CN105952075B - Roof boarding gutter closing in waterproof construction and roof board system - Google Patents
Roof boarding gutter closing in waterproof construction and roof board system Download PDFInfo
- Publication number
- CN105952075B CN105952075B CN201610436753.6A CN201610436753A CN105952075B CN 105952075 B CN105952075 B CN 105952075B CN 201610436753 A CN201610436753 A CN 201610436753A CN 105952075 B CN105952075 B CN 105952075B
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- China
- Prior art keywords
- roof boarding
- extension
- gutter
- flexure strip
- waterproof construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000009958 sewing Methods 0.000 claims abstract description 24
- 239000000565 sealant Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/064—Gutters
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The present invention relates to roof boarding, a kind of roof boarding gutter closing in waterproof construction is provided, including roof boarding and gutter flange, and there is connecting sewing between the two, also include drip piece and flexure strip, the piece that drips has extension and the connecting portion along roof boarding extension straight down, extending part is in the outside of gutter flange, connecting portion is stretched into connecting sewing and is fixedly connected with the lower surface of roof boarding, flexure strip is located between gutter flange and extension, the piece that drips coordinates closure connecting sewing with extension, and flexure strip is fixed on gutter flange；A kind of roof board system, including above-mentioned waterproof construction are also provided.In the present invention, connecting sewing between roof boarding and gutter flange encloses closure using the piece that drips with flexure strip, form preferable sealed environment, ensure its water resistance, simultaneously because flexure strip has preferable elastic performance, drip piece and the deformation of gutter connection gap, prevention air flow can be adapted to automatically, play windproof effect.
Description
Technical field
The present invention relates to roof boarding, more particularly to a kind of roof boarding gutter closing in waterproof construction and roof board system.
Background technology
Die mould metal Roof system because its lightweight, it is high-strength, attractive in appearance, easy for construction the features such as in airport, stadiums, exhibitions
Largely used in the heavy constructions such as center, industrial premises, storage, railroad platform awning, railway station building roofing.But because wind resistance takes off energy
Power is inadequate, and metal Roof, which is taken off the phenomenon frequency fallen by wind, generation, and the phenomenon of metal Roof infiltration also has generation frequently.
Metal Roof system cornice gutter is received at side at present, and (length direction) can be set generally between gutter and roof boarding
Elongated metal material drip piece, dripping passes through rivet interlacement between piece and gutter.Due to gap be present between rivet interlacement point,
Under strong wind weather, larger pressure difference with outer be present and cause piece vibrations of dripping in roof boarding, and then cause the vibrations of rivet, influence to connect
Reliability.Leak outside, be chronically under wet environment, easy corrosion additionally, due to rivet, influence the reliability of connection.
The content of the invention
It is an object of the invention to provide a kind of roof boarding gutter closing in waterproof construction, it is intended to for solving existing roofing
The problem of easily being seeped water at gutter in plate system, and then influenceing connective stability between gutter and roof boarding.
What the present invention was realized in：
The embodiment of the present invention provides a kind of roof boarding gutter closing in waterproof construction, including roof boarding and is arranged at the room
Gutter flange below the cornice of panel, and there is connecting sewing between the two, in addition to drip piece and flexure strip, it is described to drip
Piece has extension and the connecting portion along roof boarding extension straight down, and the extending part is in the gutter flange
Outside, the connecting portion stretches into the connecting sewing and is fixedly connected with the lower surface of the roof boarding, the flexure strip folder
Between the gutter flange and the extension, the piece that drips coordinates with the extension blocks the connecting sewing, and
The flexure strip is fixed on the gutter flange.
Further, the end of the gutter flange is with the connecting plate being oppositely arranged with the roof boarding and in described
The abutment plate that connecting plate extends downwardly close to the end of the extension, the abutment plate are oppositely arranged with the extension, and
The flexure strip part is located between the abutment plate and the extension, and another part is extended on the connecting plate and pasted
Close, and rivet between the two.
Further, the part that the flexure strip is located between the abutment plate and the extension is folded upward at into U
Shape structure, the wherein side of the U-shaped structure are bonded with the extension, and other side is fitted in the abutment plate, the U
The both sides of shape structure are oppositely arranged and have gap.
Further, by some rivet interlacements between the connecting portion and the roof boarding, each rivet is by institute
State and the connecting sewing is connected on the inside of roof boarding.
Further, the plug for blocking the cornice is set on the inside of the roof boarding, and each rivet is respectively positioned on plug
Inner side.
Further, the back-off upwardly extended is provided with the bottom of the extension, the back-off is located at the elasticity
The lower section of piece.
Further, in being coated with matcoveredn on the outer surface of the piece that drips.
Further, the extension protrudes the lower end of the flexure strip and the bottom of the extension is close to the gutter
Bottom surface.
Further, the upper end of the extension contacts with the lower surface of the roof boarding, both shapes at contact position
Into turning, sealant is packed with towards the side of the cornice in the turning.
The embodiment of the present invention also provides a kind of roof board system, including above-mentioned roof boarding gutter closing in waterproof construction.
The invention has the advantages that：
In the waterproof construction of the present invention, there is connecting sewing between the upper end of roof boarding and gutter flange, a piece part of dripping
Be extended along the lower surface of roof boarding, a part extends downwardly settings by the lower surface of roof boarding, while in gutter flange and
Flexure strip is folded between extension, so as to form the closure to above-mentioned connecting sewing.In said structure, drip piece
Connecting portion is stretched into connecting sewing, and it has larger connection area, thus difficulty that rainwater penetrates between roof boarding lower surface
It is very big, while can play a part of protecting the connector between piece and roof boarding that drips, it will not be ensured to drip by cargo sweat
The stability connected between piece and roof boarding, and by clamping flexure strip between extension and gutter flange, flexure strip has
Preferable elastic performance, drip piece and the deformation of gutter connection gap, prevention air flow can be adapted to automatically, this waterproof construction is existed
Also there is preferable water resistance, structural stability is high, and then can ensure the service life of roof board system at this.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of roof boarding gutter closing in waterproof construction provided in an embodiment of the present invention；
Fig. 2 is enlarged drawing at A in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of gutter closing in waterproof construction of roof boarding 1, and it is mainly applied
At the cornice 11 and gutter of roof boarding 1, include roof boarding 1 and gutter flange 2, gutter flange 2 is located under roof boarding 1
Side and its close position of cornice 11, have connecting sewing 3, waterproof construction between the upper end of gutter flange 2 and the lower surface of roof boarding 1
Also include drip piece 4 and flexure strip 5, the piece 4 that drips coordinates the closure that can be formed to above-mentioned connecting sewing 3, tool with flexure strip 5
Body includes extension 41 and the two-part structure of connecting portion 42 for the piece 4 that drips, and extension 41 is located at gutter flange 2 close to roof boarding
The side of 1 cornice 11, it is extended and formed straight down by the lower surface of roof boarding 1, and connecting portion 42 is then along the following table of roof boarding 1
Face extends to be formed, and it is bonded with the lower surface of roof boarding 1 and stretched into the connecting sewing 3 between roof boarding 1 and gutter flange 2, when
So the drip extension 41 of piece 4 and connecting portion 42 is formed as one, and both are L-shaped bending structure, its by connecting portion 42 and
Being fixedly connected between the lower surface of roof boarding 1 is installed on roof boarding 1, and flexure strip 5 is then to be located in gutter flange 2 and extension
Between portion 41, its side is bonded with gutter flange 2, and side is bonded with extension 41, passes through flexure strip 5 and extension 41 to this
Closure of the effect formation to above-mentioned connecting sewing 3 is enclosed, flexure strip 5 is fixed on gutter flange 2 in addition.In the present invention, flexure strip 5
It is elongated structure with the piece 4 that drips, the connecting sewing 3 between corresponding roof boarding 1 and gutter flange 2, when rain, due to dripping
The connecting portion 42 of piece 4 is bonded the lower surface of roof boarding 1, is difficult to thus to even with larger contact area, rainwater between the two
The side of seam 3 is permeated, and because connecting portion 42 is stretched into connecting sewing 3, then rainwater is difficult to its connector between roof boarding 1
Corrosion is formed, the connection dripped between piece 4 and roof boarding 1 is more stable, and resistance is formed additionally, due to the extension 41 for the piece 4 that drips
Gear, most of rainwater can be wandered to the bottom surface of gutter along extension 41, and even if when thering is the small part rainwater to enter its inner side,
Good waterproof effect can also be formed under the plugging action of flexure strip 5.Flexure strip 5 is made of plastic material, its own tool
There is certain elasticity, drip piece 4 and the deformation of the gap of gutter connecting sewing 3, prevention air flow can be adapted to automatically, there is wind-proof performance,
But also it is possible to prevente effectively from because wind-force causes connective stability between connecting portion 42 and roof boarding 1 to the effect of extension 41
Influence, ensure the stability of structure.
Referring specifically to Fig. 2, optimize above-described embodiment, bending extension is carried out to gutter flange 2, so that gutter flange 2
Towards the end of extension 41 formed with connecting plate 21 and abutment plate 22, connecting plate 21 is oppositely arranged with roof boarding 1 and to prolonging
Extending portion 41 stretches, and abutment plate 22 is then to be downwardly extending by connecting plate 21 close to the end of extension 41, abutment plate 22 with
The extension 41 of piece 4 of dripping is oppositely arranged, and for this structure, flexure strip 5 is bent, one part is located in abutment plate
Between 22 and extension 41, and another part is then extended on the upper surface of connecting plate 21, and it is bonded and used with connecting plate 21
Riveting is fixed.In the present embodiment, gutter flange 2 is subjected to bending process so that its upper end approximation is in reverse U shape, flexure strip 5 one
Part-structure is bonded with abutment plate 22, and a part of structure is bonded with connecting plate 21 so that flexure strip 5 and gutter flange 2 it
Between connection fitting it is relatively close, can effectively avoid flexure strip 5 from producing air flow with gutter flange 2.
Continue to optimize above-described embodiment, the part-structure that flexure strip 5 is located between abutment plate 22 and extension 41 is upward
U-shaped structure 51 is bent to form, the wherein side of the U-shaped structure 51 is bonded with extension 41, and other side fits in abutment plate 22
On, the both sides of U-shaped structure 51 are oppositely arranged and have gap.In the present embodiment, flexure strip 5 is on the basis of above-mentioned bending structure
The structure being located in it between abutment plate 22 and extension 41 continues bending process, the U-shaped structure 51 formed after bending
Both sides are bonded abutment plate 22 and extension 41 respectively, due to having gap between structure on two sides, that is, are not in contact with each other, so as to increase
Strong elasticity piece 5 is located in the elasticity between abutment plate 22 and extension 41, and can further improve the adaptive of waterproof construction should be able to
Power, wind-proof performance is more preferable, while can weaken wind-force to shaking caused by extension 41, ensure connecting portion 42 and roof boarding 1 it
Between connective stability.Still further aspect, abutment plate 22 with and its part of flexure strip 5 for being bonded also using riveting, flexure strip 5
Gap between the both sides of U-shaped structure 51, may be such that rivet can sequentially pass through abutment plate 22 and flexure strip 5 and not with extension
41 contacts, and are connected without perforate on extension 41 using connector with flexure strip 5, and the piece 4 that drips can be effectively ensured in prolonging
Water resistance at extending portion 41, at the same flexure strip 5 U-shaped structure 51 compared with strong elasticity in the presence of, flexure strip 5 can stablize support
Peak on extension 41.In said structure, there is riveted joint structure at two, and do not have between flexure strip 5 and gutter flange 2
It is directly exposed under rainy day environment, rivet will not be loosened by humid environment corrosion, and connective stability is high.
Further, by some rivet interlacements between connecting portion 42 and roof boarding 1, each rivet is by roof boarding 1
Side is connected in connecting sewing 3.Present embodiment discloses the riveted structure dripped between piece 4 and roof boarding 1, rivet one end is located at room
The inner side of panel 1, one end are located in connecting sewing 3, under normal circumstances will not be by raindrop erosion, and usually in roof boarding 1
Side is also provided with plug 12, and the cornice 11 of roof boarding 1 is blocked by plug 12, and rainwater is difficult to enter roof boarding through cornice 11
1 inner side, the i.e. inner side of roof boarding 1 are a more closed space, each rivet are arranged at into the inner side of plug 12, you can ensure
The good JA(junction ambient) of rivet, the reliability connected between piece 4 and roof boarding 1 of dripping are very high.
Further, the back-off 43 upwardly extended is provided with the bottom of extension 41, and the back-off 43 is located at flexure strip 5
Lower section.In the present embodiment, back-off 43 is arranged at extension 41 towards the side of gutter flange 2, and extends obliquely, works as rainwater
When being slid downwards along extension 41, rainwater is difficult to move obliquely along back-off 43 under gravity, so that rainwater is difficult to
Back-off 43 is flow to towards the inner side of flexure strip 5, further increases the water resistance of waterproof construction.Usually, along vertically to
Under the bottom of direction extension 41 to protrude the lower end of flexure strip 5, and its bottom should be close to the bottom surface of gutter.The court of extension 41
The projected area of the direction of flexure strip 5 is much larger than to the projected area of gutter flange 2, extension 41 plays more preferable dash and made
With rainwater is difficult to largely enter gutter flange 2 and dripped in the space that piece 4 encloses.
Further, matcoveredn (not shown) is coated with the outer surface for dripping piece 4.Usually, in the piece 4 that drips
Outer surface on carry out coating protective, draw due to dripping one side of the extension 41 of piece 4 away from flexure strip 5 for main rainwater
Guide face, matcoveredn at least should be coated with the surface of extension 41 to this, with the extension 41 for the piece 4 that avoids dripping by rainwater
Corrosion, improves its service life.For said structure, the contact position in the upper end of extension 41 and the lower surface of roof boarding 1
Sealant 44 is packed with, the specially upper end of extension 41 and the lower surface contact position of roof boarding 1 forms turning, and in turning court
Above-mentioned sealant 44 is packed with to the side of 1 cornice of roof boarding 11, seam is contacted even if dripping this to have between piece 4 and roof boarding 1
During gap, under the plugging action of sealant 44, it can also avoid rainwater infiltration from dripping between piece 4 and roof boarding 1.
Referring to Fig. 1, the embodiment of the present invention also provides a kind of roof board system, includes above-mentioned waterproof construction.This implementation
In example, above-mentioned waterproof construction is directly applied in roof board system, both can be single-layer roof plate for roof board system
System, or double-deck roof board system, its gutter opening position is provided with the waterproof construction, not only can be to roof boarding system
System forms preferable waterproof ability, while can also strengthen its wind loading rating, and the structural stability of roof board system in this place is high.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
1. a kind of roof boarding gutter closing in waterproof construction, including roof boarding and the day that is arranged at below the cornice of the roof boarding
Ditch flange, and there is connecting sewing between the two, it is characterised in that：Also include drip piece and flexure strip, the piece that drips has
Extension and the connecting portion along roof boarding extension straight down, the extending part is in the outer of the gutter flange
Side, the connecting portion are stretched into the connecting sewing and are fixedly connected with the lower surface of the roof boarding, and the flexure strip is located in
Between the gutter flange and the extension, the piece that drips coordinates with the extension blocks the connecting sewing, and described
Flexure strip is fixed on the gutter flange.
2. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：The end tool of the gutter flange
There is a connecting plate being oppositely arranged with the roof boarding and extended downwardly in the connecting plate close to the end of the extension
Abutment plate, the abutment plate are oppositely arranged with the extension, and the flexure strip part is located in the abutment plate and institute
Between stating extension, another part is extended on the connecting plate and is bonded, and is riveted between the two.
3. roof boarding gutter closing in waterproof construction as claimed in claim 2, it is characterised in that：The flexure strip is located in described
Part between abutment plate and the extension is folded upward at into U-shaped structure, wherein side and the extension of the U-shaped structure
Portion is bonded, and other side is fitted in the abutment plate, and the both sides of the U-shaped structure are oppositely arranged and have gap.
4. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：The connecting portion and the roofing
By some rivet interlacements between plate, each rivet on the inside of the roof boarding by being connected to the connecting sewing.
5. roof boarding gutter closing in waterproof construction as claimed in claim 4, it is characterised in that：Envelope is set on the inside of the roof boarding
The plug of the cornice is blocked up, each rivet is respectively positioned on the inner side of plug.
6. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：Set in the bottom of the extension
The back-off upwardly extended is equipped with, the back-off is located at the lower section of the flexure strip.
7. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：In the outer surface of the piece that drips
On be coated with matcoveredn.
8. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：The extension protrudes the bullet
The lower end of the property piece and bottom of the extension is close to the bottom surface of the gutter.
9. roof boarding gutter closing in waterproof construction as claimed in claim 1, it is characterised in that：The upper end of the extension and institute
The lower surface contact of roof boarding is stated, both form turning at contact position, are filled out in the turning towards the side of the cornice
It is plugged with sealant.
A kind of 10. roof board system, it is characterised in that：Closed up including the roof boarding gutter as described in claim any one of 1-9
Waterproof construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436753.6A CN105952075B (en) | 2016-06-17 | 2016-06-17 | Roof boarding gutter closing in waterproof construction and roof board system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436753.6A CN105952075B (en) | 2016-06-17 | 2016-06-17 | Roof boarding gutter closing in waterproof construction and roof board system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105952075A CN105952075A (en) | 2016-09-21 |
| CN105952075B true CN105952075B (en) | 2018-04-10 |
Family
ID=56906148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610436753.6A Active CN105952075B (en) | 2016-06-17 | 2016-06-17 | Roof boarding gutter closing in waterproof construction and roof board system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105952075B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300319A (en) * | 1979-10-09 | 1981-11-17 | New Stone, Inc. | Building eaves shield |
| US4713915A (en) * | 1984-08-27 | 1987-12-22 | Sweers Ronald L | Edge clip for an eaves trough mounting adapter |
| DE102007008503A1 (en) * | 2007-02-21 | 2008-08-28 | Britten, Wolfgang | Rain water profile or passage profile for use in balconies, terraces and flat roofs, has support and attachment limb, horizontal projecting limb, stop limb, aquifer system limb, and vertical limb with gutter connection device |
| CN201722943U (en) * | 2010-04-02 | 2011-01-26 | 西安建筑科技大学 | Cornice structure for modifying old industrial factory building |
| CN203669179U (en) * | 2013-11-29 | 2014-06-25 | 中色科技股份有限公司 | Joint structure of steel roof at longitudinal and transverse striding position of steel structure factory building |
| US8959853B2 (en) * | 2012-08-07 | 2015-02-24 | David Bortell | Mounting system for a gasket which prevents water and moisture infiltration of the fascia region of a roof |
| CN205777162U (en) * | 2016-06-17 | 2016-12-07 | 中铁第四勘察设计院集团有限公司 | Roof boarding gutter closing in waterproof construction and roof board system |
-
2016
- 2016-06-17 CN CN201610436753.6A patent/CN105952075B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300319A (en) * | 1979-10-09 | 1981-11-17 | New Stone, Inc. | Building eaves shield |
| US4713915A (en) * | 1984-08-27 | 1987-12-22 | Sweers Ronald L | Edge clip for an eaves trough mounting adapter |
| DE102007008503A1 (en) * | 2007-02-21 | 2008-08-28 | Britten, Wolfgang | Rain water profile or passage profile for use in balconies, terraces and flat roofs, has support and attachment limb, horizontal projecting limb, stop limb, aquifer system limb, and vertical limb with gutter connection device |
| CN201722943U (en) * | 2010-04-02 | 2011-01-26 | 西安建筑科技大学 | Cornice structure for modifying old industrial factory building |
| US8959853B2 (en) * | 2012-08-07 | 2015-02-24 | David Bortell | Mounting system for a gasket which prevents water and moisture infiltration of the fascia region of a roof |
| CN203669179U (en) * | 2013-11-29 | 2014-06-25 | 中色科技股份有限公司 | Joint structure of steel roof at longitudinal and transverse striding position of steel structure factory building |
| CN205777162U (en) * | 2016-06-17 | 2016-12-07 | 中铁第四勘察设计院集团有限公司 | Roof boarding gutter closing in waterproof construction and roof board system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105952075A (en) | 2016-09-21 |
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