JPS62242040A - Transverse shingling roof panel and roof structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to horizontal roofing panels and horizontal roofing structures made of metal steel sheets, and more specifically, the rust-preventing baking is performed using a predetermined width coated with a coating or the like. A horizontally ruled S roof board, in which nine eave side molding parts with a predetermined cross-sectional shape for mutual engagement were formed on both ends of a long metal steel sheet, and this horizontally covered roof board. It is on a roof assembly with a downward slope from the ridge side to the eave side, and the ridge side molding part of the next roof plate is engaged and connected to the eave side molding part of the previous roof plate, resulting in a horizontal roof. This relates to the improvement of the horizontal roof structure that constitutes the.

[Conventional technology]

BACKGROUND ART Conventionally, many different types and configurations of roof structures using horizontal roof plates made of long metal steel plates have been proposed.

Here, this type of general horizontal roof structure is shown in Figures 4 to 6. That is, Figure 4 is a cross-sectional perspective view showing a conventional horizontal roof plate, and Figure 5 is the same. FIG. 6 is a cross-sectional view showing a roof structure roofed using horizontal roofing boards, and FIG. 6 is an enlarged cross-sectional view of the engaging connection portion of the same.

In the conventional examples shown in FIGS. 4 to 6, the horizontal roofing board (1) is made of a long metal steel plate of a predetermined width and a predetermined unit length, which has been painted for rust prevention. A steel plate is formed by roll forming, etc., leaving a face plate part (2) in the center along the longitudinal direction, and forming an eave side part (3) on the -side side thereof.
The ridge side molded portion (4) is continuously formed on the other side.

Therefore, the eave side molded part (3) has a - of the face plate part (2).
From the side, bend the crown part (5) slightly diagonally outward and downward to a predetermined length, and then bend the front edge part (6) downward from the tip.
) is made to fall, and its lower end edge (7) is bent inward to form an engagement piece part (8) that is gently curved upward, and its end edge is formed into an edge bending part (9). The ridge side molded part (0) is provided with an abutting part (10) so as to be able to abut the edge bent part (9) from the other side of the face plate part (2). This is folded back to form a rising part (11) that stands diagonally upward on the inside.In this conventional example, from the ridge side that makes up the roof of the building to the eave side. The rafters, roof boards, etc. with a downward slope are installed on the part (12), and first, the horizontally ruled roof board (1) as the front side (eaves side) is installed as appropriate using hangers (not shown), etc. , and then attach the molded part (4) on the ridge side of the horizontally ruled roof board (1) on the previous tier side to the next tier side (ridge side).
The eave side molded part (3) of the horizontally ruled roof board (1) is fitted, and the tip edge bent part (8) of the engaging piece part (8) is attached to the eave-side molded part (10). Abutment and engagement connection are made within the
This roofing and maintenance assembly is repeated sequentially from the single house side to the ridge side to construct the desired horizontally ruled roof structure.

[Problem that the invention seeks to solve]

However, in the case of the conventional horizontal roof structure configured in this manner, there are various problems as described below.

That is, first, regarding the influence of wind and rain pressure on the engagement connection part, the front ridge side molded part (4) and the next tier eave side molded part (3)
The engagement joint edge (13) with the front edge (8) is attached to the face plate (2).
) is located at the position where the bottom edge (7) of Naturally, the wind and rain blowing up along the slope of the roof concentrates on the area near the engaging joint edge (13) exposed at the corner of this internal corner, and directly blows onto this area. At the same time, the wind and rain that hit it flow laterally along the engaging joint edge (13) and the leading edge (6).
It bounces upward along the direction and scatters.

Therefore, in this case, as shown in FIG. 6, the wind and rain pressure (1
4), wind and rain pressure (15) that jumps upward, and a composite pressure (16) that is the sum of both of these wind and rain pressures. In this case, on the one hand, the wind and rain pressure (10) will cause water penetration from the engaging joint edge (13) into the interior of the structure due to capillary action, and on the other hand, the wind and rain pressure pressure (15) and combined pressure (18
) causes the front edge (8) to float upward, and the engaging joint edge (13) is pushed open, resulting in flooding for a calendar year, and most of the time, strong winds and rain can cause flooding. Since sand, mud, and other dust are usually involved, these impurities enter the structure and accumulate, causing rust and corrosion due to electrolytic corrosion, and once they have entered the structure, Unlike simple rainwater components, they are not easily removed, and especially in cold regions, infiltrated rainwater is retained in these impurities, and as the temperature drops, this freezes and expands, causing it to not reach the desired level. There is a habit of inhibiting the engagement mode.

In addition, the eave side molded part (3
), the top of the head (5) at the top of the front end is bent diagonally outward and downward to form the front edge (8). ! As a result, the rising height from the face plate part (2) and the level difference at the connection part are relatively low. Due to poor snow removal, the degree of snow removal has decreased, and the reaction force (1 day) of the snow load (17) on the face plate (2) pushes the engaging joint edge (13) in the same way as above. The electricity applied in the opening direction and flowing along the roof surface causes water to flow in from this engaging joint edge (13) and cause freezing. The appearance of the surface is made into a flattened shape with relatively little change, making its design value inferior.

Furthermore, depending on the cross-sectional shape of the horizontally ruled roof board (1),
When this is installed on a roof structure, a space (19) is inevitably formed between the face plate part (2) and the roof assembly part (12), so that gusts of wind 1 Strong winds perturbed the horizontal roof board (1) itself.

In other words, it causes patter, or the sound of raindrops hitting during rain, and these impact sounds can be heard in the space (
19), the noise was further amplified.

This invention was made in order to improve all of these various conventional problems at once, and its purpose is to improve the molded part on the front ridge side and the next eave side of horizontal roofing sheets. This type of horizontal roof board eliminates the effects of wind, rain, snow accumulation, etc. on the engagement connection part with the molded part and the horizontal roof structure itself, and also has a good appearance and a simple structure. and to provide a horizontal roof structure.

[Means for solving problems]

In order to achieve the above object, the horizontal roof plate and horizontal roof structure according to the present invention have a face plate part in the longitudinal center of a long metal steel plate, and two eave side structures on both sides of this face plate part. Using a horizontal roof board in which sections are formed on each side, the ridge side forming section on the next step is engaged and connected to the eave side forming section on the previous step, with a downward slope of 4 from the ridge side to the eaves side. The eave-side molded part has an upper front edge part that falls downward on one side of the face plate part, and a contact part whose lower end edge is bent inward. A pressure piece part and an engagement piece part extending further inward are formed respectively, and the ridge side molded part has a single part.
The other side of the face plate part stands upwardly, and the lower front edge part is provided with an abutment edge that presses the lower surface of the horizontal pressure piece part at the upper end, and the upper end is bent outward from the abutment edge. a holding portion that extends further outward and is folded upward and inward to engage and hold the engagement piece portion, and a rising portion of the attached portion having an end portion of the holding portion raised up. The molded part on the next eave side is fitted onto the molded part on the front ridge side, so that the engaging piece part is engaged with and held by the holding part, and the abutting edge is brought into contact with the lower surface of the contact pressure piece. This is a horizontally ruled S roof board characterized in that the upper front edge can be projected forward of the lower front edge by applying contact pressure. A backup board as a roof base material, pressing the ridge-side end of the backup board, pressing to place the eave-side end, and a mounting step;
and a suspender member having an engaging part that engages and supports the rising part, and a horizontally ruled roof board on the front side is arranged on the backup board on the front side, and the suspender member is pressed and placed. The ridge side end of the front backup board is pressed by the tiered part, and the attachment part engages and supports the rising part of the front ridge side molded part to be attached. The eaves side end of the side backup plate is pressed, and the next stage eave side molded part is fitted onto the front ridge side molded part, so that the engaging piece part is engaged and held by the holding part, and the contact pressure piece This horizontal roof structure is characterized in that the upper front edge can be projected forward of the lower front edge by applying contact pressure of the abutting edge to the lower surface.

[For production]

That is, in this invention, in a horizontal roof board and a horizontal roof structure, the upper end abutting edge of the lower front edge of the ridge side molding part is connected to the upper front edge part of the eave side molding part by bending it. The pressure part can be brought into contact with the pressure part, and the engagement joint edges of these two parts can be set at a position rising from the face plate part and at the back of the upper front edge protruding forward, so that the engagement Concentration of wind and rain on the edge can be avoided, and the upper front edge can be projected forward in an overhanging state, which can prevent snow from falling, sliding snow, improving snow melting action, and preventing melted snow water from freezing. In addition, the appearance is improved, and by pressing the upper end abutment edge against the bottom surface of the contact pressure piece, it is possible to easily absorb length dimensional errors at each engagement part, and furthermore, the back-up plate Laying and
By attaching the roof plate with the suspension member and holding the backup plate together, it is possible to increase the resistance to load and the strength of the entire structure, maintain solid installation, and avoid affecting the engagement joint edges. It becomes.

[Embodiment] Hereinafter, an embodiment of the horizontal Ilf, g roof plate and horizontal roof structure according to the present invention will be described in detail with reference to FIGS. 1 to 13.

Fig. 1 is a cross-sectional perspective view showing a horizontally-roofed roof board according to this embodiment, Fig. 2 is a cross-sectional perspective view showing a horizontally-thatched roof structure constructed using the same horizontally ruled roof boards, and Fig. 3 is a cross-sectional perspective view showing a horizontally-thatched roof structure constructed using the same horizontally ruled roof board as above. FIG. 3 is an enlarged cross-sectional view of a joint portion.

In the embodiment configurations shown in FIGS. 1 to 3, the horizontal roofing board (21) is coated with a predetermined width and a predetermined width, for example, with anti-corrosion baking, as in the case of the conventional configuration. A long metal steel plate of unit length is used, and this metal steel plate is roll-formed to form a face plate part (2
2), leave the eave side molding part (23) on the - side side,
Further, a ridge side molded portion (24) is continuously molded on the other side.

Therefore, the eave side molded part (23) has the face plate part (
22) is bent downward by a predetermined length to make the upper front edge (25) fall, and the lower edge (26) is bent inward or diagonally upward at an acute angle. Bend the contact pressure piece (27)
In addition, there is a short rising step (28) further upward.
and extends inward to form an engagement piece (29),
And the end of this engagement piece (29) is bent downward (
30).

The ridge side molded part (24) also includes the face plate part (22).
The other side is bent upward by a predetermined length to stand up a lower front edge (31) corresponding to the upper front edge (25),
The upper end abutting edge (32) is the contact pressure piece (32).
The upper end abutment edge (32) that is brought into contact with the upper end (32) is bent outward and diagonally downward at an acute angle to form an extension (33), and further upwardly via a short rising step (34). Then, it extends outward and is folded upward and inward to form a holding part (35) capable of engaging and holding the engagement piece part (29) including the bent edge part (30), and this holding part (35). The end of the part (35) has a downwardly bent part (37) at the tip,
The mounting portion slightly curved inward is formed on the rising portion (36), and in this embodiment, the mounting portion is formed on the back surface extending from the face plate portion (22) to each portion of this ridge side molded portion (24). Then, a heat-insulating and sound-insulating material layer (38) made of foam material or the like is attached using an adhesive or the like.

Further, in the horizontal roof structure according to this embodiment, a back-up board such as a wood wool board shaped into predetermined vertical, horizontal, and thickness dimensions is used as a roof base material for the horizontal roof board (21). (41) and.

Through this backup board (41), the horizontal roof board (
21) to the roof assembly.
3), and the backup plate (41
), a felt sheet (42) with a portion (42a) protruding is pasted on one edge, in this case, the edge corresponding to the eave side, and the above-mentioned hanger member (43 ), the mounting is on the board part (44), and this mounting is on the board part (44).
4) and install the front side backup plate (4) in the middle part.
1) and press and hold the next stage side backup plate (41).
Pressure to place and hold the mounting part (4B) is used for mounting via a rising part (45a) and an engaging rising part extended corresponding to the height position of the holding part (35). (45b)
and a locking portion (47) connected to the locking rising portion (45b) and having a locking piece portion (48) formed at its tip portion to lock the edge bending portion (37). It is.

Therefore, in order to assemble the horizontal roofing board (21) according to the embodiment described above by raising it up and engaging with the roof structure, as in the case of the conventional example, it is necessary to start from the ridge side constituting the roof assembly. Installation of rafters, field boards, etc. with a downward slope toward the eaves is done using section (5).
1) First, install the front backup board (4) on the eave side.
After boiling 1), add this front side backup plate (41
), the horizontal roofing board (21) of the first stage on the first eave side is attached, and then the hanging member (43) to which the board part (40 is properly fixed) is attached to the part (51). By pressing the hanger member (43) and placing step part (4B), the ridge side end (41b) of the former back-up board (41) which is being cooked is pressed and attached. Kimibu (4
The edge bending part (37) of the ridge side molding part (24) of the front side horizontally ruled roof board (21) which is attached is fixed by the fastening piece part (48) at the tip of 7).

In other words, by this operation, the integrated installation of the backup board (41) and the horizontal roof board (21) on the front stage side can be maintained, and the installation is maintained in this way. , on the front surface felt sheet (42) of the backup board (41) on the front side, the back side heat and sound insulation material layer (38) of the horizontally ruled roof board (21) on the front side.
) are well pressed together.

Subsequently, the above-mentioned installation is carried out by pressing the hanger member (43) in the held state, and placing the next stage backup plate (on the ridge side) on the mounting step (4B).
Hook the eave side end (41a) of 41) and lay it down, but at this time, remove the surface felt sheet of the backup board (41).
The protruding eave side edge portion (42a) of (42) is inserted from the locking portion (47) of the hanger member (43) to the locking piece portion (48) side, and in this state, the above-mentioned mounting The ridge side molding part (20) of the previous side horizontally ruled roof board (21) which is being held is fitted with the eave side molding part (23) of the next stage horizontally ruled S roof board (21) on the ridge side. Holding part (
35), and then insert and engage the engaging piece (29) including the edge bent part (30) into the ridge side molded part (24) of this next horizontally ruled roof board (21) in the same manner as above. ) is attached and held by the following suspender member (43).

In other words, by this operation, the integrated installation of the backup board (41) and the horizontal roof board (21) on the next stage side can be maintained.
When the installation is maintained in this way, the molded part on the ridge side (2
4), the engagement piece (29) is inserted into and engaged with the holding part (35). Because of the fine and dense rising steps (28) and (34), the internal pressure reduction space (48) allows for good holding, and an effective and firm engagement connection is achieved. At the same time, the ridge side molding part (2
The upper end of the lower front edge part (31) raised from the face plate part (22) of 0 hits! (32) is strongly pressed by line contact with the lower surface of the contact pressure piece (27) of the upper front edge (25) that is lowered from the face plate (22) of the eave side molded part (23). It forms an engaging joint edge (50), is located in front of the lower front edge (31), and is connected to the front half of the contact pressure piece (27), and thus to the upper front edge (
25) protrudes like an overhang.

A space (51) is formed on the front nine-sided plate (22) of the lower front edge (31), and as you can see, the back-up plate (four surface felt sheets (42)) on the next stage side The back heat and sound insulation material layer (38) of the horizontally scored roof board (21) on the next stage side is tightly pressed onto the top and the protruding portion (42a) of the 7-elt sheet on the hanger member (43). be done.

Then, the desired horizontal roof structure can be constructed by sequentially repeating the engagement and connection by each of the above operations from the eave side to the ridge side.

Therefore, in the case of the configuration of the embodiment described above, the following actions and effects can be obtained.

In other words, the front ridge side molding part (
20 and the next stage eave side molding part (23) are mutually engaging and connected.

And in the horizontal roof structure obtained by this bonding connection,
Unlike the conventional structure, the engaging joint edges (50) between each part do not exist at the corners touching the face plate part (22),
The upper end abutting edge (32) of the lower front edge (31) rising from the corner of the inner corner and the contact pressure piece (27) of the upper front edge (25)
) exists in the lower surface pressure part and is in strong line contact, and a depressurized space (48) is formed inside the engagement, so wind and rain blown up along the face plate part (22) The influence of the spray is not directly applied to the joining edge (50), and the influence of this is sufficiently alleviated, and rainwater infiltrates and sand accompanying wind and rain from the engaging joining edge (50).

Can effectively and effectively prevent mud and other dust from entering,
Furthermore, even if some rainwater infiltrates due to capillary phenomenon, it will only seep in with almost no pressure, and there will be no effective engagement contact pressure at this engagement joint edge (50). Together with this, there is a very low possibility that the air will invade even if the air in the decompressed space (48) is removed.

Further, the upper end abutment edge (3) that becomes the engagement joint edge (50) is provided.
Since 2) is the contact pressure on the lower surface of the contact pressure piece (27), precise dimensional accuracy is not necessarily required, and as a result,
The contact pressure piece part (27), the engagement piece part (29), and the extension part (3
3) Errors in length between the holding part (35) and the holding part (35) can be easily absorbed.

Further, the upper front edge (25) is directly lowered from the edge of the face plate (22) and overhangs the lower front edge (31) that is raised directly from the edge of the face plate (22). This makes the connection step relatively large, and the front of the lower front edge (31).

Since the space (52) is formed on the face plate (22), on the one hand, as shown in Fig. 3, snow accumulation (53) on the roof is caused by the large step and space (52). In addition, it improves snow cutting and enhances the snow sliding effect, and also improves the space (52).
The snow cave formed in the snow can promote the snow melting action and prevent the melted snow water from freezing. Also, even if the face plate (22) is slightly bent downward due to the load of the snow (53), it will naturally Since the fulcrum of the deflection is the contact pressure point of the upper end abutting edge (32) on the lower surface of the contact pressure piece (27), this contact pressure point, in other words, the engagement joint edge (50) is pushed open. On the other hand, the relatively large step and the upper front edge (
The roof surface, which tends to have a flat and ordinary exterior shape due to the overhanging protrusion of the upper front edge (25), is replaced by the conspicuously raised line of the upper front edge (25) and the concave lower front edge (33). ) The shading of this type of horizontal roof gives a strong impression of its appearance, and the softness of this type of horizontal roof.
・The design value can be dramatically improved due to the image.

Also, from the face plate part (22) of the horizontal roof board (21) to the ridge side molded part (24), there is a heat-insulating and sound-insulating material layer (38) affixed to the back side thereof, and a surface felt of the backup board (41). (42) is joined with the reinforcement support of the horizontal roof plate (21) by the backup plate (41), so that it can sufficiently absorb the load on the face plate part (22) and prevent its flapping. It is possible to satisfactorily prevent this, and to soften the sound of raindrops colliding with the same-plane plate portion (22).
Furthermore, the felt sheet (42) that extends above the hanger member (43) removes condensed water on the back side of the face plate (22) that tends to occur when there is a difference between the inside and outside temperatures. 41), it can be discharged to the engaging connection part side without seeping into.

Furthermore, regarding the hanger member (43), the ridge side molded part (20) in the connected and engaged state is firmly engaged and held, and the previous stage that is defeated due to the presence of the pressing and placing stage part (48) The ridge side end (41b) of the side backup board (41),
Furthermore, the backup board (41) itself is firmly pressed down, and the eave side end (41a) of the next-stage backup board (41), and even the backup board (41) itself, are skillfully placed and held, and the horizontal roof board (41) is placed and held. 21) and can be integrally bonded.

〔Effect of the invention〕

As described in detail above, according to the present invention, a face plate part is formed in the longitudinal center of the long metal steel plate, and eave side one ridge side structural parts are formed on both sides of this face plate part, and the front side eaves are formed. In a horizontal roof plate in which a side molding part is engaged with a ridge molding part on the next stage to form a horizontal roof, and in a horizontal roof structure using this horizontally ruled S roof board, The upper end abutment edge of the lower front edge is brought into contact with the contact pressure part made by bending the upper front edge of the eave side molding part, and the engaging joint edge of these two parts is raised from the first plate part. Because it is exposed at the deep part of the upper front edge that protrudes forward, it is easy to avoid wind and rain concentrating on this abutment part, and the engagement joint It can effectively prevent rainwater from entering from the edges and sand, mud, and other dust caused by wind and rain, and the overhang on the lower front edge prevents snow from cutting and sliding during snowfall. , it can improve the snow melting effect and also help prevent the snow melting water from freezing. Also, since the upper end abutting edge is in contact with the F surface of the contact pressure piece, the contact pressure piece, the engagement piece, and the extension In addition, the upper end abutting edge acts as a fulcrum against loads such as snow accumulation, increasing the opposing force and reducing the engagement joint edge. This makes it possible to avoid the impact on the parts, and can also increase the design value.

By attaching a heat-insulating and sound-insulating material layer to the back side from the face plate to the ridge side molding, in combination with the backup plate, it strengthens the horizontal roof plate itself, prevents it from flapping, and prevents raindrops. Collision noise can be softened, and the pressing of the hanger members and the mounting steps can maintain the firm attachment of the backup board itself, and can also form a close and integrated connection with the horizontal roofing board. The structure of the joining part and the mounting and supporting parts are relatively simple, and has excellent features such as ease of roofing work.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional perspective view showing a horizontally-roofed roof board according to an embodiment of the horizontally-stitched roof structure according to the present invention, and FIG. 2 is a cross-sectional perspective view showing a roof structure roofed using the same horizontally ruled roof board as above. ,
FIG. 3 is an enlarged cross-sectional view of the engaging connection portion of the same as above;
Further, Fig. 4 is a cross-sectional perspective view showing a conventional horizontally-stitched roof board, Fig. 5 is a cross-sectional view showing a roof structure roofed using the horizontally ruled roof board as above, and Fig. 6 is an engaging connection section as above. FIG. 2 is an enlarged cross-sectional view. (21)...Horizontal roof board, (22)...Face plate part. (23)... Eave side molding part, (25)... Upper front edge, (28)... Lower edge of upper front edge, (27
)... Pressure piece part, (2 days)... Rising step part, (
23)... Retaining piece part, (30)... Edge bending part. (20... Ridge side molding part, (31)... Lower front edge, (32)... Upper end abutting edge, (33)...
... Extension part, (30... Rising step part, (35)
...Holding part, (3G)...The object to be installed is the rising part, (
37)...Edge bending part, (3 days)...Heat and sound insulation material layer. (41)...Backup board, (41a)...
...Eave side end of the backup board, (41b)...ridge side end of the backup board, (42)...Felt sheet, (a2a)...Eave side protrusion of the felt sheet. (43)...Hanger member, (44)...Mounted on the base plate, (45a) and (45b)...Mounted on the rising part and engagement rising part, (46)...・Press, mounting stage part, (47)...Locking part, (48)...Locking piece part. (48)... Decompression space, (50)... Engaging joint edge, (52)... Front space.

Claims (11)

[Claims] (1) A horizontal roof plate is used in which a face plate part is formed in the longitudinal center of a long metal steel plate, and eave side and ridge side structural parts are formed on both sides of this face plate part, respectively, from the ridge side to the eave side. A horizontal roof structure configured by engaging and connecting an eave side molding part on the previous stage with a ridge side molding part on the next stage with a downward slope, the eave side molding part having a face plate. forming an upper front edge part with one side of the part hanging downward, a contact pressure piece part with the lower edge thereof bent inwardly, and an engagement piece part extending further inwardly, Further, the ridge-side molded portion includes a lower front edge portion, the other side of the face plate portion rising upward, and an abutment edge provided at the upper end to press the lower surface of the contact pressure piece portion; an extension portion bent outward from the upper end abutting edge; a holding portion extending further outward and folded upward and inward to engage and hold the engagement piece portion; and an end portion of the holding portion raised up. and a rising part to be attached is formed respectively, and the next stage eave side molded part is fitted into the front ridge side molded part, and the engagement piece part is engaged with and held by the holding part, and the contact pressure piece part 1. A side-roofing roof board characterized in that an upper front edge portion can be projected forward of the lower front edge portion by abutting contact pressure of an abutting edge against a lower surface. (2) The horizontal roof board according to claim 1, wherein a heat-insulating and sound-insulating material layer is adhered to the back surface extending from the face plate portion to the ridge side molding portion. (3) An upwardly rising stepped portion is interposed between the contact pressure piece portion and the engagement piece portion, and between the extension portion and the holding portion, respectively. Horizontal roof shingles. (4) An upwardly rising step is interposed between the contact pressure piece and the engagement piece, and a bent edge portion is formed at the end of the engagement piece. Horizontal roofing board as described in paragraph 2. (5) A horizontal roof plate is used in which a face plate part is formed in the longitudinal center of a long metal steel plate, and eave side and ridge side structural parts are formed on both sides of this face plate part, respectively, from the ridge side to the eave side. A horizontal roof structure configured by engaging and connecting an eave side molding part on the previous stage with a ridge side molding part on the next stage with a downward slope, the eave side molding part having a face plate. forming an upper front edge part with one side of the part hanging downward, a contact pressure piece part with the lower edge thereof bent inwardly, and an engagement piece part extending further inwardly, Further, the ridge-side molded portion includes a lower front edge portion, the other side of the face plate portion rising upward, and an abutment edge provided at the upper end to press the lower surface of the contact pressure piece portion; an extension portion bent outward from the upper end abutting edge; a holding portion extending further outward and folded upward and inward to engage and hold the engagement piece portion; and an end portion of the holding portion raised up. Furthermore, a back-up board as a roof base material and the ridge-side end of the back-up board are pressed, the eave-side end is placed, a mounting stepped part, and the back-up board are pressed. A hanger member having a locking part that locks and supports the mounting rising part is provided, and a front-side horizontal roof board is arranged on the front-side backup board, and the press of the hanger member and the mounting step part cause the front stage to be fixed. The ridge side end of the side backup board is pressed, and the mounting part of the front ridge side molding part is engaged and supported by the engaging part, and the mounting step part is pressed against the eave side of the next stage side backup board. The end portion is pressed, and the next eave side molded portion is fitted onto the front ridge side molded portion, so that the engaging piece is engaged and held by the holding portion, and abutted against the lower surface of the contact pressure piece. A horizontal roof structure characterized in that an upper front edge portion can be projected in front of the lower front edge portion by applying contact pressure of the edges. (6) Claim 5: A heat-insulating and sound-insulating material layer is attached to the back side of the horizontal roofing plate from the face plate to the ridge side molding.
Horizontal roof structure described in section. (7) An upwardly rising step is interposed between the contact pressure piece part and the engagement piece part, and the extension part and the holding part of the horizontal roof board, respectively. Horizontal roof structure described in Section 6. (8) An upwardly rising step is interposed between the contact pressure piece and the engagement piece, and a bent edge portion is formed at the end of the engagement piece. Horizontal roof structure as described in Section 6. (9) The horizontal roof structure according to claim 5 or 6, wherein a felt sheet is adhered to the surface of the backup board. (10) The horizontal roof structure according to claim 5 or 6, wherein a felt sheet is adhered to the surface of the backup board, and a portion of the felt sheet protrudes from the eave side end. (11) A bent edge portion is formed at the end of the attached rising portion of the ridge side molded portion, so that the end portion of the hooking portion of the hanger member can be hooked thereto. Horizontal roof structure according to item 5 or 6.