CN208347160U - A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing - Google Patents
A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing Download PDFInfo
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- CN208347160U CN208347160U CN201820391240.2U CN201820391240U CN208347160U CN 208347160 U CN208347160 U CN 208347160U CN 201820391240 U CN201820391240 U CN 201820391240U CN 208347160 U CN208347160 U CN 208347160U
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- Prior art keywords
- concrete
- roofing
- brick
- hoistway
- water line
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- 239000011449 brick Substances 0.000 claims abstract description 63
- 239000004567 concrete Substances 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000004831 Hot glue Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Building Environments (AREA)
Abstract
The utility model relates to the hoistway anti-leakage structures that a kind of intensive pipeline of casing cluster type goes out roofing, including PVC sheath pipe, concrete face-board for room and brick walling, PVC sheath pipe is installed in outer contour between two parties, and primary concreting of returning on reinforced concrete roof board and concrete forms；Brick walling is located on concrete top of returning, PVC sheath pipe is fixed by U-shaped snap ring with angle bar frame, it is also stayed at the top of brick walling and sets future insufficiency, vertical PPR hot-water line penetrates PVC sheath pipe below reinforced concrete roof board, lateral PPR hot-water line is connected with the solar water heater being placed on roofing after future insufficiency is pierced by respectively by 90 degree of elbows and vertical PPR hot-water line hot-melt adhesive paste.The cluster type structure install compact, wall tunnel type structure are convenient for antiseep and maintenance；Standpipe free extension does not influence waterproof layer while compensation is flexible, and the intensive standpipe root waterproof sealing of roofing out is converted to the common waterproof on the outside of hoistway and the anti-leakage structure of future insufficiency closure.
Description
Technical field
The utility model relates to building pipe installation and waterproof technology of roofing field more particularly to a kind of casing cluster type are close
Collector says the hoistway anti-leakage structure of roofing.
Background technique
With the continuous popularization and application of green building technique, solar energy is just gradually applied to building work as clean energy resource
Cheng Zhong, solar water heating system are gradually spread in residential project, and vacuum pipe solar water heater focuses mostly on and is mounted on room
On face, to avoid blocking for shade or front-seat heat collector, reflected light is avoided to cause light pollution to nearby buildings.In house work
In Cheng Jianshe, for branch control and household metering, each household one PPR flow riser's majority is installed concentratedly hygienic indoors
Between narrow corners, and roofing is extended perpendicularly out with intensive tube shaped and is connected respectively with solar water heater.
When stretching out cast-in-situ steel reinforced concrete roof boarding, if the pre-buried casing of every PPR pipe, casing is large number of, accounts for
With space is big, installation effectiveness is low；Water proof roofing sheet is difficult to wrap up the gap between all casings especially casing, Yi Zao simultaneously
At roof draining rain；In addition, since the water temperature in PPR hot-water line is high, dilatation of the PPR pipe in casing is big, so that in casing
Sealing compound tears and leaks.Since Pipe installing, civil engineering, waterproof construction mutually intert, interacts, PPR hot-water line is caused to pacify
It is serious to fill the problems such as difficulty is big, the inside and outside roof leaking of numerous casings, roof leakage.
Summary of the invention
Technical problem to be solved by the utility model is to provide the hoistways that a kind of intensive pipeline of casing cluster type goes out roofing
Anti-leakage structure, the cluster type structure install compact, wall tunnel type structure are convenient for antiseep and maintenance；Standpipe while compensation is flexible
Free extension does not influence waterproof layer, by the intensive standpipe root waterproof sealing of roofing out be converted to common waterproof on the outside of hoistway and
The anti-leakage structure that future insufficiency blocks.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing, including PVC sheath pipe, concrete roof
It returns on plate, concrete, brick walling and armored concrete removable cover, the PVC sheath pipe is installed between two parties need to be pierced by room
In the rectangle outer contour of the PPR hot-water line corresponding position in face, and it is fixed on end template, the template returned on the concrete
It hangs mould along rectangle outer contour to install, primary concreting of returning on reinforced concrete roof board and concrete forms；It is described brick
The borehole wall is located on the concrete top of returning, and its inside is concordant with returning on the concrete, and outside brick is grown 60mm, institute
It states and is embedded with angle bar frame in brick walling, the PVC sheath pipe is fixed by a U-shaped snap ring with the angle bar frame,
The top of the brick walling, which is also stayed, sets a future insufficiency, and the future insufficiency bottom surface is low inside and high outside flowing water slope, described
The outside brick of brick walling, which is grown, is additionally provided with drip at position；Several vertical PPR hot-water lines are from the reinforced concrete
It is penetrated below earth house panel in the PVC sheath pipe, and the PVC sheath pipe at least 100mm, lateral PPR are exposed in top
Hot-water line by 90 degree elbows and vertical PPR hot-water line hot-melt adhesive paste, and after the future insufficiency is pierced by respectively with placement
Solar water heater on roofing is connected；The armored concrete removable cover is placed in the brick walling.
The technical solution of the utility model further includes that the top of the armored concrete removable cover is four sides slope structure,
Side also sets up drip, and the armored concrete removable cover extends outwardly compared with the periphery sides of the brick walling are long
200mm, the armored concrete removable cover thickness are 60~80mm by Bian Zhizhong.
The technical solution of the utility model further includes that mortar plastering layer is arranged on the outside of the brick walling.
The technical solution of the utility model further include be disposed on the concrete face-board for room sloping layer, insulating layer,
Screed-coat and waterproof layer, the waterproof layer return on the outside of the brick walling and along the concrete on return to brick and grow position
The bottom set.
The technical solution of the utility model further includes that the PPR hot-water line of boundling installation is integrally enclosed with rubber and plastic insulating layer.
The technical solution of the utility model further includes that the lateral PPR hot-water line being pierced by through the future insufficiency is in outer low
Interior high mode is arranged.
The technical solution of the utility model further includes the poly- ammonia in gap between the future insufficiency and transverse direction PPR hot-water line
Ester foaming agent caulking sealing.
The technical solution of the utility model further includes, as return on the concrete enclose made of hoistway and described brick
The net length and width dimensions in the inside of the borehole wall are all larger than PVC sheath pipe diameter.
Wherein, PVC sheath pipe is selectedThe pvc pipe of length 600mm~700mm.
Make forming process are as follows:
1, the unwrapping wire on the end template of cast-in-situ steel reinforced concrete roof boarding, roofing need to be pierced by by determining that indoor toilet is all
PPR standpipe corresponding position, rectangle outer contour is drawn on end template, PVC sheath pipe is placed in contour line between two parties,
It is fixed on end template；
2, after reinforcing bar has been bound, the coagulation for returning height 500mm, thickness 120mm is installed along the outstanding mould of the surrounding of contour line
The template returned on soil is returned on primary concreting reinforced concrete roof board and concrete；
3, after removing above-mentioned template, return on concrete on continue to build the brick well of height 400mm, thickness 180mm
Wall makes to return on the inside of brick walling and concrete concordant, and outside brick is grown 60mm, and angle bar frame is buried in brick walling
And use U-shaped snap ring fixing PVC protecting pipe；
4, it is stayed in borehole wall top side and sets the future insufficiency of high 100mm, width 200mm, the Waterproof sand of 1:3 is smeared on the outside of the borehole wall
Coat of plaster is starched, low inside and high outside flowing water slope is smeared into notch bottom surface, drip is smeared out in brick position of growing, successively finishes roofing and look for
After slope layer, insulating layer, screed-coat, then does waterproof layer and return to brick on returning on lateral edge concrete outside the borehole wall and grow bottom and can
By closing up；
5, PVC is penetrated below reinforced concrete roof board by root after being identified each effective label of resident PPR hot water
In protecting pipe, and expose the top at least 100mm of PVC sheath pipe, after boundling is installed, the top of vertical PPR hot-water line
Using the PPR hot-water line of 90 degree of elbow hot-melt adhesive paste transverse directions, be pierced by by the future insufficiency at the top of brick walling, respectively be placed in
Solar water heater on roofing is connected, and after the water pressure test is qualified, the PPR hot-water line installed to boundling in well is integrally wrapped up
Rubber and plastic insulating layer；
6, the periphery sides appearance of last prefabricated reinforced concrete removable cover, armored concrete removable cover and brick walling
Than the 200mm that extends outwardly, top is four sides slope, and drip is smeared out in side, and armored concrete removable cover is placed in brick walling
On, and by the gap polyurethane foams caulking sealing between future insufficiency and transverse direction PPR hot-water line.
The utility model has the beneficial effects that the utility model can select respective tube according to the actual quantity of PPR hot-water line
The PVC sheath pipe of diameter makes the interior the space occupied in addition to PPR hot-water line of PVC sheath pipe, and other remaining spaces are not less than 30%, with
Guarantee that PPR hot-water line penetrates and extracts ratio out smoothly, convenient for construction and maintenance；As return on concrete enclose made of hoistway and
In brick walling, net length and width dimensions extend 250mm compared with PVC sheath pipe diameter；The lateral PPR hot water being pierced by by future insufficiency
Pipe answer it is outer low and inner high, and future insufficiency should not towards pitched roof, prevent rainwater along PPR hot-water line flow into future insufficiency in；It is brick
Borehole wall top surface should be first levelling, and in well after the completion of installment work, armored concrete removable cover is placed to steady, removal reinforced concrete
After native removable cover, well interior conduit maintenance can be also carried out.
The intensive Pipe installing of the utility model is compact, saves space, installation efficiency height, and civil engineering, waterproof and installation intersect
Operation is few, and effective solution standpipe root waterproof construction problem, waterproof construction are simple and reliable；Intensive PPR hot-water line is flexible certainly
Such as and integral heat insulation effect is good, and when guaranteeing roofing ne-leakage, tubular service is also extremely convenient.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is utility model diagram；
Wherein, 1-PVC protecting pipe；2- reinforced concrete roof board；It returns on 3- concrete；4- brick walling；5- angle steel
Bracket；6-U shape snap ring；7- future insufficiency；8- mortar plastering layer；9- flowing water slope；10- drip；11- sloping layer；12- heat preservation
Layer；13- screed-coat；14- waterproof layer；15-PPR hot-water line；16-90 degree elbow；17- rubber and plastic insulating layer；18- armored concrete
Removable cover；19- polyurethane foams.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1 and Figure 2, a kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing, including PVC shield
Casing 1, concrete face-board for room, return on concrete 3, brick walling 4 and armored concrete removable cover 18, the PVC sheath
Pipe 1 is installed in the rectangle outer contour for 15 corresponding position of PPR hot-water line that need to be pierced by roofing between two parties, and is fixed on end template
On, return on the concrete 3 template along rectangle outer contour hang mould install, on reinforced concrete roof board 2 and concrete
3 primary concretings of returning form；The brick walling 4 is located on the concrete 3 tops of returning, and its inside and the coagulation
It returns on soil 3 concordant, outside brick is grown 60mm, angle bar frame 5 is embedded in the brick walling 4, the PVC sheath pipe 1 is logical
It crosses a U-shaped snap ring 6 to be fixed with the angle bar frame 5, the top of the brick walling 4, which is also stayed, sets a future insufficiency 7, described
7 bottom surface of future insufficiency is low inside and high outside flowing water slope 9, grows in the outside brick of the brick walling 4 and is additionally provided with drop at position
Waterline 10；Several vertical PPR hot-water lines 15 penetrate the PVC sheath pipe 1 from the lower section of the reinforced concrete roof board 2
In, and at least 100mm of PVC sheath pipe 1 is exposed at top, lateral PPR hot-water line 15 by 90 degree elbows 16 with vertically
15 hot-melt adhesive paste of PPR hot-water line, and after the future insufficiency 7 is pierced by respectively with the solar water heater phase that is placed on roofing
Connection；The armored concrete removable cover 18 is placed in the brick walling 4.
Particularly, the top of the armored concrete removable cover 18 is four sides slope structure, and side also sets up drip 10,
And the armored concrete removable cover 18 extends outwardly 200mm compared with the periphery sides of the brick walling 4 are long, the reinforcing bar
18 thickness of concrete removable cover is 60~80mm by Bian Zhizhong.
Particularly, mortar plastering layer 8 is set on the outside of the brick walling 4.
Particularly, sloping layer 11, insulating layer 12, screed-coat 13 and waterproof are disposed on the concrete face-board for room
Layer 14, the waterproof layer 14 return to brick on 3 in 4 outside of the brick walling and return along the concrete and grow the bottom of position
Portion.
Particularly, the PPR hot-water line 15 of boundling installation is whole is enclosed with rubber and plastic insulating layer 17.
Particularly, it arranges through the lateral PPR hot-water line 15 that the future insufficiency 7 is pierced by outer low and inner high mode.
Particularly, the gap between the future insufficiency 7 and transverse direction PPR hot-water line 15 is close with 19 filleting of polyurethane foams
Envelope.
Particularly, as the net length and width ruler in inside of return on the concrete hoistway made of 3 enclosings and the brick walling 4
It is very little to be all larger than 1 diameter of PVC sheath pipe.
Wherein, PVC sheath pipe 1 is selectedThe pvc pipe of length 600mm~700mm.
Make forming process are as follows: indoor health is determined in 1, the unwrapping wire on the end template of cast-in-situ steel reinforced concrete roof boarding 2
Between all PPR standpipes that need to be pierced by roofing corresponding position, rectangle outer contour is drawn on end template, PVC sheath pipe 1 is occupied
In be placed in contour line, be fixed on end template；2, it after reinforcing bar has been bound, is installed along the outstanding mould of the surrounding of contour line and returns height
Degree 500mm, thickness 120mm concrete on return 3 template, on primary concreting reinforced concrete roof board 2 and concrete
Return 3；3, it after removing above-mentioned template, returns on concrete and continues to build the brick walling of height 400mm, thickness 180mm on 3
4, make to return on the inside of brick walling 4 and concrete 3 concordant, outside brick is grown 60mm, and angle steel branch is buried in brick walling 4
Frame 5 simultaneously uses 6 fixing PVC protecting pipe 1 of U-shaped snap ring；4, it is stayed in borehole wall top side and sets the future insufficiency of high 100mm, width 200mm
7, the waterproof mortar coat of plaster 8 of 1:3 is smeared on the outside of the borehole wall, low inside and high outside flowing water slope 9 is smeared into notch bottom surface, is grown position in brick
Drip 10 is smeared out, after successively finishing roof slope making layer 11, insulating layer 12, screed-coat 13, then does waterproof layer 14 and in the borehole wall
It returns to return to brick on 3 and grow on outer lateral edge concrete and bottom and reliably close up；5, each resident PPR hot-water line 15 is marked with label
It is penetrated in PVC sheath pipe 1 by root from below reinforced concrete roof board 2 after knowledge, and exposes the top of PVC sheath pipe 1 at least
100mm, after boundling is installed, the top of vertical PPR hot-water line 15 uses the PPR of 90 degree of elbow 16 hot-melt adhesive paste transverse directions
Hot-water line 15 is pierced by by the future insufficiency 7 at 4 top of brick walling, is connected respectively with the solar water heater being placed on roofing
It connects, after the water pressure test is qualified, rubber and plastic insulating layer 17 is wrapped up to 15 entirety of PPR hot-water line that boundling in well is installed；6, last pre-
Armored concrete removable cover 18 processed, armored concrete removable cover 18 extend outwardly compared with the periphery sides of brick walling 4 are long
200mm, top are four sides slope, and drip 10 is smeared out in side, and armored concrete removable cover 18 is placed in brick walling 4, and
By gap 19 caulking sealing of polyurethane foams between future insufficiency 7 and transverse direction PPR hot-water line 15.
Technical characteristic of the utility model without description can be achieved by the prior art, and details are not described herein.Certainly, on
Stating bright is not limitations of the present invention, and the utility model is also not limited to the example above, the common skill of the art
Art personnel variation, remodeling, addition or replacement made in the essential scope of the utility model, also should belong to the utility model
Protection scope.
Claims (8)
1. the hoistway anti-leakage structure that a kind of intensive pipeline of casing cluster type goes out roofing, which is characterized in that including PVC sheath pipe,
It returns on concrete face-board for room, concrete, brick walling and armored concrete removable cover, the PVC sheath pipe are installed between two parties
It in the rectangle outer contour of PPR hot-water line corresponding position that need to be pierced by roofing, and is fixed on end template, on the concrete
The template returned is hanged mould along rectangle outer contour and is installed, return primary concreting on reinforced concrete roof board and concrete and
At；The brick walling is located on the concrete top of returning, and its inside, outside brick concordant with returning on the concrete
Grow 60mm, and angle bar frame is embedded in the brick walling, and the PVC sheath pipe passes through a U-shaped snap ring and the angle steel branch
Frame is fixed, and the top of the brick walling, which is also stayed, sets a future insufficiency, and the future insufficiency bottom surface is low inside and high outside stream
Water slope grows in the outside brick of the brick walling and is additionally provided with drip at position；Several vertical PPR hot-water lines are from institute
It states and is penetrated below reinforced concrete roof board in the PVC sheath pipe, and the PVC sheath pipe at least 100mm is exposed at top,
Lateral PPR hot-water line divides by 90 degree of elbows and vertical PPR hot-water line hot-melt adhesive paste, and after the future insufficiency is pierced by
It is not connected with the solar water heater being placed on roofing；The armored concrete removable cover is placed in the brick walling
On.
2. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In the top of the armored concrete removable cover is four sides slope structure, and side also sets up drip, and the armored concrete
Removable cover extends outwardly 200mm compared with the periphery sides of the brick walling are long, the armored concrete removable cover thickness
It is 60~80mm by Bian Zhizhong.
3. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In setting mortar plastering layer on the outside of the brick walling.
4. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In being disposed with sloping layer, insulating layer, screed-coat and waterproof layer on the concrete face-board for room, the waterproof layer is described
Brick is returned on returning on the outside of brick walling and along the concrete to grow the bottom of position.
5. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In the PPR hot-water line of boundling installation is integrally enclosed with rubber and plastic insulating layer.
6. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In the PPR hot-water line for the transverse direction being pierced by through the future insufficiency is arranged in outer low and inner high mode.
7. a kind of intensive pipeline of casing cluster type as claimed in claim 6 goes out the hoistway anti-leakage structure of roofing, feature exists
In gap polyurethane foams caulking sealing between the future insufficiency and transverse direction PPR hot-water line.
8. a kind of intensive pipeline of casing cluster type as described in claim 1 goes out the hoistway anti-leakage structure of roofing, feature exists
In, as return on the concrete enclose made of hoistway and the brick walling the net length and width dimensions in inside be all larger than PVC shield
Casing diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391240.2U CN208347160U (en) | 2018-03-22 | 2018-03-22 | A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820391240.2U CN208347160U (en) | 2018-03-22 | 2018-03-22 | A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208347160U true CN208347160U (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820391240.2U Expired - Fee Related CN208347160U (en) | 2018-03-22 | 2018-03-22 | A kind of intensive pipeline of casing cluster type goes out the hoistway anti-leakage structure of roofing |
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| Country | Link |
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| CN (1) | CN208347160U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395661A (en) * | 2020-04-22 | 2020-07-10 | 东莞市末客信息科技有限公司 | Fixing and sealing construction method and structure of splicing seam of water-meeting roof with cantilever structure |
| CN111749428A (en) * | 2020-08-05 | 2020-10-09 | 中国建筑第八工程局有限公司 | Light well closing structure and construction method |
-
2018
- 2018-03-22 CN CN201820391240.2U patent/CN208347160U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395661A (en) * | 2020-04-22 | 2020-07-10 | 东莞市末客信息科技有限公司 | Fixing and sealing construction method and structure of splicing seam of water-meeting roof with cantilever structure |
| CN111395661B (en) * | 2020-04-22 | 2021-09-21 | 东莞市末客信息科技有限公司 | Fixing and sealing construction method and structure of splicing seam of water-meeting roof with cantilever structure |
| CN111749428A (en) * | 2020-08-05 | 2020-10-09 | 中国建筑第八工程局有限公司 | Light well closing structure and construction method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |