Drainage system at joint of sloping roof and flat roof
By designing structures such as rain ditch and water slabs at the junction of the inclined roof and flat roof, the problems of construction difficulty and material waste are solved, and efficient and beautiful drainage effects are achieved.
Patent Information
- Application Number
- CN202422388513.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In buildings, the drainage system at the junction of the sloped roof and the flat roof has the problem of construction difficulty and wasting drainage pipe materials.
A drainage system is designed at the junction of the inclined roof and the flat roof. By setting up a leveling layer and a slope-finding layer on the flat roof, and setting up insulation layer, roof panels and roof tiles on the inclined roof, a rainwater ditch is formed, and the same drainage pipe is used for drainage, combining water-filling plates and grates to prevent debris from entering, drainage pipes prevent water leakage, and drainage pipes made of PVC material.
It reduces construction difficulty, saves drain pipe materials, improves the efficiency and aesthetics of the drainage system, and extends the service life of the drainage pipe.
Smart Images
Figure CN223164130U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building drainage, in particular to a drainage system at the junction of a sloping roof and a flat roof. Background Technique
[0002] Buildings can be simply divided into flat-roof buildings and pitched-roof buildings. The roof surface of a flat-roof building is called a flat roof, and the roof surface of a pitched-roof building is called a sloping roof. Now, there are a large number of buildings that combine flat roofs and sloping roofs.
[0003] Separate organized drainage for flat roofs and sloping roofs is relatively common. However, it is a difficult problem to drain water simultaneously at the junction of the flat roof and the sloping roof of some buildings. When two different forms of roof surfaces are on the same building, drainage ditches and drain pipes are respectively organized for drainage. When the drainage volume is not so large, it seems rather wasteful. Moreover, when draining water separately for two different forms of roof surfaces on the same building, there is a great construction difficulty, and improvement is needed. Content of the Utility Model
[0004] The purpose of the utility model is to provide a drainage system at the junction of a sloping roof and a flat roof with low construction difficulty and capable of saving drain pipes.
[0005] The utility model provides a drainage system at the junction of a sloping roof and a flat roof. A leveling layer and a slope-forming layer are arranged above the flat roof, and the slope-forming layer is located above the leveling layer. A heat preservation layer, a roof slab, and roof tiles are arranged above the sloping roof. The roof slab is fixedly arranged on the heat preservation layer, and the roof tiles are fixedly arranged on the roof slab. The heat preservation layer and the roof slab extend above the flat roof. A rainwater gutter is formed between the leveling layer and the slope-forming layer and the heat preservation layer and the roof slab. A drain pipe is arranged at the bottom end of the flat roof, and one end of the drain pipe is communicated with the rainwater gutter. A flashing is arranged on one side of the roof slab close to the rainwater gutter. The surface of the flashing abuts against the roof slab, and a baffle is arranged between the flashing and the roof tiles.
[0006] Preferably, a drain pipe for receiving accumulated water at the ridge is arranged between the sloping roof and the heat preservation layer. The upper end opening of the drain pipe is close to the ridge tile, and the gap between the upper end opening of the drain pipe and the surrounding of the ridge tile is sealed with sealant.
[0007] Preferably, a sealant layer is arranged at the bottom end of the roof tiles, and the two side surfaces of the baffle respectively abut against the sealant layer and the flashing.
[0008] Preferably, a waterproof coiled material is arranged on the bottom surfaces of the heat preservation layer and the leveling layer. The waterproof coiled material is attached to the bottom surfaces of the heat preservation layer and the leveling layer. A parapet wall is arranged on one side of the flat roof far from the sloping roof. The waterproof coiled material is rolled up to abut against the parapet wall and is fixed on the parapet wall.
[0009] Preferably, reinforcing bar heads are pre-embedded in the roof slab. The two-way spacing of the reinforcing bar heads is "L", and L = 900 mm is satisfied. The reinforcing bar heads and the steel bar mesh in the inclined roof are fixed by wire binding.
[0010] Preferably, galvanized gaskets are fixedly embedded in the roof slab. The roof tiles and the sealant layer are fixed to the galvanized gaskets by cement nails.
[0011] Preferably, the rainwater gutter is narrower at the bottom and wider at the top, and the slope of the slope-forming layer is set to 2%.
[0012] Preferably, the drain pipe is made of PVC material. The drain pipe includes a swivel pipe and a downpipe. The two ends of the swivel pipe are respectively communicated with the rainwater gutter and the downpipe. A support beam is arranged at the bottom end of the inclined roof near the flat roof, and the swivel pipe is hidden on one side of the support beam.
[0013] Preferably, the flashing is made of aluminum material.
[0014] As can be seen from the above description of the present invention, the present invention has the following beneficial effects:
[0015] 1. The insulation layer and the roof slab on the pitched roof are extended to the flat roof, so that a rainwater gutter is formed between the leveling layer and the slope-forming layer on the flat roof and the insulation layer and the roof slab on the flat roof. A drain pipe is communicated and arranged below the rainwater gutter, so that the drainage of the flat roof and the pitched roof share the same rainwater gutter and are discharged through the same drain pipe, which not only reduces the construction difficulty, but also saves drain pipe materials.
[0016] 2. A flashing is arranged on one side of the roof slab close to the rainwater gutter, so that the surface of the flashing abuts against the roof slab. A sealant layer is arranged at the bottom end of the roof tile. A baffle is arranged between the flashing and the sealant layer. By arranging the flashing, the counter-camber on the inclined roof is prevented from being washed by rainwater. By arranging the baffle, sundries are prevented from entering from the eaves between the roof tile and the roof slab.
[0017] 3. A drain pipe with the upper end opening close to the ridge tile is arranged between the inclined roof and the insulation layer. The drain pipe is arranged to facilitate the drainage of the ridge. The upper end opening of the drain pipe and the gap around the ridge tile are sealed with sealant to avoid water leakage between the drain pipe and the ridge tile. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the overall structural schematic diagram of the drainage system at the junction of the inclined roof and the flat roof in Embodiment 1;
[0019] Figure 2 is the structural schematic diagram of the flat roof, the leveling layer and the slope-forming layer in Embodiment 1;
[0020] Figure 3 1 is a schematic structural diagram of a roof panel and a steel bar head according to an embodiment;
[0021] Figure 4 Schematic diagram of the structure of the sloping roof, insulation layer and roof panel of the embodiment;
[0022] Figure 5 This is an embodiment Figure 1 A partial enlarged view of point A in the middle.
[0023] Figure numerals: 1. Sloping roof; 11. Support beam; 2. Flat roof; 21. Parapet; 22. Leveling layer; 23. Slope layer; 3. Waterproof membrane; 4. Drain pipe; 5. Insulation layer; 6. Roof panel; 61. Steel bar head; 62. Iron wire; 63. Galvanized gasket; 64. Concrete nail; 65. Flashing board; 66. Grate; 7. Roof tile; 71. Sealant layer; 8. Rain gutter; 9. Drain pipe; 91. Turn pipe; 92. Downpipe. DETAILED DESCRIPTION
[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figures 1-5 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] Reference Figure 1 and Figure 2 A drainage system for the junction of a sloping roof and a flat roof is described. A waterproofing membrane 3 is laid on the surfaces of the flat roof 2 and the sloping roof 1. A parapet 21 is provided on the side of the flat roof 2 away from the sloping roof 1. The waterproofing membrane 3 is extended and fixed to the surface of the parapet 21, thereby providing good waterproofing for both the flat roof 2 and the sloping roof 1. A leveling layer 22 is provided on the waterproofing membrane 3 on the flat roof 2 to form a flat surface. A slope layer 23 is cast on the leveling layer 22 to form a surface with a slope of 2%. The leveling layer 22 and the slope layer 23 are arranged to be inclined on the side of the sloping roof 1.
[0026] In order to achieve good drainage at the ridge of the sloping roof 1, a drain pipe 4 is provided between the sloping roof 1 and the waterproof membrane 3. The drain pipe 4 is in contact with the surface of the sloping roof 1, and one end of the drain pipe 4 is connected to the ridge of the sloping roof 1. Water accumulated at the ridge is discharged through the drain pipe 4. The upper end of the drain pipe 4 is sealed with sealant near the ridge tile, thereby blocking the gap between the end of the drain pipe 4 and the ridge tile, thereby preventing water leakage.
[0027] Reference Figure 3And Figure 4 To enable the pitched roof 1 to have good drainage and waterproofing effects, a thermal insulation layer 5, a roof slab 6, and roof tiles 7 are sequentially arranged from the bottom end to the top end above the waterproof coiled material 3 on the pitched roof 1. The thermal insulation layer 5 is arranged above the waterproof coiled material 3, and the setting of the thermal insulation layer 5 has a good waterproof and heat insulation effect on the inside of the pitched roof 1, and the roof slab 6 is arranged above the thermal insulation layer 5. To make the roof slab 6 and the thermal insulation layer 5 set firmly, steel bar heads 61 with a diameter of 10 mm are embedded in the roof slab 6. The spacing dimension between the steel bar heads 61 embedded in the roof slab 6 in both directions is set to "L", and L = 900 mm is satisfied. The steel bar heads 61 embedded in the roof slab 6 and the steel bar mesh in the pitched roof 1 are tied and fixed with iron wires 62. After the pitched roof 1 is completed by casting with fine stone concrete, the roof slab 6 and the thermal insulation layer 5 are set firmly in this way.
[0028] Refer to Figure 2 、 Figure 4 And Figure 5 To further improve the waterproofing effect of the pitched roof 1, the roof tiles 7 are arranged above the roof slab 6. To make the roof tiles 7 set firmly on the roof slab 6, galvanized washers 63 are arranged in the roof slab 6, and the roof tiles 7 and the galvanized washers 63 are fixed with cement nails 64. The setting of the roof tiles 7 forms an eaves between it and the roof slab 6. To prevent the counter-camber on the pitched roof 1 from being washed by rainwater, a flashing 65 is arranged at the eaves between the roof tiles 7 and the roof slab 6. The flashing 65 is made of aluminum material. The flashing 65 made of aluminum material is light in weight, easy to carry and install, reducing the construction difficulty and cost. In addition, the flashing 65 made of aluminum material has good anti-corrosion performance and weather resistance. The aluminum flashing 65 can maintain a good state for a long time in the outdoor environment to reduce the maintenance cost, and has better oxidation resistance and longer service life compared with other materials. In addition, to prevent sundries from entering from the eaves between the roof tiles 7 and the roof slab 6, a sealant layer 71 is arranged at the bottom end of the roof tiles 7, and a baffle 66 is arranged between the flashing 65 and the sealant layer 71, so that the baffle 66 is in contact with the flashing 65 and the sealant layer 71 respectively.
[0029] One side of the thermal insulation layer 5 and the roof slab 6 extends above the flat roof 2, so that a rainwater gutter 8 is formed between the thermal insulation layer 5 and the roof slab 6 on the flat roof 2 and the leveling layer 22 and the slope-forming layer 23 on the flat roof 2. The formed rainwater gutter 8 is located on the side of the flat roof 2 close to the pitched roof 1. One side of the thermal insulation layer 5 and the roof slab 6 facing the leveling layer 22 and the slope-forming layer 23 is set to be inclined, so that the rainwater gutter 8 is formed in an inverted trapezoidal shape with a wider upper part and a narrower lower part. The rainwater falling on the slope-forming layer 23 above the flat roof 2 flows along its inclined direction into the rainwater gutter 8, and the rainwater falling on the roof tiles 7 also flows along its surface into the rainwater gutter 8.
[0030] Reference Figure 1 , a drain pipe 9 is provided at the bottom end of the flat roof 2. The drain pipe 9 is set to include a swivel pipe 91 and a downspout 92. One end of the swivel pipe 91 is communicated with the rain gutter 8, and the other end of the swivel pipe 91 is connected to the downspout 92. The vertical section of the downspout 92 is arranged along the wall. A support beam 11 is formed at the bottom end of the inclined roof 1 close to the flat roof 2, and the swivel pipe 91 is hidden on one side of the support beam, so that the setting of the swivel pipe 91 does not look obtrusive and improves the overall aesthetics of the building. And the drain pipe 9 is made of PVC material. The drain pipe 9 made of PVC material has good tensile and compressive strength, so that the drain pipe 9 has good hardness and can prevent insect and ant erosion. And the drain pipe 9 made of PVC material has good corrosion resistance and chemical resistance, is very acid-resistant, alkali-resistant, corrosion-resistant, not affected by moisture and soil pH, and has a longer service life. And the pipe wall of the drain pipe 9 made of PVC material is very smooth, so the resistance of water flow is very small. Its water conveyance capacity is 20% higher than that of a cast iron pipe with the same diameter, and the water conveyance efficiency is very high.
[0031] The specific implementation principle of the embodiment of the present application is as follows: When constructing the drainage system at the intersection of the inclined roof 1 and the flat roof 2, a drain pipe 4 is provided on the inclined roof 1. One end of the drain pipe 4 is located at the ridge. The gap between the drain pipe 4 and the ridge tile is sealed with sealant. The drain pipe 4 is provided to receive the accumulated water on the ridge. A waterproof coiled material 3 is provided above the drain pipe 4, and the waterproof coiled material 3 extends above the flat roof 2 and is fixedly attached to the surface of the parapet wall 21. A thermal insulation layer 5 is provided on the waterproof coiled material 3 above the inclined roof 1. A roof slab 6 is provided above the thermal insulation layer 5, and one side of the thermal insulation layer 5 and the roof slab 6 extends above the flat roof 2. The steel bar head 61 embedded in the roof slab 6 is tied and fixed to the steel bar mesh in the inclined roof 1 with a wire 62. A roofing tile 7 is provided above the roof slab 6. Sealant is provided at the bottom end of the roofing tile 7. A flashing 65 and a baffle 66 are provided between the roofing layer and the sealant. One side surface of the flashing 65 abuts against the roof slab 6, and both sides of the baffle 66 abut against the sealant and the flashing 65 respectively. The roofing tile 7 is fixed to the galvanized gasket 63 in the roof slab 6 with a cement nail 64.
[0032] A leveling layer 22 is constructed on the waterproof coiled material 3 on the flat roof 2. A slope layer 23 with a slope of 2% is constructed above the leveling layer 22, so that a rain gutter 8 is formed between the leveling layer 22 and the slope layer 23 on the flat roof 2 and the thermal insulation layer 5 and the roof slab 6 on the inclined roof 1. The rainwater above the flat roof 2 flows into the rain gutter 8 along the surface of the slope layer 23, and the rainwater above the inclined roof 1 flows into the rain gutter 8 along the surface of the roofing tile 7. The rainwater entering the rain gutter 8 is discharged through the drain pipe 9.
[0033] The present utility model has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.
Claims
1. A drainage system at the junction of a pitched roof and a flat roof, characterized in that: A leveling layer and a slope-forming layer are provided above the flat roof, and the slope-forming layer is located above the leveling layer. An insulation layer, a roof slab, and roof tiles are provided above the pitched roof. The roof slab is fixedly arranged on the insulation layer, and the roof tiles are fixedly arranged on the roof slab. The insulation layer and the roof slab extend above the flat roof. A rainwater gutter is formed between the leveling layer and the slope-forming layer and the insulation layer and the roof slab. A drain pipe is provided at the bottom end of the flat roof, and one end of the drain pipe is communicated with the rainwater gutter. A flashing plate is provided on one side of the roof slab close to the rainwater gutter. The surface of the flashing plate abuts against the roof slab, and a baffle is provided between the flashing plate and the roof tiles.
2. The drainage system at the junction of a pitched roof and a flat roof according to claim 1, characterized in that: A drain pipe for receiving ridge ponding is provided between the pitched roof and the insulation layer. The upper end opening of the drain pipe is close to the ridge tile, and the gap between the upper end opening of the drain pipe and the periphery of the ridge tile is sealed with sealant.
3. The drainage system at the intersection of a pitched roof and a flat roof according to claim 1, wherein: A sealant layer is provided at the bottom end of the roof tiles. The two side surfaces of the baffle abut against the sealant layer and the flashing plate respectively.
4. A drainage system at the junction of a pitched roof and a flat roof according to claim 1, characterized in that: A waterproof coiled material is provided on the bottom surfaces of the insulation layer and the leveling layer. The waterproof coiled material is attached to the bottom surfaces of the insulation layer and the leveling layer. A parapet wall is provided on one side of the flat roof away from the pitched roof. The waterproof coiled material is rolled up to be attached to the parapet wall and fixed on the parapet wall.
5. The drainage system at the intersection of a pitched roof and a flat roof according to claim 1, wherein: Steel bar heads are embedded in the roof slab. The two-way spacing of the steel bar heads is "L", and L = 900 mm is satisfied. The steel bar heads are fixedly tied with the steel bar mesh in the pitched roof by iron wires.
6. The drainage system at the junction of a pitched roof and a flat roof according to claim 3, characterized in that: Galvanized gaskets are fixedly embedded in the roof slab. The roof tiles and the sealant layer are fixed to the galvanized gaskets by cement nails.
7. A drainage system at the junction of a pitched roof and a flat roof according to claim 1, characterized in that: The rainwater gutter is narrow at the bottom and wide at the top. The slope of the slope-forming layer is set to 2%.
8. A drainage system at the junction of a sloping roof and a flat roof according to claim 1, characterized in that: The drain pipe is made of PVC material. The drain pipe includes a swivel pipe and a downpipe. The two ends of the swivel pipe are respectively communicated with the rainwater gutter and the downpipe. A support beam is provided at the bottom end of one side of the pitched roof close to the flat roof. The swivel pipe is hidden on one side of the support beam.
9. The drainage system at the junction of a pitched roof and a flat roof according to claim 1, characterized in that: The flashing plate is made of aluminum material.