covering portion 41 and a second outer covering portion 43 hanging down from the edge of the outer peripheral surface 2b side of the second upper covering portion 41. have. The second inner peripheral covering portion 42 includes a curtain plate portion 42a that covers the upper end portion of the inner peripheral surface 2a of the rising portion 2, and a first return piece 42b that is formed by bending the lower end of the curtain plate portion 42a toward the rising portion 2 side. is equipped with On the other hand, the second outer peripheral covering portion 43 includes an upper curtain plate portion 43a that covers the upper end portion of the outer peripheral surface 2b of the rising portion 2, and a second return piece that protrudes in the direction of the rising portion 2 from the lower end portion of the upper curtain plate portion 43a. 43b, a lower curtain plate portion 43c extending downward from the edge of the second return piece 43b on the rising portion 2 side, and a third return piece 43d formed by bending the lower end of the lower curtain plate portion 43c toward the rising portion 2 side. equipped. In addition, the lower end of the upper curtain plate portion 43a extends further downward than the second return piece 43b. It can flow downwards.

As shown in FIG. 2(b), a plurality of new copings 4 are installed in the horizontal direction according to the length of the rising portion 2, and when installed at corners or inside corners, the edges are set at 45°. to form the so-called lugs and lugs. As shown in FIG. 3, when the new coping 4 is installed on the rising portion 2, the first return piece 42b of the second inner circumference covering portion 42 and the third return piece 43d of the second outer circumference covering portion 43 are attached to the coping foundation. The lower ends of the pair of extending portions 26b of the material 26 are hooked and installed. At this time, the adjacent new coping 4 are installed with a gap Y1 of about 5 mm as shown in FIG.

As shown in FIG. 3, when the new coping 4 is installed above the rising portion 2, the second inner peripheral covering portion 42 covers the upper end portion of the inner peripheral surface 2a of the rising portion 2, and the second outer peripheral covering portion 43 covers the upper end of the outer peripheral surface 2 b of the rising portion 2 . At this time, the lower end 43e of the third return piece 43d is arranged at a position higher than the height H at which the lower end 33a of the first outer peripheral covering portion 33 shown in FIG. 1 was positioned, as shown in FIG. , part of the outer peripheral surface 2b of the rising portion 2 covered with the first outer peripheral covering portion 33 (range X) is exposed.

Next, as shown in FIG. 5, the decorative curtain plate material 5 is installed under the new coping 4 . The decorative curtain board 5 shown in FIGS. 5 and 6 is a member extending in the horizontal direction, and is formed by bending an aluminum board into an L-shaped cross section. The decorative curtain plate material 5 is composed of a curtain plate portion 51 covering the range X of the outer peripheral surface 2b and a return portion 52 extending from the lower end of the curtain plate portion 51 toward the rising portion 2 side. The curtain plate portion 51 has first screw holes 51a formed at both ends in the horizontal direction. It is almost the same as the distance. As shown in FIG. 7, the upper end of the curtain board 51 of the decorative curtain board 5 is brought into contact with the inner corner 43f formed by the second return piece 43b and the lower curtain board 43c of the new coping 4. , are attached by a double-faced tape preliminarily attached to the surface of the lower curtain plate portion 43c on the decorative curtain plate material 5 side. Then, it is fixed to the new top rail 4 by penetrating the curtain plate portion 51, the lower curtain plate portion 43c, and one extending portion 26b of the top rail base member 26 with the screw 6. At this time, since the distance L1 in the height direction of the curtain plate portion 51 described above is substantially the same as the length from the lower end of the second return piece 43b of the new coping 4 to the height H, the range X shown in FIG. is covered with the decorative curtain plate material 5 . Also, as shown in FIG. 10, a plurality of decorative curtain boards 5 are installed in the horizontal direction in the same manner as the newly installed coping 4, and their joint positions are aligned with the joint positions of the newly installed coping 4. As shown in FIG. By aligning the joint positions of the decorative curtain plate material 5 and the newly installed coping 4 in this way, the appearance of the building S can be given a sense of unity, and the design of the building appearance can be improved. Adjacent decorative curtain boards 5 are installed on the newly installed coping 4 with a gap of about 5 mm, like the newly installed coping 4 .

Subsequently, as shown in FIG. 8(a), the newly installed copings 4 adjacent to each other in the horizontal direction are connected by coping joint covers 7. Next, as shown in FIG. As shown in FIG. 8(b), the top rail joint cover 7 is a member formed by bending an aluminum plate material into a substantially U-shaped cross-section, and includes a long and narrow upper connecting portion 71 and a length of the upper connecting portion 71. It consists of a pair of side connecting portions 72 in which both edges in the width direction are bent downward, and a pair of hooking pieces 73 in which the lower ends of the pair of side connecting portions 72 are bent in a direction to approach each other. Further, the height distance L2 from the upper end of one of the side connecting portions 72 to the upper surface of the hooking piece 73 of the pair of side connecting portions 72 is substantially the same as that of the curtain plate portion 42a of the new coping 4 shown in FIG. , and the height distance L3 from the upper end of the other side connecting portion 72 to the upper surface of the other hooking piece 73 is substantially the same height as the upper curtain plate portion 43a of the newly installed coping 4 shown in FIG. It's becoming One hooking piece 73 of the pair of hooking pieces 73 is formed with a second screw hole 73a penetrating in the plate thickness direction at one end in the width direction. When connecting the newly installed copings 4 arranged at corners or internal corners, as shown in FIGS. A corner head joint cover 74 and a corner head joint cover 75 with formed corners are used.

When connecting the adjacent new copings 4 with the coping joint cover 7, first, as shown in FIG. Place 7. Then, as shown in FIG. 10(b), one hooking piece 73 is hooked to the first return piece 42b, and the other hooking piece 73 is hooked to the lower end of the upper curtain plate portion 43a, thereby 71 is brought into contact with the second upper covering portion 41 of the adjacent newly installed coping 4 . Finally, a screw 6 is driven through the second screw hole 73a to fix one of the hooking pieces 73 to the first return piece 42b of one of the new copings 4. As shown in FIG. In this way, by fixing the joint cover 7 to only one of the new copings 4, the newly coping 4 expands and contracts due to external factors such as temperature and humidity and interferes with the adjacent new coping 4, causing the coping joints to be damaged. It is possible to prevent the cover 7 from being damaged.

Next, as shown in FIG. 11( a ), the decorative curtain plates 5 adjacent to each other in the horizontal direction are connected by the curtain plate joint cover 8 . The curtain board joint cover 8 shown in FIG. and a horizontal portion 82 projecting horizontally from one end of the lengthwise direction. The fixing portion 81 has a double-faced tape 81a adhered to the surface on the horizontal portion 82 side, and a third screw hole 81b is formed at one end portion in the width direction. When connecting decorative curtain boards 5 arranged at corners or inside corners, as shown in FIGS. A corner panel joint cover 83 and a corner panel joint cover 84 are used.

When connecting the adjacent decorative curtain boards 5 with the curtain board joint cover 8, as shown in FIG. The joint cover 8 is arranged, and the double-faced tape 81a of the fixing portion 81 is adhered to the adjoining decorative curtain plate member 5. As shown in FIG. Then, as shown in FIG. 12, a screw 6 is driven through the third screw hole 81b to fix the fixing portion 81 to the curtain plate portion 51 of the decorative curtain plate member 5 on one side. In this way, by fixing the curtain plate joint cover 8 to only one of the decorative curtain plates 5, the decorative curtain plate 5 expands and contracts due to external factors such as temperature and humidity, just like the top rail joint cover 7. Interference with the matching decorative curtain plate material 5 and breakage of the curtain plate joint cover 8 can be prevented.

As described above, according to the method for replacing copings of the present application, when the lower end of the new coping 4 is higher than the lower end of the existing coping 3, the range X of the rising portion 2 is covered with the decorative curtain plate material 5. be. Therefore, even if the shape of the existing coping 3 and the shape of the new coping 4 are different, the part of the rising part 2 covered by the existing coping 3 is not exposed, and the design of the building appearance is maintained. be able to. In addition, if the finish of the portion of the outer peripheral surface 2b covered by the existing coping 3 is repaired to match the finish of the uncovered portion, or if a decorative trunk is installed under the existing coping 3, There is no need to reattach the decorative girth to match the lower end of the newly installed coping 4, and workability can also be improved.

Further, although the height distance L4 of the range X shown in FIG. 4 varies depending on the shape of the existing coping 3, the range X can be reliably covered by adjusting the height of the curtain board portion 51 of the decorative curtain board material 5. be able to. In other words, it is not necessary to mold the new coping 4 with a complicated shape to match the shape of the existing coping 3 each time. can be suppressed and the design around the parapet can be maintained.

The embodiments of the present invention are not limited to those described above, and can be modified as appropriate without departing from the spirit of the present invention.

The method for replacing the coping according to the present invention can be suitably used when the lower end of the new coping is higher than the lower end of the existing coping.

1 Parapet 2 Rising Part 2b (Rising Part) Outer Peripheral Side 3 Existing Coping 33 First Peripheral Covering Part 33a Lower End of First Peripheral Covering Part 4 New Coping 43 Second Outer Covering Part 43a Upper Curtain Plate Part 43b Second Return Piece ( return piece)
43c lower curtain plate portion 43e lower end of the third return piece (lower end of the second outer peripheral covering portion)
43f Inner corner 5 Decorative curtain board material 7 Coping joint cover 8 Curtain board joint cover H Height where the lower end of the existing coping was located X The lower end of the second outer covering part to the lower end of the first outer covering part were located range to height

Claims (5)

A method for replacing an existing coping installed on the upper part of the rising part of a parapet with a new coping, comprising:
a removing step of removing from the rising portion the existing coping having the first outer peripheral covering portion covering the upper end portion of the outer peripheral surface of the rising portion;
an installation step of installing the new coping having a second outer peripheral covering portion covering the upper end portion of the outer peripheral surface of the rising portion above the rising portion;
When the lower end of the second outer covering portion installed on the rising portion is positioned higher than the lower end position of the first outer covering portion before removal, the outer peripheral surface of the rising portion includes: and a covering step of covering the range from the lower end of the second outer circumference covering portion to the height where the lower end of the first outer circumference covering portion was positioned with a decorative curtain plate material. Method. The second outer peripheral covering portion includes an upper curtain plate portion that covers the upper end portion of the outer peripheral surface of the rising portion, a return piece that protrudes the lower end of the upper curtain plate portion in the direction of the rising portion, and the return a lower curtain plate portion extending downward from the edge on the rising portion side of the piece,
2. The coping according to claim 1, wherein in the covering step, the upper end of the decorative curtain board is brought into contact with an internal corner formed by the return piece and the lower curtain board. alternative construction method. 3. The method of replacing a top rail according to claim 1, wherein the covering step is to install the decorative curtain plate material having an L-shaped cross section. The installation step includes installing a plurality of the new coping in a horizontal direction,
In the covering step, a plurality of decorative curtain boards are installed in the horizontal direction,
The horizontally adjacent new top rails are connected by a top rail joint cover straddling each horizontal edge, and the horizontally adjacent decorative curtain board members are connected to each other by a curtain straddling each horizontal edge. Further comprising a connecting step of connecting by a plate joint cover,
4. The method for replacing a top rail according to any one of claims 1 to 3, wherein the connecting step aligns joint positions of the top rail joint cover and the curtain plate joint cover. . In the connecting step, the top rail joint cover is screw-fixed only to one of the adjacent new top rails, and the curtain plate joint cover is attached to one of the adjacent decorative curtain plate materials. 5. The method for replacing coping according to claim 4, wherein the coping is screwed only to the plate material.

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