JP2020176490A - Roof panel, roof structure, and roof structure construction method - Google Patents

Abstract

To provide a roof panel which can be easily constructed while holding a structural bearing force required for a roof, a structure using the roof panel, and a method for constructing the same.SOLUTION: A roof panel 3 has a first roofing board 31 and a plurality of first rafter materials 32 which are fixed in parallel with a lower surface 31a of the first roofing board 31 at intervals and project from at least one end edge 31b of the first roofing board 31, and is a panel fixed to an upper part of a plurality of horizontal backing materials 2 arranged in parallel with each other at intervals, in which a projection length of a first projection part 32a projecting from an end edge of the first roofing board 31 of the first rafter material 32 is equal to or larger than an interval L1 of the adjacent horizontal backing materials 2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a roof panel forming a roof slope, a roof structure using the roof panel, and a construction method thereof.

Conventionally, when forming a sloping roof, a roof panel in which a plate material to be a base material for a roof finishing material is fixed to a hanging timber erected on a horizontal base material such as a main building may be used (for example, Patent Document 1 and Patent Documents). 2). Since these roof panels are carried into the construction site in a state where the hanging timber and the plate material to be placed and fixed on it are integrated in advance at the factory, each member is lifted to the height of the roof and constructed individually. It is not necessary to do so, and workability can be improved.

JP-A-10-46737 JP-A-7-286394

By the way, in a wooden roof structure, the proof stress (horizontal proof stress) of the entire roof structure surface may be secured by combining the joint strength between the main building material and the hanging timber and the joining strength between the hanging timber and the field board. However, in the roof panels described in Patent Document 1 and Patent Document 2, adjacent roof panels are arranged on the horizontal base material in a state where the seams are matched in both the horizontal direction and the roof slope direction, so that the roof panel joints are joined. The position is a structural weakness, and there is a high possibility that the horizontal strength of the entire roof cannot be secured without installing reinforcements such as horizontal braces. Further, although the joint positions of the roof panels can be arranged in a staggered manner, there is a problem that the allocation of the roof panels becomes complicated and the construction time is required.

On the other hand, when forming a large sloped roof with a long length such as a large roof between beams or a one-sided roof, wooden hanging timbers that slope along the roof slope may be joined together, but the joint part of the hanging timber Since it is not possible to form a smooth roof surface unless it is connected accurately, high-precision construction is required. However, it is very difficult to accurately connect the slanted long hanging timbers, and the construction accuracy depends largely on the skill of the builder, so that the construction quality may differ depending on the construction site.

Therefore, the present invention has been made in view of the above-mentioned problems, and is a roof panel that can be easily constructed while maintaining the structural strength required for the roof, a structure using the roof panel, and its construction. The purpose is to provide a method.

The first roof panel of the present invention is fixed to the first field plate and the lower surface of the first field plate in parallel at intervals from each other, and at least a plurality of roof panels projecting from one end edge of the first field plate. A roof panel having a first hanging wood and fixed to the upper part of a plurality of horizontal base materials arranged in parallel with each other at intervals, and is an end of the first field plate of the first hanging wood. The protruding length of the first protruding portion protruding from the edge is characterized by being equal to or greater than the distance between the adjacent horizontal base materials.

The first roof structure of the present invention includes a plurality of horizontal base materials extending in the eaves girder direction and a first roof panel, which are arranged in parallel with each other at intervals, and the roof panel is the first. It is characterized in that the protruding portion is directed toward the water side and is fixed to the horizontal base material.

In the second roof structure of the present invention, one end plate is arranged so as to abut against one end edge of the first field plate, and the lower surface of the second field plate is spaced apart from each other. The receiving roof panel is provided with a receiving roof panel having a plurality of second hanging timbers fixed in parallel and at least one end thereof is arranged at one end edge of the second hanging timber, and the receiving roof panel is one end of the second hanging timber. It is characterized in that the portions are arranged between the first protruding portions adjacent to each other and fixed to the horizontal base material.

In the third roof structure of the present invention, one end plate is arranged so as to abut against the other end edge of the second field plate, and the lower surface of the third field plate is spaced apart from each other. The second roof panel comprises a second roof panel having a plurality of third hanging timbers fixed in parallel and having one end protruding from one end edge of the third field plate, and the second roof panel is the third. The second protruding portion of the hanging wood projecting from the edge of the third field plate is fixed to the horizontal base material on the uppermost water side toward the underwater side, and the receiving roof panel is other than the second hanging wood. The end portion is arranged between the second protruding portions adjacent to each other and fixed to the horizontal base material.

The first roof structure construction method of the present invention is a roof structure construction method using any of the second to fourth roof structures, and the first protruding portion of the first hanging wood is directed to the upper side of the water. The roof panel is fixed to the horizontal base material, one edge of the second field plate is abutted against one edge of the first field plate, and one end of the second hanging wood is brought into the first. It is characterized in that the receiving roof panel is fixed to the horizontal base material by arranging between the protruding portions, and the second field plate is fixed to the first protruding portion.

In the second roof structure construction method of the present invention, the second roof panel of the third hanging timber is directed to the underwater side, and the second roof panel is fixed to the horizontal base material on the most water, and then from above. Both end edges of the second field plate are butted against one end edge of the first field plate and one end edge of the third field plate, respectively, and one end of the second hanging wood is placed between the first protruding portions. The other end of the second hanging timber is arranged between the second protruding portions, the receiving roof panel is fixed to the horizontal base material, and the second field plate is arranged between the first. It is characterized in that it is fixed to the protruding portion and the second protruding portion.

According to the first roof panel of the present invention, one end of the first hanging timber protrudes from the edge of the first field plate to form the first protruding portion, so that the first protruding portion is directed in the direction of the roof slope. The roof panel is installed on top of the horizontal base material, and the field board of the composite panel that integrates the commonly used field board and hanging wood is abutted against one end edge of the first field board. If the roofing timber of the composite panel is arranged between the adjacent first hanging timbers and the composite panel is fixed to the horizontal base material, the space between the roofing timbers of each panel can be increased. Therefore, it is not necessary to join the ends of the hanging timber of each panel as in the conventional case, and the workability can be improved, and the structural strength of the joint portion of the hanging timber can be strengthened. In addition, since the seams of the field boards of each panel and the seams of the hanging timber do not match, structural weaknesses can be compensated and the structural strength required for the roof can be maintained. Since the protruding length of the first protruding portion is equal to or greater than the distance between the adjacent horizontal base materials, the roof panel can be stably installed on the upper part of the horizontal base material.

According to the first roof structure of the present invention, the roof panel is fixed to the horizontal base material of the roof with the first protruding portion facing the water side, so that the commonly used field board and hanging timber are integrated. The field board of the composite panel is abutted against one end edge of the first field board from the water side, and the hanging wood of the composite panel is placed between the adjacent first hanging woods to form the composite panel as a horizontal base material. If it is fixed to, the space between the hanging timbers of each panel can be made close. Therefore, it is not necessary to join the ends of the hanging timber of each panel as in the conventional case, and the workability can be improved, and the structural strength of the joint portion of the hanging timber can be strengthened. Since the seams of the field boards of each panel and the seams of the hanging wood do not match, structural weaknesses can be compensated for, and by maintaining the joint strength between the hanging wood and the field boards, the roof structure surface The required horizontal strength as a whole can be secured.

According to the second roof structure of the present invention, one edge of the second field board is arranged so as to abut against one edge of the first field board, and one end of the second hanging timber is adjacent to the first protrusion. Since the receiving roof panel is fixed to the horizontal base material by arranging between the portions, the distance between one end portion of the second hanging timber and the first protruding portion can be increased. Therefore, it is not necessary to join the ends of the hanging timber of each panel as in the conventional case, and the workability can be improved, and the structural strength of the joint portion of the hanging timber can be strengthened. Since the seams of the field boards of each panel and the seams of the hanging wood do not match, structural weaknesses can be compensated for, and by maintaining the joint strength between the hanging wood and the field boards, the roof structure surface The required horizontal strength as a whole can be secured.

According to the third roof structure of the present invention, one edge of the third field board is arranged so as to abut against the other edge of the second field board, and the other end of the second hanging timber is adjacent to the second. Since the receiving roof panel is fixed to the horizontal base material by arranging it between the protruding parts, it is necessary to join the ends of each hanging timber at the construction site by combining each roof panel even in the case of a large roof. There is no problem, and workability can be improved.

According to the first roof structure construction method of the present invention, after the roof panel is erected on the horizontal base material, one end of the second hanging timber is arranged between the adjacent first protruding parts exposed from the first field board. Therefore, it is not necessary to connect the ends of the first hanging timber and the second hanging timber at the construction site, and the workability can be improved.

According to the second roof structure construction method of the present invention, after the second roof panel is fixed to the horizontal base material on the uppermost water and the upper side of the water is positioned, the receiving roof panel is placed between the roof panel and the second roof panel. Since the roof structure can be constructed simply by dropping the roof from above, the workability can be improved. Further, since both ends of the second hanging timber are arranged between the first protruding portions and the second protruding portions exposed from the first field board and the third field board, respectively, the ends of the hanging timber at the construction site. It is not necessary to connect the parts, and workability can be improved.

The perspective view which shows the roof structure of 1st Embodiment. A perspective view showing a roof panel. A perspective view showing a roof panel with reinforced rafters. The perspective view which shows the receiving roof panel. A perspective view showing a situation in which a roof panel is erected on a horizontal base material. A perspective view showing a situation in which a receiving roof panel is erected on a horizontal base material. (A) A perspective view showing a situation in which the first hanging timber is fixed to the eaves girder, and (b) a perspective view showing a state in which the first hanging timber is fixed to the eaves girder. A perspective view showing a situation in which the second timber is installed in the purlin. The plan view which shows the roof structure of 1st Embodiment. A plan view showing a situation in which a plurality of roof panels and receiving roof panels are erected on a horizontal base material. The plan view which shows the roof structure which has a plurality of roof panels. The perspective view which shows the situation which the receiving roof panel is installed between the roof panel and the 2nd roof panel. The plan view which shows the roof structure of 2nd Embodiment.

<First Embodiment>
Hereinafter, an embodiment of the roof structure 1 according to the present invention will be described with reference to each figure. The roof structure 1 shown in FIG. 1 is a structure mainly used for a slanted roof having a wooden structure, and is arranged in parallel at intervals from each other, and has a plurality of horizontal base materials 2 extending in the eaves girder direction and a roof panel. 3 and a receiving roof panel 4 arranged on the water side of the roof panel 3 are provided.

As shown in FIG. 1, the horizontal base material 2 is arranged substantially parallel to each other at intervals while forming a height difference along the roof slope, and is supported by columns and hut bundles (not shown) and extends in the eaves girder direction. It is a plurality of long materials, and a roof panel 3 and a receiving roof panel 4 are placed on the upper part. In the illustrated example, the horizontal base material 2 is arranged parallel to the eaves girder 21 arranged on the lowermost side, the purlin 22 arranged on the uppermost side of the water, and between the eaves girder 21 and the purlin 22. It is composed of a plurality of purlins 23. The distance L1 between the horizontal base materials 2 is calculated by structural calculation in consideration of the shape of the roof, the climate of each region, the load acting on the roof, etc. For example, if it is between the purlin 23 and the purlin 23, the vertical distance is calculated. It can be about 1500 mm to about 2000 mm. The arrangement of the horizontal base material 2 in FIG. 1 is an example, and the type and shape of the horizontal base material 2 and the number of purlins 23 are not particularly limited.

As shown in FIGS. 1 and 5, a rafter stand 2a for receiving the first rafter 32 and the second rafter 42, which will be described later, is fixed to the upper surfaces of the eaves girder 21 and the ridge 22, respectively, and the rafter stand 2a A notch 2b having a substantially triangular cross-sectional view shown in FIG. 7A is formed in each of the rafters 32 and 42 in contact with each other. Further, as shown in FIGS. 5 and 8, on the underwater side surface of the purlin 23, a cross-section trapezoidal rafter hanging 23a whose upper surface is inclined according to the roof slope is fixed by a fixture A such as a screw or a nail. The rafters 32 and 42 can be placed stably.

The roof panel 3 is a composite panel in which the field board and the hanging wood are integrated in advance at the factory, and as shown in FIG. 2, the first field board 31 and the lower surface 31a of the first field board 31 are spaced apart from each other. It has a plurality of first hanging timbers 32, which are fixed in parallel with each other. The first field material 31 is made of structural plywood having a thickness of about 12 mm and is formed to have a width of about 2000 mm or less and a length of about 3000 mm to 4000 mm or less. By making such a size, a roof panel is formed at the time of construction. 3 can be lifted by a crane without any trouble and arranged at a predetermined position, and can be easily transported. The first hanging timber 32 is connected and fixed to the first field board 31 by a plurality of fixtures A driven from above the first field board 31, and one end thereof protrudes from one end edge 31b of the first field board 31. The protruding length L2 of the first protruding portion 32a, which is the protruding portion, is equal to or greater than the distance L1 between the adjacent horizontal base materials 2 as shown in FIG. Further, the other end 32b of the first hanging timber 32 is a portion that protrudes from the other edge 31c of the first field board 31 to form an eave, and is placed on the eaves girder 21 as shown in FIG. To. As shown in FIG. 7A, the side surface 32c of the other end 32b in contact with the eaves girder 21 is marked with a reference ink 32d in order to align the eaves, and the other end 32b is the first. The width of the 1 field board 31 is determined by the height of the eaves for each roof. The other end 32b of the first hanging timber 32 does not protrude from the other edge 31c of the first field board 31 unless the roof panel 3 is installed under the water.

As shown in FIG. 1, the roof panel 3 is fixed on the horizontal base material 2 with the first protruding portion 32a side of the first hanging timber 32 facing toward the water side, and the total length thereof is at least the distance between the horizontal base materials 2. It is desirable that there is 2 to 3 times or more of L1. When forming a roof with a large eaves as shown in FIG. 3, a reinforcing rafter 33 is installed adjacent to the other end 32b of the plurality of first rafters 32 excluding both ends. By doing so, the strength of the eaves can be reinforced. Although not shown, the reinforcing rafters 33 may be bridged to the purlin 23 adjacent to the purlin 21 in a state where the edge of one end is aligned with the edge of the other end 32b. It has a possible length.

It is desirable that the distance between the adjacent first hanging timbers 32 is 500 mm or less in accordance with the placement standard for the horizontal base material specified in "Allowable stress design of wooden frame construction method housing (2017 version)". Further, it is desirable that the intervals between the plurality of first hanging timbers 32 are equal in consideration of ease of allocation and workability, but if the intervals are 500 mm or less, the intervals do not necessarily have to be equal.

Like the roof panel 3, the receiving roof panel 4 is a composite panel in which the field board and the hanging timber are integrated in advance at the factory, and as shown in FIG. 4, the second field board 41 and the second field board 41 It has a plurality of second hanging timbers 42, which are fixed in parallel to the lower surface 41a at intervals. The second hanging timber 42 is connected and fixed to the second field plate 41 by a plurality of fixtures A driven from above the second field plate 41, and both ends thereof are one end edge 41b and the other of the second field plate 41, respectively. Unlike the roof panel 3, both ends 42a and 42b of the second hanging timber 42 do not protrude from the second field board 41. As shown in FIG. 1, the receiving roof panel 4 is a panel arranged so as to be overlapped on the upper portion of the first protruding portion 32a, and it is desirable that the total length is at least twice the interval L2 between the horizontal base materials 2. The configuration of the second field board 41 and the spacing between the second hanging timbers 42 are the same as the configuration of the first field material 31 and the spacing between the first hanging timbers 32, respectively.

Next, the construction method of the roof structure 1 will be described. First, as shown in FIG. 5, the roof panel 3 is erected on the horizontal base material 2 spanning the pillars and the shed bundles (not shown). The roof panel 3 is placed on the rafter stand 2a on the upper part of the eaves girder 21 and the rafter hanging 23a fixed to the purlin 23 with the first protruding portion 32a of the first rafter 32 facing the water side, and FIG. As shown in a), the other end 32b of the first rafter 32 is fitted into the notch 2b of the rafter stand 2a. Then, after aligning the reference ink 32d and the corner of the rafter stand 2a on the underwater side to align the protruding width from the eaves girder 21 of the other end 32b, as shown in FIG. 7B, the length is long from above. The other end 32b and the eaves girder 21 are integrally connected and fixed with a scale screw B. At this time, since the reference ink 32d is not concealed by the first field plate 31, the reference ink 32d can be easily aligned with the predetermined position of the eaves girder 21, and the workability can be improved. Further, as shown in FIG. 8, a long screw B is driven from above the first field board 31 into a portion of the first rafter 32 that abuts on the rafter hanging 23a, and the roof panel 3 is sequentially fixed to the horizontal base material 2. ..

Subsequently, as shown in FIGS. 1 and 6, the receiving roof panel 4 is placed on the rafter hanging 23a fixed to the purlin 23 located above the first field board 31 and the rafter stand 2a above the ridge 22. To do. At this time, one end portion 42a of the second hanging wood 42 is arranged between the adjacent first protruding portions 32a, and one end edge 41b of the second field plate 41 is one end edge of the first field plate 31. It is abutted against 31b. Then, the other end 42b of the second rafter 42 is fitted into the rafter 2a of the rafter 22 in the same procedure as the roof panel 3, and as shown in FIG. 9, a long screw B is used from above the second field board 41. The receiving roof panel 4 and the ridge 22 are integrally connected and fixed, and a long screw B is driven into the portion of the second rafter 42 that abuts on the rafter hanging 23a from above the second field plate 41 to drive the receiving roof panel. 4 is fixed to the horizontal base material 2.

As shown in FIG. 9, the roof panel 3 and the receiving roof panel 4 fixed on the horizontal base material 2 in this way are aligned with the second field plate 41 and the first protruding portion 32a of the first hanging timber 32. It is connected by driving a plurality of fixtures A from above at the positions to be used. Then, as shown in FIG. 10, the roof panel 3 and the receiving roof panel 4 are installed in the horizontal direction in the same procedure, and the eaves purlin 34 is fixed to the tip of the other end 32b of the first hanging timber 32 with screws. At the same time, the eaves front field plate 51 for the eaves is installed at the other end 32b of the first hanging timber 32 protruding from the eaves and above the eaves main building 34. Finally, the end field plate 52 is installed between the edge of the receiving roof panel 4 located at the end of the roof surface on the gable side and the edge of the horizontal base material 2 in the longitudinal direction. Complete the roof structure 1.

In this way, in the roof structure 1, by arranging the first hanging timber 32 and the second hanging timber 42 partially in a staggered manner, the intervals between the hanging timbers 32 and 42 of the panels 3 and 4 can be increased. .. Therefore, the structural strength of the joint portion of each of the hanging timbers 32 and 42 can be strengthened without joining the ends of the hanging timbers 32 and 42, and the workability can be significantly improved. In addition, since the seams of the field board and the hanging timber do not match, structural weaknesses can be compensated for, and a roof structure that can be easily constructed while maintaining the structural strength required for the roof can be constructed. .. Further, although only one roof panel 3 is used in the illustrated example, as shown in FIG. 11, the first field plates 31 of the plurality of roof panels 3 are butted against each other and spliced together, and the roof located on the uppermost side of the water. The receiving roof panel 4 may be fixed to the first protruding portion 32a of the panel 3, and the number of roof panels 3 can be adjusted according to the shape and size of the roof.

<Second Embodiment>
Next, an embodiment of the roof structure 6 according to the present invention will be described with reference to each figure. The configuration overlapping with the roof structure 1 will be described by using the same reference numerals. As shown in FIG. 12, the roof structure 6 includes a plurality of horizontal base materials 2, a roof panel 3, a receiving roof panel 4, and a second roof panel 7 arranged on the water side of the receiving roof panel 4. ing.

As shown in FIG. 12, the second roof panel 7, which is a composite panel in which the field board and the hanging timber are integrated, is arranged so that one end edge 71a abuts against the other edge 41c of the second field board 41. It has a third field board 71 to be formed, and a plurality of third hanging timbers 72 fixed in parallel to the lower surface of the third field board 71 at intervals. One end of the third hanging timber 72 protrudes from one end edge 71a of the third field plate 71, and the protruding length L3 of the second protruding portion 72a, which is the protruding portion, is adjacent as shown in FIG. The distance between the matching horizontal base materials 2 is L1 or more. The configuration of the third field board 71 and the spacing between the third hanging wood 72 are the same as those of the first field board 31 and the first hanging wood 32, respectively.

Next, a roof structure construction method using the roof structure 6 will be described. First, the roof panel 3 is fixed to the horizontal base material 2 in the same procedure as in the first embodiment. Then, as shown in FIG. 12, the other end portion 72b of the third rafter 72 is placed on the upper part of the purlin 22 with the second projecting portion 72a facing the water side, and the rafter stand 2a is cut out of the drawing. It is fitted into the notch 2c, and the third rafter 72 is placed on the rafter hanging 23a fixed to the purlin 23. Then, a long screw B (not shown) is driven from above to integrally connect and fix the other end 72b and the purlin 22, and the third field is in contact with the rafter hanging 23a of the third rafter 72. A long screw B (not shown) is driven from above the main plate 71 to sequentially fix the second roof panel 7 to the horizontal base material 2. At this time, the second roof panel 7 is installed on the horizontal base material 2 in a state where the third hanging timber 72 is substantially aligned with the position of the first hanging timber 32 in the eaves girder direction, and each field board 31, The shape of the 71 is adjusted so that the separation distance between the first field plate 31 and the third field plate 71 is substantially the same as the length of the second field plate 41.

Subsequently, as shown in FIG. 12, the receiving roof panel 4 is placed on the rafter hanging 23b fixed to the purlin 23 located between the first field board 31 and the third field board 71. At this time, in the second hanging timber 42, one end 42a is arranged between the first protruding portions 32a of the first hanging timber 32, and the other end 42b is placed between the first protruding portions 32a of the first hanging timber 32. Arranged between them, both ends 41b and 41c of the second field plate 41 are abutted against one end edge 31b of the first field plate 31 and one end edge 71a of the third field plate 72, respectively. Then, similarly to the second roof panel 7, a long screw B (not shown) is driven from above into the portion of the second rafter 42 that abuts on the rafter hanging 23a to fix the receiving roof panel 4 to the horizontal base material 2. ..

As shown in FIG. 13, the receiving roof panel 4 arranged on the horizontal base material 2 in this way is positioned from above at a position consistent with the first protruding portion 32a and the second protruding portion 72a of the second field plate 41. It is connected by driving the fixture A. Then, the eaves front field plate 51, the eaves main building 34, and the end field base plate 52 are installed in the same procedure as the roof structure 1, and the roof structure 6 is completed.

In this way, in the roof structure 6, it is necessary to partially stagger the hanging timbers 32, 42, and 72 so that the ends of the hanging timbers are complicatedly processed to join the hanging timbers as in the conventional case. Since there is no roof, workability can be greatly improved even with a long roof. In addition, since the seams of the field board and the hanging timber do not match, structural weaknesses can be compensated for, and a roof structure that can be easily constructed while maintaining the structural strength required for the roof can be constructed. .. Then, since the receiving panel 4 is dropped from above after positioning the bottom and top of the water by the roof panel 3 and the second roof panel 7, it is possible to prevent the panels around the eaves and the ridge from shifting.

The embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

The roof panel according to the present invention can be suitably used when forming a sloped roof having a wooden structure.

1, 6 Roof structure 2 Horizontal base material 3 Roof panel 31 1st field board 31b One edge of 1st field board 32 1st hanging wood 32a 1st protruding part 4 Receiving roof panel 41 2nd field board 41b 2nd field One edge of the main plate 41c The other edge of the second field plate 42 Second hanging wood 42a One end of the second hanging wood 42b The other end of the second hanging wood 7 Second roof panel 71 Third field plate 71a No. 3 One end edge of the field board 72 Third hanging wood 72a Second protruding part L1 Spacing between adjacent horizontal base materials L2 Protruding length of the first protruding part L3 Protruding length of the second protruding part

Claims (6)

It has a first field board and a plurality of first hanging timbers fixed in parallel to the lower surface of the first field board at intervals from each other and projecting from at least one end edge of the first field board. A roof panel that is fixed to the top of multiple horizontal base materials that are spaced parallel to each other.
A roof panel characterized in that the protruding length of the first protruding portion of the first hanging timber protruding from the edge of the first field plate is equal to or greater than the distance between adjacent horizontal base materials. Multiple horizontal base materials that are placed parallel to each other and extend in the direction of the eaves girder,
The roof panel according to claim 1 is provided.
The roof panel has a roof structure in which the first protruding portion is directed toward the water side and is fixed to the horizontal base material. One edge is fixed in parallel to the second field plate, which is arranged so as to abut against one edge of the first field plate, and the lower surface of the second field plate at intervals, and at least one end thereof is said. It has a receiving roof panel with a plurality of second hanging timbers arranged on one edge of the second field board.
The roof structure according to claim 2, wherein the receiving roof panel is fixed to the horizontal base material by arranging one end of the second hanging timber between the adjacent first protruding portions. .. One end edge is fixed in parallel to the lower surface of the third field plate and the third field plate, which is arranged so as to abut against the other edge of the second field plate, and one end thereof is fixed to the lower surface of the third field plate. (3) A second roof panel having a plurality of third hanging timbers protruding from one end edge of the field board, and
The second roof panel is fixed to the horizontal base material on the uppermost side of the water with the second protruding portion protruding from the edge of the third field plate of the third hanging timber facing the water side.
The roof according to claim 3, wherein the receiving roof panel is fixed to the horizontal base material by arranging the other end of the second hanging timber between the adjacent second protruding portions. Construction. A roof structure construction method using the roof structure according to any one of claims 2 to 4.
The roof panel is fixed to the horizontal base material with the first protruding portion of the first hanging timber facing upward on the water.
From above, one end edge of the second field plate is abutted against one end edge of the first field plate, and one end of the second hanging wood is arranged between the first projecting portions. The receiving roof panel is fixed to the horizontal base material,
A roof structure construction method characterized in that the second field plate is fixed to the first protrusion. After fixing the second roof panel to the horizontal base material on the most water, with the second protruding portion of the third hanging timber facing the water side,
From above, both ends of the second field plate are abutted against one edge of the first field plate and one edge of the third field plate, respectively.
One end of the second hanging timber is arranged between the first protruding portions, and the other end of the second hanging timber is arranged between the second protruding portions so that the receiving roof panel is placed between the horizontal bases. Fixed to the material,
The roof structure construction method according to claim 5, wherein the second field plate is fixed to the first protruding portion and the second protruding portion.

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