Temporary covering system and method for building construction

Abstract

The invention relates to the technical field of building construction, in particular to a temporary covering system and method for building construction, the temporary covering system comprises a peripheral surrounding mechanism and a top covering mechanism, a scaffold is continuously built along the periphery of a building, the top end of the scaffold is higher than the highest point of the building, and a first dense mesh is fully hung on the outer side of the scaffold; the two ends of the transverse steel inhaul cables are fixedly connected to the top ends of scaffolds on the left side and the right side of a building correspondingly, and the two ends of the longitudinal steel inhaul cables are fixedly connected to the top ends of scaffolds on the front side and the rear side of the building correspondingly. The second dense meshes are fixedly connected to the multiple transverse steel inhaul cables and the multiple longitudinal steel inhaul cables correspondingly and used for sealing the space above the building. The outer side of the scaffold is connected with an inclined supporting piece and a ground anchor assembly which are used for improving the stability of the scaffold. The temporary covering system is convenient to construct, low in cost, safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a temporary covering system and method for building construction. Background Technology

[0002] When carrying out renovations or alterations to important or sensitive buildings, such as precious cultural relics, temporary covering measures are essential to maintain the building's privacy and prevent outsiders from stealing sensitive information through surreptitious or aerial photography. However, current covering solutions on the market have significant drawbacks. Some solutions involve complex construction processes, requiring substantial manpower and resources, resulting in extremely low construction efficiency; others use expensive materials and complex processes, leading to excessively high costs and placing a heavy economic burden on the project; still others fail to meet safety and reliability standards, making them vulnerable to strong winds, heavy rains, or other unforeseen circumstances. Therefore, the development of a convenient, cost-effective, and reliable temporary covering system is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a temporary covering system and method for building construction, so as to solve the technical problems existing in the background art.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A temporary covering system for building construction includes: a perimeter enclosure and a top covering mechanism. The perimeter enclosure includes scaffolding and a first type of dense mesh netting. The scaffolding is continuously erected around the perimeter of the building, with its top end higher than the highest point of the building. The outer side of the scaffolding is fully covered with the first type of dense mesh netting. The top covering mechanism includes: horizontal steel cables, longitudinal steel cables, and a second type of dense mesh netting. Several horizontal and longitudinal steel cables are evenly spaced. The two ends of the horizontal steel cables are fixedly connected to the top ends of the scaffolding on the left and right sides of the building, respectively. The two ends of the longitudinal steel cables are fixedly connected to the top ends of the scaffolding on the front and rear sides of the building, respectively. The second type of dense mesh netting is fixedly connected to the horizontal and longitudinal steel cables to enclose the space above the building. The outer side of the scaffolding is connected to diagonal supports and ground anchors to improve the stability of the scaffolding.

[0005] Furthermore, the scaffolding includes: uprights, discs, longitudinal members, horizontal members, interlocking rings, and footboards. Several uprights are provided, surrounding the building. Several discs are coaxially and evenly spaced along the height of each upright. Each disc has several eyelets. Both ends of the longitudinal and horizontal members have two interlocking rings. The longitudinal members connect to the corresponding eyelets on two discs of two adjacent longitudinal uprights via the two interlocking rings at their ends. Similarly, the horizontal members connect to the corresponding eyelets on two adjacent transverse uprights via the two interlocking rings at their ends. Footboards are attached to the tops of several longitudinal members at the same height. The bottom of each upright is fixed to the ground, and the top of each upright is higher than the highest point of the building.

[0006] Furthermore, it also includes: binding ropes, of which several binding ropes are provided, and the dense mesh netting is bound and fixed to several discs on several uprights on the outer side by several binding ropes, the density of the dense mesh netting being 2000 meshes / 100cm. 2 .

[0007] Furthermore, the two ends of the transverse steel cable are respectively fixedly connected to two discs on the top of two opposing uprights on the inner side of the scaffolding on the left and right sides of the building; the two ends of the longitudinal steel cable are respectively fixedly connected to two discs on the top of two opposing uprights on the inner side of the scaffolding on the front and rear sides of the building.

[0008] Furthermore, it also includes: connectors, which are clamp-type buckles, and several connectors are provided. The second type of dense mesh netting is fixedly connected to several transverse steel cables and several longitudinal steel cables by several clamp-type buckles; the density of the second type of dense mesh netting is 2000 meshes / 100cm. 2 .

[0009] Furthermore, the transverse and longitudinal steel cables are made of the same material and are both high-strength galvanized steel strands; among the several connectors connected to the same transverse or longitudinal steel cable, the distance between two adjacent connectors is 20cm.

[0010] Furthermore, several inclined support members are evenly spaced on the outside of the scaffold. Each inclined support member includes: a first horizontal support rod, a second horizontal support rod, a cross buckle, a first diagonal brace, and a second diagonal brace. Ten cross buckles are provided. One end of the first horizontal support rod is fixed to the lower part of the scaffold by two cross buckles. One end of the second horizontal support rod is fixed to the lower middle part of the scaffold by two cross buckles. Both ends of the first diagonal brace are fixed to the first and second horizontal support rods by two cross buckles respectively. Both ends and the middle part of the second diagonal brace are fixed to the first horizontal support rod, the scaffold, and the second horizontal support rod by three cross buckles respectively. The inclination angle of the first diagonal brace is smaller than that of the second diagonal brace. The inclination angles of the first and second diagonal braces are 45° to 60°.

[0011] Furthermore, the inclined support also includes: a vertical connecting rod, a base plate, and anchor bolts. The side of the horizontal support rod away from the scaffold is fixed to the vertical connecting rod by a cross buckle. The bottom end of the vertical connecting rod is fixedly connected to the base plate, and the base plate is anchored to the ground by anchor bolts.

[0012] Furthermore, several ground anchor components are evenly spaced on the outside of the scaffold. Each ground anchor component includes a wire rope and a reinforcing bar. The reinforcing bar is longer than 2m, has a diameter of 20mm, and is buried 1.5m deep underground. One end of the wire rope is fixedly connected to the upper part of the reinforcing bar that is exposed above the ground, and the other end of the wire rope is fixedly connected to the scaffold. The inclination angle of the wire rope is 30°~45°.

[0013] A temporary covering method for building construction, employing a temporary covering system for building construction, specifically includes the following steps: Step 1: Before construction begins, develop a detailed scaffolding erection plan based on the building's dimensions and construction requirements; according to the plan, prepare the scaffolding, dense mesh netting (type 1), diagonal supports, horizontal steel cables, vertical steel cables, dense mesh netting (type 2), and ground anchor components; Step 2: Erect scaffolding according to the plan requirements; after the scaffolding is erected, install the diagonal support components, then bury the reinforcing bars into the ground to the specified depth, use wire ropes to connect the scaffolding to the reinforcing bars, and adjust the tension of the wire ropes to initially reinforce the scaffolding; Step 3: Fully hang the dense mesh netting on the outside of the scaffolding, starting from the bottom and working upwards. Use binding ropes to secure the dense mesh netting to the scaffolding tightly, ensuring that the dense mesh netting has no gaps or wrinkles, and complete the installation of the four-sided protective structure. Step 4: Install horizontal and vertical steel cables at the top of the scaffolding. Securely connect both ends of the horizontal and vertical steel cables to the top of the scaffolding. Adjust the tension of the horizontal and vertical steel cables to ensure they are taut. Then, fix the dense mesh netting to the horizontal and vertical steel cables using connectors. Adjust the position of the dense mesh netting to completely cover the top of the building, forming a closed space.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The installation of mesh netting type 1 and mesh netting type 2, as well as the setting of horizontal and vertical steel cables, in the temporary covering system for building construction provided by this invention are simple, requiring no special construction equipment or complex construction techniques, greatly improving construction efficiency and significantly shortening the construction cycle. The scaffolding, mesh netting type 1, and mesh netting type 2 used in this invention are commonly used materials in building construction and are relatively inexpensive. Utilizing existing scaffolding as the main structure reduces the procurement and processing costs of additional materials. Furthermore, the simple construction process reduces labor costs, and the overall cost is far lower than some complex covering schemes, saving a significant amount of money for the project. The scaffolding in this invention, as the main load-bearing structure, combined with diagonal supports and ground anchor components, can withstand large loads and external forces. The horizontal and vertical steel cables have high strength, providing reliable support for the top covering. Mesh netting type 1 and mesh netting type 2 not only block the view but also have certain wind and rain protection functions. The entire system can operate safely and reliably in various complex environments, effectively protecting the safety of important or sensitive buildings during construction. Attached Figure Description

[0015] Figure 1 This is a top view of the temporary covering system for building construction provided by the present invention; Figure 2 This is a transverse longitudinal sectional view of the temporary covering system for building construction provided by the present invention; Figure 3 This is a structural schematic diagram of the scaffolding and inclined support components in this invention; Figure 4 This is a partial structural diagram of the scaffolding in this invention.

[0016] The labels in the attached diagram are as follows: 1-scaffolding, 101-upright pole, 102-disc, 103-longitudinal bar, 104-horizontal bar, 105-disc buckle, 106-scaffold board, 2-dense mesh netting one, 3-diagonal support component, 301-horizontal support rod one, 302-horizontal support rod two, 303-cross buckle, 304-diagonal bar one, 305-diagonal bar two, 306-vertical connecting rod, 307-base plate, 308-anchor bolt, 4-horizontal steel cable, 5-longitudinal steel cable, 6-dense mesh netting two. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] See Figures 1-4 As shown, a temporary covering system for building construction includes: a perimeter enclosure mechanism and a top covering mechanism. The perimeter enclosure mechanism includes: scaffolding 1 and dense mesh netting 2. The scaffolding 1 is continuously erected around the perimeter of the building, and the top of the scaffolding 1 is higher than the highest point of the building. The outer side of the scaffolding 1 is fully covered with dense mesh netting 2. The top covering mechanism includes: horizontal steel cables 4, longitudinal steel cables 5, and dense mesh netting 6. Several horizontal steel cables 4 and several longitudinal steel cables 5 are equally spaced. The two ends of several horizontal steel cables 4 are fixedly connected to the top of the scaffolding 1 on the left and right sides of the building, respectively. The two ends of several longitudinal steel cables 5 are fixedly connected to the top of the scaffolding 1 on the front and rear sides of the building, respectively. Dense mesh netting 6 is fixedly connected to several horizontal steel cables 4 and several longitudinal steel cables 5 to enclose the space above the building. The outer side of the scaffolding 1 is connected to inclined support members 3 and ground anchor components to improve the stability of the scaffolding 1.

[0019] Scaffolding 1 includes: uprights 101, discs 102, longitudinal members 103, horizontal members 104, interlocking buckles 105, and scaffold boards 106. Several uprights 101 are provided, surrounding the building. Several discs 102 are coaxially and evenly spaced along the height of each upright 101. Each disc 102 has several eyelets. Two interlocking buckles 105 are provided at both ends of the longitudinal members 103 and horizontal members 104. The longitudinal members 103 pass through two interlocking buckles 105 at both ends. The disc buckle 105 is fastened to the two corresponding holes on the two discs 102 on two longitudinally adjacent uprights 101 respectively. The horizontal bar 104 is fastened to the two corresponding holes on the two transversely adjacent uprights 101 respectively through the two disc buckles 105 at both ends. The tops of several longitudinal bars 103 at the same height are all covered with scaffold boards 106. The bottom of the uprights 101 is fixedly connected to the ground, and the top height of the uprights 101 is 2m higher than the height of the highest point of the building.

[0020] The temporary covering system for building construction also includes: binding ropes, of which several binding ropes are provided, and the dense mesh netting 2 is bound and fixed to several discs 102 on several uprights 101 on the outside by the binding ropes. The density of the dense mesh netting 2 is 2000 meshes / 100cm. 2 The dense mesh netting 2 can block the view around the building and has a certain degree of wind and rain protection.

[0021] The two ends of the transverse steel cable 4 are respectively fixedly connected to the two discs 102 on the top of the two uprights 101 that are set opposite to each other on the inner side of the scaffolding 1 on the left and right sides of the building; the two ends of the longitudinal steel cable 5 are respectively fixedly connected to the two discs 102 on the top of the two uprights 101 that are set opposite to each other on the inner side of the scaffolding 1 on the front and rear sides of the building.

[0022] The temporary covering system used for building construction also includes: connectors, which are clamp-type clips, and several connectors are provided. The dense mesh 26 is fixedly connected to several transverse steel cables 4 and several longitudinal steel cables 5 by several clamp-type clips; the density of the dense mesh 26 is 2000 mesh / 100cm. 2 The transverse steel cable 4 and the longitudinal steel cable 5 are made of the same material and are both high-strength galvanized steel strands with a diameter of 12mm; among the several connectors connected to the same transverse steel cable 4 or the same longitudinal steel cable 5, the spacing between two adjacent connectors is 20cm; the transverse steel cable 4 and the longitudinal steel cable 5 have high strength and provide reliable support for the top cover.

[0023] Several diagonal support members 3 are evenly spaced on the outside of the scaffold 1. The diagonal support members 3 include: a first horizontal support rod 301, a second horizontal support rod 302, a cross buckle 303, a first diagonal rod 304, and a second diagonal rod 305. Ten cross buckles 303 are provided. One end of the first horizontal support rod 301 is fastened to the lower part of the scaffold 1 by two cross buckles 303. One end of the second horizontal support rod 302 is fastened to the lower middle part of the scaffold 1 by two cross buckles 303. At the designated location, the two ends of the first diagonal brace 304 are respectively fastened and fixed to the first horizontal support rod 301 and the second horizontal support rod 302 by two cross buckles 303. The two ends and the middle part of the second diagonal brace 305 are respectively fastened and fixed to the first horizontal support rod 301, scaffold 1 and the second horizontal support rod 302 by three cross buckles 303. The inclination angle of the first diagonal brace 304 is smaller than that of the second diagonal brace 305. The inclination angles of the first diagonal brace 304 and the second diagonal brace 305 are 45°~60°.

[0024] The inclined support 3 also includes: a vertical connecting rod 306, a base plate 307, and anchor bolts 308. The side of the horizontal support rod 301 away from the scaffold 1 is fastened to the vertical connecting rod 306 by a cross buckle 303. The bottom end of the vertical connecting rod 306 is fixedly connected to the base plate 307, and the base plate 307 is anchored to the ground by anchor bolts 308.

[0025] Several ground anchor components are evenly spaced on the outside of scaffold 1. The ground anchor components include: wire rope and steel bar. The steel bar is longer than 2m, has a diameter of 20mm, and is buried 1.5m deep in the ground. One end of the wire rope is fixedly connected to the upper part of the steel bar that is exposed above the ground, and the other end of the wire rope is fixedly connected to scaffold 1. The inclination angle of the wire rope is 30°~45°.

[0026] A temporary covering method for building construction specifically includes the following steps: Step 1: Before construction begins, develop a detailed scaffolding erection plan based on the building's dimensions and construction requirements; according to the plan, prepare scaffolding 1, dense mesh netting 1, diagonal support components 3, horizontal steel cables 4, longitudinal steel cables 5, dense mesh netting 2, and ground anchor components. Step 2: Erect scaffolding 1 according to the plan requirements; after scaffolding 1 is erected, install the inclined support 3, then bury the steel bars into the ground to the specified depth, use steel wire ropes to connect the scaffolding to the steel bars, and adjust the tension of the steel wire ropes to initially reinforce scaffolding 1. Step 3: Fully hang dense mesh netting 2 on the outside of scaffold 1, and install it from bottom to top. Use binding ropes to firmly fix dense mesh netting 2 to scaffold 1, ensuring that dense mesh netting 2 has no gaps or wrinkles, and complete the installation of the four-sided protective structure. Step 4: Install horizontal steel cables 4 and vertical steel cables 5 at the top of scaffold 1. Securely connect both ends of the horizontal steel cables 4 and vertical steel cables 5 to the top of the scaffold. Adjust the tension of the horizontal steel cables 4 and vertical steel cables 5 to ensure they are taut. Then, fix the dense mesh netting 6 to the horizontal steel cables 4 and vertical steel cables 5 using connectors. Adjust the position of the dense mesh netting to completely cover the top of the building, forming a closed space.

[0027] During construction, regularly check the connection of the inclined support 3, ground anchor components, transverse steel cables 4 and longitudinal steel cables 5 to ensure that the connection is firm; check whether the dense mesh netting 1 2 and dense mesh netting 2 6 are damaged or loose, and repair or replace them in time if there are any problems; depending on the weather conditions, if there is strong wind, rain or other severe weather, reinforce the temporary covering system in advance to ensure the safe and reliable operation of the entire system.

[0028] Throughout the construction process, the temporary covering system effectively prevented unauthorized photography and aerial photography, protecting the privacy of the ancient building. Simultaneously, the system performed stably against the local typical winds of force 5-6, without any safety issues. Construction workers were able to carry out the work safely and efficiently within the enclosed space, shortening the construction period compared to the original plan and reducing costs compared to other covering solutions.

[0029] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the technical solution of the present invention, based on the technical essence of the present invention, shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A temporary covering system for building construction, characterized in that, include: The surrounding protective structure and the top covering structure include: scaffolding (1) and dense mesh netting (2). The scaffolding (1) is continuously erected around the perimeter of the building, and the top of the scaffolding (1) is higher than the highest point of the building. The outer side of the scaffolding (1) is fully covered with dense mesh netting (2). The top covering structure includes: horizontal steel cables (4), longitudinal steel cables (5), and dense mesh netting (6). The horizontal steel cables (4) and the longitudinal steel cables (5) are each provided with several layers at equal intervals. Several transverse steel cables (4) are fixedly connected at both ends to the top of the scaffolding (1) on the left and right sides of the building, and several longitudinal steel cables (5) are fixedly connected at both ends to the top of the scaffolding (1) on the front and rear sides of the building. The dense mesh net (6) is fixedly connected to several transverse steel cables (4) and several longitudinal steel cables (5) to enclose the space above the building. The outer side of the scaffolding (1) is connected to inclined support members (3) and ground anchor components to improve the stability of the scaffolding (1).

2. A temporary covering system for building construction according to claim 1, characterized in that: The scaffolding (1) includes: uprights (101), discs (102), longitudinal members (103), horizontal members (104), interlocking buckles (105), and scaffold boards (106). Several uprights (101) are provided, surrounding the building. Several discs (102) are coaxially and evenly spaced along the height of each upright (101). Several eyelets are provided on each disc (102). Two interlocking buckles (105) are provided at both ends of each longitudinal member (103) and horizontal member (104). The horizontal bar (104) is fastened to the two corresponding holes on the two discs (102) on the two longitudinally adjacent uprights (101) by two disc buckles (105) at both ends. The horizontal bar (104) is fastened to the two corresponding holes on the two transversely adjacent uprights (101) by two disc buckles (105) at both ends. The top of several vertical bars (103) at the same height is covered with scaffold boards (106). The bottom of the uprights (101) is fixedly connected to the ground. The top of the uprights (101) is higher than the height of the highest point of the building.

3. A temporary covering system for building construction according to claim 2, characterized in that: Also includes: The binding ropes are provided in several units. The dense mesh netting (2) is bound and fixed to several discs (102) on several uprights (101) on the outside by several binding ropes. The density of the dense mesh netting (2) is 2000 meshes / 100cm. 2 .

4. A temporary covering system for building construction according to claim 3, characterized in that: The two ends of the transverse steel cable (4) are respectively fixedly connected to the two discs (102) on the top of the two uprights (101) arranged opposite to each other on the inner side of the scaffolding (1) on the left and right sides of the building; the two ends of the longitudinal steel cable (5) are respectively fixedly connected to the two discs (102) on the top of the two uprights (101) arranged opposite to each other on the inner side of the scaffolding (1) on the front and rear sides of the building.

5. A temporary covering system for building construction according to claim 4, characterized in that: Also includes: The connector is a clamp-type buckle, and several connectors are provided. The second type of dense mesh (6) is fixedly connected to several transverse steel cables (4) and several longitudinal steel cables (5) by several clamp-type buckles; the density of the second type of dense mesh (6) is 2000 mesh / 100cm. 2 .

6. A temporary covering system for building construction according to claim 5, characterized in that: The transverse steel cable (4) and the longitudinal steel cable (5) are made of the same material and are both high-strength galvanized steel strands; among the several connectors connected to the same transverse steel cable (4) or the same longitudinal steel cable (5), the distance between two adjacent connectors is 20cm.

7. A temporary covering system for building construction according to claim 6, characterized in that: The inclined support members (3) are arranged at equal intervals on the outside of the scaffold (1). The inclined support members (3) include: a horizontal support rod one (301), a horizontal support rod two (302), a cross buckle (303), an inclined rod one (304), and an inclined rod two (305). There are ten cross buckles (303). One end of the horizontal support rod one (301) is fastened to the lower part of the scaffold (1) by two cross buckles (303). One end of the horizontal support rod two (302) is fastened to the middle part of the scaffold (1) by two cross buckles (303). At a lower position, the two ends of the first diagonal rod (304) are respectively fastened and fixed to the first horizontal support rod (301) and the second horizontal support rod (302) by two cross buckles (303). The two ends and the middle part of the second diagonal rod (305) are respectively fastened and fixed to the first horizontal support rod (301), the scaffold (1) and the second horizontal support rod (302) by three cross buckles (303). The inclination angle of the first diagonal rod (304) is smaller than that of the second diagonal rod (305). The inclination angles of the first diagonal rod (304) and the second diagonal rod (305) are 45°~60°.

8. A temporary covering system for building construction according to claim 7, characterized in that: The inclined support (3) further includes: a vertical connecting rod (306), a base plate (307) and anchor bolts (308). The side of the horizontal support rod (301) away from the scaffold (1) is fastened to the vertical connecting rod (306) by a cross buckle (303). The bottom end of the vertical connecting rod (306) is fixedly connected to the base plate (307). The base plate (307) is anchored to the ground by anchor bolts (308).

9. A temporary covering system for building construction according to claim 8, characterized in that: The ground anchor assembly is provided at equal intervals on the outside of the scaffold (1). The ground anchor assembly includes: a wire rope and a reinforcing bar. The length of the reinforcing bar is greater than 2m, the diameter of the reinforcing bar is 20mm, the depth of the reinforcing bar buried in the ground is 1.5m, one end of the wire rope is fixedly connected to the upper part of the reinforcing bar that is exposed above the ground, and the other end of the wire rope is fixedly connected to the scaffold (1). The inclination angle of the wire rope is 30°~45°.

10. A temporary covering method for building construction, employing the temporary covering system for building construction as described in claim 9, characterized in that, Specifically, the following steps are included: Step 1: Before construction begins, develop a detailed scaffolding (1) erection plan based on the building's dimensions and construction requirements; according to the plan, prepare scaffolding (1), dense mesh netting (2), diagonal support components (3), horizontal steel cables (4), longitudinal steel cables (5), dense mesh netting (6), and ground anchor components; Step 2: Build scaffolding (1) according to the plan requirements; after the scaffolding (1) is built, install the inclined support (3), then bury the steel bars into the ground to the specified depth, use steel wire rope to connect the scaffolding and the steel bars, adjust the tension of the steel wire rope to make the scaffolding (1) initially reinforced; Step 3: Fully hang the dense mesh netting 1 (2) on the outside of the scaffold (1), and install it from bottom to top. Use binding ropes to firmly fix the dense mesh netting 1 (2) to the scaffold (1) to ensure that the dense mesh netting 1 (2) has no gaps or wrinkles, and complete the installation of the surrounding protective structure. Step 4: Install horizontal steel cables (4) and vertical steel cables (5) at the top of the scaffold (1). Securely connect the two ends of the horizontal steel cables (4) and vertical steel cables (5) to the top of the scaffold. Adjust the tension of the horizontal steel cables (4) and vertical steel cables (5) to make them taut. Then, fix the mesh netting (6) to the horizontal steel cables (4) and vertical steel cables (5) respectively through connectors. Adjust the position of the mesh netting to completely cover the top of the building and form a closed space.

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