An antique building roof assembly type installation gutter structure and construction method

Abstract

The application discloses a kind of eaves gutter structures of assembly type installation of antique building roof and construction methods, including roof main body, grouting hole, connecting piece, assembly type eaves gutter, eaves gutter connecting piece, assembly type eaves gutter is connected with the connecting piece of roof main body side by eaves gutter connecting piece, grouting hole pours high-strength cement mortar.The application relates to the technical field of antique building, and the quality of factory production of assembly type eaves gutter is more controllable, and meanwhile, the assembly type eaves gutter is more functional, which can integrate a water level sensor in the eaves gutter for indirectly detecting whether the drain is blocked.The water level sensor is electrically connected with the photovoltaic panel arranged on the roof to monitor the water level change in the eaves gutter body all day long.When the water level abnormally rises and exceeds the safety threshold, the system will immediately issue an alarm and accurately locate the blockage point, providing a basis for quick repair and reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of antique building technology, and in particular to an assembled eaves gutter structure and construction method for antique building roofs. Background Technology

[0002] The eaves gutter in antique-style buildings is the drainage system under the eaves, traditionally called "lucao" or "tiangou". Its core function is to collect and guide rainwater from the roof in an orderly manner, protecting the foundation from erosion. Through the aesthetic design of components such as drip tiles and eaves tiles, the "rainwater returning to the gutter" becomes part of the building facade. In modern antique-style buildings, while inheriting the traditional visual style, the eaves gutter also brings greater construction difficulties. The slope of antique-style eaves varies, the rafters are small and the gaps are dense, making formwork extremely difficult. After demolding, a lot of grinding and repair are often required. The roof structure is complex, and the concrete is prone to leakage and inadequate vibration during pouring, leading to frequent seepage later. Traditional cast-in-place technology requires a large amount of formwork, and the production and installation are time-consuming, resulting in a large proportion of the construction period and cost for formwork engineering, low overall efficiency, and a long construction cycle. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or existing roof eaves gutter structures of antique buildings, the present invention is proposed.

[0005] The present invention aims to solve the problems of difficult construction, poor quality control, long construction period, and low efficiency of traditional antique-style building eaves gutters.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated eaves gutter structure for an antique-style building roof, comprising a roof body, the roof body being a sloping roof, a cement mortar leveling layer on the surface of the roof body, the roof body being made of concrete, grouting holes on the top of the roof body, and multiple connectors on one side of the roof body. The prefabricated eaves gutter structure further includes: a prefabricated eaves gutter, which is L-shaped and located on the outside of the roof body; eaves gutter connectors, located inside the prefabricated eaves gutter and extending outwards to be fixedly connected to the connectors of the roof body; an eaves gutter slope, sloping inwards at one end of the prefabricated eaves gutter; a waterproof membrane, located on the roof body and extending outwards from the roof body; a fine stone concrete protective layer, located on top of the waterproof membrane; and cement tiles, located on top of the fine stone concrete protective layer. The prefabricated eaves gutter is a prefabricated assembly structure. The prefabricated eaves gutter is connected to the main body of the roof through the eaves gutter connector. High-strength cement mortar is injected into the grouting holes. Rainwater falls onto the prefabricated eaves gutter and flows into the eaves gutter through the slope. The waterproof membrane extends from the main body of the roof down to the prefabricated eaves gutter and is laid flat. Rainwater falls onto the cement tiles and flows down into the prefabricated eaves gutter.

[0007] Preferably, the connector is an embedded part, and the eaves gutter connector is a steel core embedded part with an anchor bar mechanically connected to the main roof steel bar, and the anchor plate of the embedded part is welded to the steel core of the prefabricated eaves gutter.

[0008] Preferably, the connector is a connecting steel bar, and the eaves gutter connector is also a connecting steel bar. The connecting steel bar has a threaded end, and the connecting steel bar is connected by a threaded sleeve.

[0009] Preferably, the prefabricated eaves gutter is an aluminum alloy structure, which includes an eaves gutter body, set on the outside of the main roof structure; a water baffle, set on the outside of the eaves gutter body; a hanging member, set on the eaves gutter body, with a connecting steel bar groove at the end of the hanging member; a reinforcing bar, set at the bottom of the eaves gutter body; and a water level sensor, set on the side wall of the eaves gutter body. The hanging component is snapped to the eaves gutter body to strengthen the structure of the eaves gutter body. The hanging component is mechanically connected to the connecting steel bar groove of the roof body. The water level sensor is electrically connected to the photovoltaic panel installed on the roof to detect the water level height in the eaves gutter body.

[0010] Preferably, a grouting groove is provided on the side of the prefabricated eaves gutter that is in contact with the main roof structure.

[0011] Preferably, the prefabricated eaves gutter is coated with fluorocarbon.

[0012] This invention also provides a construction method for prefabricated installation of eaves gutter structures on the roofs of antique-style buildings, comprising the following steps: S1. During the main construction phase, when pouring the roof beams, embed the embedded parts according to the design position. The anchor bars of the embedded parts are mechanically connected to the main steel bars of the roof. The anchor plates of the embedded parts are on the outside of the main roof structure. S2. The steel sleeve core installed in the prefabricated eaves gutter faces the anchor plate of the embedded part. The position of the steel sleeve core corresponds to the anchor plate. The crane lifts the prefabricated eaves gutter to the predetermined position. The construction personnel spot weld the steel sleeve core at both ends of the prefabricated eaves gutter to the anchor plate to ensure accurate positioning. S3. Full welding is carried out on the prefabricated eaves gutter after positioning to ensure that the steel sleeve core is firmly welded to the anchor plate. Then, high-strength cement mortar is sprayed through the grouting holes set at the top of the main roof structure. The cement mortar fills the grouting holes and the interior of the steel sleeve core. The temporary support can be removed after the cement mortar reaches the design strength. S4. After the prefabricated eaves gutter is installed, use cement mortar to create a slope in the prefabricated eaves gutter to facilitate drainage. Then, apply the waterproof membrane. The waterproof membrane should be laid from the lowest point of the eaves gutter on the roof upwards, ensuring that the overlapping direction is correct. The waterproof membrane should be laid to the top of the outer edge of the prefabricated eaves gutter. After the waterproof membrane is applied, add a fine stone concrete protective layer on top of the waterproof membrane to protect the waterproof layer. Beneficial effects

[0013] The beneficial effects of this invention are as follows: by using prefabricated eaves gutters with reinforced concrete structures produced in factories, the production environment is controllable, the dimensions of the prefabricated eaves gutter components, the concrete strength, and the position of the reinforcing bars are more precise, and the quality is more guaranteed than on-site construction. The prefabricated eaves gutters are connected to the embedded parts on one side of the roof main body through steel sleeve cores, and high-strength cement mortar is injected into the grouting holes for anchoring. The connection is firm and can effectively transfer the load. Furthermore, by applying prestress, cracks in the eaves gutters under stress can be reduced, making the eaves gutter structure safer and the quality of the eaves gutters can be effectively controlled. Meanwhile, the prefabricated eaves gutter construction process can eliminate the formwork process, making construction faster, improving construction progress, and shortening the construction cycle. The prefabricated eaves gutter is produced in a factory, making its quality more controllable. At the same time, the prefabricated eaves gutter has richer functions. It can integrate a water level sensor in the eaves gutter to indirectly detect whether the drainage outlet is blocked. The water level sensor is electrically connected to the photovoltaic panels installed on the roof, which can monitor the water level changes in the eaves gutter body around the clock. When the water level rises abnormally and exceeds the safety threshold, the system will immediately issue an alarm and accurately locate the blockage point, providing a basis for rapid repair and reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of the embedded part of the present invention; Figure 3 This is a structural diagram of the connector of the present invention; Figure 4 This is a structural diagram of the aluminum alloy assembled eaves gutter of the present invention; Figure 5 for Figure 4 Enlarged view of a portion of region A in the middle; Figure 6 This is a flowchart illustrating the construction process of the prefabricated eaves gutter of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Main roof structure; 2. Sloping roof; 3. Cement mortar leveling layer; 4. Grouting hole; 5. Connector; 6. Prefabricated eaves gutter; 7. Eaves gutter connector; 8. Eaves gutter slope; 9. Waterproof membrane; 10. Fine aggregate concrete protective layer; 11. Cement tile; 12. Embedded part; 13. Steel core sleeve; 14. Anchor bar; 15. Anchor plate; 16. Connecting reinforcing bar; 17. Thread; 18. Grouting groove; 61. Eaves gutter body; 62. Water-retaining plate; 63. Hanger; 64. Connecting reinforcing bar groove; 65. Reinforcing bar; 66. Water level sensor. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] The present invention aims to solve the problems of difficult construction, poor quality control, long construction period, and low efficiency of traditional antique-style building eaves gutters.

[0018] In view of this, the present invention provides a prefabricated eaves gutter structure for antique-style building roofs. By using prefabricated eaves gutters made of reinforced concrete produced in a factory, the production environment is controllable. The dimensions of the prefabricated eaves gutter components, concrete strength, and rebar placement are more precise, resulting in higher quality assurance compared to on-site construction. The prefabricated eaves gutter is connected to embedded parts on one side of the roof structure via a steel sleeve core, and anchored by injecting high-strength cement mortar into the grouting holes. This connection is firm and effectively transfers loads. Furthermore, by applying prestress, cracks in the eaves gutter under stress can be reduced, making the eaves gutter structure safer and of higher quality. It can effectively control the situation; at the same time, the prefabricated eaves gutter construction process can eliminate the formwork process, making construction faster and improving the construction progress and shortening the construction cycle. The quality of prefabricated eaves gutters is more controllable due to factory production. In addition, prefabricated eaves gutters have richer functions. They can integrate water level sensors in the eaves gutter to indirectly detect whether the drainage outlet is blocked. The water level sensor is electrically connected to the photovoltaic panels installed on the roof to monitor the water level changes in the eaves gutter body around the clock. When the water level rises abnormally and exceeds the safety threshold, the system will immediately issue an alarm and accurately locate the blockage point, providing a basis for rapid repair and reducing maintenance costs.

[0019] Reference Figures 1-3 and Figure 6This embodiment provides a prefabricated eaves gutter structure for an antique-style building roof, including a roof body 1, which is a sloping roof 2. A cement mortar leveling layer 3 is provided on the surface of the roof body 1. The roof body 1 is made of concrete. A grouting hole 4 is provided on the top of the roof body 1. Multiple connectors 5 are provided on one side of the roof body 1. The prefabricated eaves gutter structure for an antique-style building roof also includes a prefabricated eaves gutter 6, which is an L-shaped structure and is located on the outside of the roof body 1; eaves gutter connectors 7 are located inside the prefabricated eaves gutter 6 and extend outward to be fixedly connected to the connectors 5 of the roof body 1; an eaves gutter slope 8 is provided at one end of the prefabricated eaves gutter 6 and slopes inward; a waterproof membrane 9 is provided on the roof body 1 and extends outward from the roof body 1; a fine stone concrete protective layer 10 is provided on the upper end of the waterproof membrane 9; and cement tiles 11 are provided on the upper end of the fine stone concrete protective layer 10. In the specific implementation process, the prefabricated eaves gutter 6 is a prefabricated assembly structure, which is produced in a factory with a controllable production environment. The dimensions of the prefabricated eaves gutter 6 components, concrete strength, and steel bar positions are more precise, and the quality is more guaranteed than on-site construction. The prefabricated eaves gutter 6 is connected to the connecting piece 5 on one side of the roof main body 1 through the eaves gutter connector 7. High-strength cement mortar is injected into the grouting hole 4 for anchoring. The connection is firm and can effectively transfer the load. Furthermore, by applying prestress, the cracks in the eaves gutter under stress can be reduced, making the eaves gutter structure safer. Rainwater falls onto the prefabricated eaves gutter 6 and flows into the eaves gutter through the eaves gutter slope 8. The waterproof membrane 9 extends down from the roof main body 1 to the prefabricated eaves gutter 6 and is laid flat. At the junction of the prefabricated eaves gutter 6 with the roof, walls, and drain outlets, an additional waterproof layer needs to be added and sealed with sealant. Rainwater falls onto the cement tile 11 and flows down into the prefabricated eaves gutter 6.

[0020] Furthermore, the connector 5 is an embedded part 12, and the eaves gutter connector 7 is a steel sleeve core 13. The anchor bar 14 of the embedded part 12 is mechanically connected to the steel reinforcement of the roof main body 1. The anchor plate 15 of the embedded part 12 is welded to the steel sleeve core 13 of the prefabricated eaves gutter 6. Furthermore, the anchor plate 15 is provided with an anchor bar 14 on the side facing the steel sleeve core 13. The anchor bar 14 is inserted into the steel sleeve core 13, and then high-strength cement mortar is poured for anchoring. The specific connection method is not limited, as long as the structural strength is met. Compared with the traditional eaves gutter construction process, the prefabricated eaves gutter 6 construction process can save the formwork process, making construction faster and improving the construction progress and shortening the construction cycle. The prefabricated eaves gutter 6 is more controllable in terms of factory production quality. At the same time, the prefabricated eaves gutter 6 has richer functions, and can integrate a water level sensor in the eaves gutter for indirect detection of whether the drainage outlet is blocked.

[0021] Furthermore, the connector 5 is a connecting steel bar 16, and the eaves gutter connector 7 is also a connecting steel bar 16. The connecting steel bar 16 has a threaded end 17 at its end. The connecting steel bar 16 is connected by a threaded sleeve. The bottom formwork and side formwork are installed at the position of the prefabricated eaves gutter 6 and supported by the outer protective frame. After connecting the connecting steel bar 16 of the prefabricated eaves gutter 6 with the connecting steel bar 16 of the eaves gutter connector 7, concrete is poured at the junction of the prefabricated eaves gutter 6 and the roof body 1 to form an integral whole with the prefabricated eaves gutter 6 and the roof body 1, which can effectively improve the overall rigidity and seismic performance of the structure.

[0022] Reference Figures 4-5 This second embodiment provides a prefabricated eaves gutter structure for an antique-style building roof, including a roof body 1, which is a sloping roof 2. A cement mortar leveling layer 3 is provided on the surface of the roof body 1. Multiple connectors 5 are provided on one side of the roof body 1. The prefabricated eaves gutter structure also includes a prefabricated eaves gutter 6, which is a U-shaped structure and is located on the outside of the roof body 1. Eaves gutter connectors 7 are provided on the prefabricated eaves gutter 6 and extend outwards to be fixedly connected to the connectors 5 of the roof body 1. The prefabricated eaves gutter 6 is an aluminum alloy structure and uses fluorine... Carbon spraying includes an eaves gutter body 61, a water-blocking plate 62, a hanging member 63, a connecting steel bar groove 64, a reinforcing bar 65, a water level sensor 66, and a grouting groove 18. The eaves gutter body 61 is located on the outside of the roof body 1. The water-blocking plate 62 is located on the outside of the eaves gutter body 61. The hanging member 63 is located on the eaves gutter body 61, and the end of the hanging member 63 has a connecting steel bar groove 64. The reinforcing bar 65 is located at the bottom of the eaves gutter body 61. The water level sensor 66 is located on the side wall of the eaves gutter body 61. The grouting groove 18 is located on the side of the prefabricated eaves gutter 6 that is attached to the roof body 1. In the specific implementation process, the hanging component 63 is snapped to the eaves gutter body 61 to strengthen the structural strength of the eaves gutter body 61. The hanging component 63 is mechanically connected to the connecting steel bar 16 set in the roof body 1 through the connecting steel bar groove 64. The water level sensor 66 is electrically connected to the photovoltaic panel set in the roof to monitor the water level change in the eaves gutter body 61 around the clock. When the water level rises abnormally and exceeds the safety threshold, the system will immediately issue an alarm and accurately locate the blockage point, providing a basis for rapid repair and avoiding the danger of manual climbing of the roof for inspection in bad weather. It is especially effective for complex roofs that are difficult to inspect manually, such as large public buildings and transportation hubs. The grouting groove 18 is filled with cement mortar or weather-resistant adhesive to strengthen the tightness of the fit between the eaves gutter body 61 and the roof body 1. It is worth noting during the construction process that when installing the prefabricated eaves gutter 6 with aluminum alloy structure, the connecting steel bar slot 64 at the end of the hanger 63 is mechanically connected to the connecting steel bar 16 set on one side of the roof body 1, so that the eaves gutter body 61 is fixed to the side wall of the roof body 1. The construction workers fill the assembly gap between the prefabricated eaves gutter 6 and the side wall of the roof body 1 through the grouting groove 18. The water level sensor 66 is fixedly connected to the upper side wall of the eaves gutter body 61. The installation height of the water level sensor 66 is consistent with the design height of the water level to prevent the water level sensor 66 from frequently alarming to remind the prefabricated eaves gutter 6 of blockage.

[0023] Based on the same inventive concept, this application also provides a construction method for a prefabricated eaves gutter structure for an antique-style building roof, based on the implementation of a prefabricated eaves gutter structure for an antique-style building roof provided in Embodiment 1, including the following steps: S1. During the main construction phase, when pouring the roof beam, the embedded parts 12 are pre-embedded at the design position. The anchor bars 14 of the embedded parts 12 are mechanically connected to the steel bars of the roof main body 1. The anchor plates 15 of the embedded parts 12 face the outside of the roof main body 1. S2. The steel sleeve core 13 installed inside the prefabricated eaves gutter 6 faces the anchor plate 15 of the embedded part 12. The position of the steel sleeve core 13 corresponds to the anchor plate 15. The crane lifts the prefabricated eaves gutter 6 to the predetermined position. The construction personnel spot weld the steel sleeve core 13 at both ends of the prefabricated eaves gutter 6 to the anchor plate 15 to ensure accurate positioning. S3. Full welding is carried out on the prefabricated eaves gutter 6 after positioning to ensure that the steel sleeve core 13 and the anchor plate 15 are firmly welded. Then, high-strength cement mortar is sprayed through the grouting hole 4 set at the top of the roof body 1. The cement mortar fills the grouting hole 4 and the interior of the steel sleeve core 13. The temporary support can be removed after the cement mortar reaches the design strength. S4. After the prefabricated eaves gutter 6 is installed, use cement mortar to create a slope on the prefabricated eaves gutter 6 to facilitate drainage. Then, the waterproof membrane 9 is installed. The waterproof membrane 9 should be laid from the lowest point of the eaves gutter on the roof and up to the top, ensuring that the overlapping direction is correct. The waterproof membrane 9 should be laid to the top of the outer edge of the prefabricated eaves gutter 6. After the waterproof membrane 9 is installed, a fine stone concrete protective layer 10 is added on the top of the waterproof membrane 9 to protect the waterproof layer.

Claims

1. A prefabricated eaves gutter structure for an antique-style building roof, comprising a roof body (1), the roof body (1) being a sloping roof (2), wherein a cement mortar leveling layer (3) is provided on the surface of the roof body (1), characterized in that: The roof body (1) is made of concrete, and a grouting hole (4) is provided on the top of the roof body (1). Multiple connectors (5) are provided on one side of the roof body (1). The prefabricated eaves gutter structure of the antique building roof also includes: Prefabricated eaves gutter (6), which is an L-shaped structure, is set on the outside of the main roof (1); The eaves gutter connector (7) is installed inside the prefabricated eaves gutter (6) and extends outward to be fixedly connected to the connector (5) of the roof body (1); The slope of the eaves gutter (8) is set at one end of the prefabricated eaves gutter (6) and tilts inward; Waterproof membrane (9) is installed on the roof body (1) and extends outward from the roof body (1); A fine aggregate concrete protective layer (10) is placed on top of the waterproof membrane (9); Cement tiles (11) are installed on the upper end of the fine stone concrete protective layer (10); Among them, the prefabricated eaves gutter (6) is a prefabricated assembly structure. The prefabricated eaves gutter (6) is connected to the connecting piece (5) on one side of the roof main body (1) through the eaves gutter connector (7). High-strength cement mortar is injected into the grouting hole (4). Rainwater falls onto the prefabricated eaves gutter (6) and flows into the eaves gutter through the eaves gutter slope (8). Waterproof membrane (9) extends down from the roof main body (1) to the prefabricated eaves gutter (6) and is laid flat. Rainwater falls onto the cement tile (11) and flows down into the prefabricated eaves gutter (6).

2. The prefabricated eaves gutter structure for an antique-style building roof according to claim 1, characterized in that: The connector (5) is an embedded part (12), the eaves gutter connector (7) is a steel sleeve core (13), the anchor bar (14) of the embedded part (12) is mechanically connected to the steel bar of the roof main body (1), and the anchor plate (15) of the embedded part (12) is welded to the steel sleeve core (13) of the prefabricated eaves gutter (6).

3. The prefabricated eaves gutter structure for an antique-style building roof according to claim 1, characterized in that: The connector (5) is a connecting steel bar (16), and the eaves gutter connector (7) is also a connecting steel bar (16). The connecting steel bar (16) has a threaded end (17) at the end, and the connecting steel bar (16) is connected by a threaded sleeve.

4. The prefabricated eaves gutter structure for an antique-style building roof according to claim 3, characterized in that: The prefabricated eaves gutter (6) is an aluminum alloy structure, which includes: The eaves gutter body (61) is located on the outside of the roof body (1); A water baffle (62) is installed on the outside of the eaves gutter body (61); The hanging component (63) is installed on the eaves gutter body (61), and the end of the hanging component (63) has a connecting steel bar groove (64). A reinforcing rib (65) is provided at the bottom of the eaves gutter body (61); A water level sensor (66) is installed on the side wall of the eaves gutter body (61); The hanging component (63) is snapped together with the eaves gutter body (61) to strengthen the structural strength of the eaves gutter body (61). The hanging component (63) is mechanically connected to the connecting steel bar (16) set in the roof body (1) through the connecting steel bar groove (64). The water level sensor (66) is electrically connected to the photovoltaic panel set in the roof to detect the water level height in the eaves gutter body (61).

5. The prefabricated eaves gutter structure for an antique-style building roof according to claim 4, characterized in that: The prefabricated eaves gutter (6) is provided with a grouting groove (18) on the side that is in contact with the roof body (1).

6. The prefabricated eaves gutter structure for an antique-style building roof according to claim 4, characterized in that: The prefabricated eaves gutter (6) is coated with fluorocarbon.

7. A construction method for a prefabricated eaves gutter structure for an antique-style building roof, based on the prefabricated eaves gutter structure for an antique-style building roof as described in claim 6, characterized in that: S1. During the main construction stage, when pouring the roof beam, the embedded parts (12) are pre-embedded according to the design position. The anchor bars (14) of the embedded parts (12) are mechanically connected to the steel bars of the roof main body (1). The anchor plate (15) of the embedded parts (12) is on the outside of the roof main body (1). S2. The steel sleeve core (13) installed in the prefabricated eaves gutter (6) faces the anchor plate (15) of the embedded part (12). The position of the steel sleeve core (13) corresponds to the anchor plate (15). The crane lifts the prefabricated prefabricated eaves gutter (6) to the predetermined position. The construction personnel spot weld the steel sleeve core (13) at both ends of the prefabricated eaves gutter (6) to the anchor plate (15) to ensure accurate positioning. S3. The prefabricated eaves gutter (6) after positioning is fully welded to ensure that the steel sleeve core (13) and the anchor plate (15) are firmly welded. Then, high-strength cement mortar is sprayed through the grouting hole (4) set at the top of the roof body (1). The cement mortar fills the grouting hole (4) and the interior of the steel sleeve core (13). The temporary support can be removed after the cement mortar reaches the design strength. S4. After the prefabricated eaves gutter (6) is installed, cement mortar is used to create a slope in the prefabricated eaves gutter (6) to facilitate drainage. Then, the waterproof membrane (9) is installed. The waterproof membrane (9) should be laid from the lowest point of the eaves gutter on the roof to the highest point, ensuring that the overlapping direction is correct. The waterproof membrane (9) should be laid to the top of the outer edge of the prefabricated eaves gutter (6). After the waterproof membrane (9) is installed, a fine stone concrete protective layer (10) is added to the top of the waterproof membrane (9) to protect the waterproof layer.

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