What is an inverted canopy?
An inverted canopy (funnel-shaped canopy) is a type of conical canopy but has the opposite structure and roof shape, the tip will be directed downward.
The canopy structure is an upgraded form of the sail canopy (hypar) by taking advantage of the tension of the reinforced canvas to stretch at the edge points (border) and a point in the center (tip) at the a certain altitude. Inverted parasol roofs can be applied to any type of architectural work that investors desire.
Often popularly used in areas such as skylights, courtyards in shopping centers, walkways, parks, etc. Inverted parasol roofs bring a more impressive look, creating a unique highlight for the project. This special roof shape will help architects calculate and arrange drainage more proactively than cone-shaped roofs.
Materials used for the inverted canopy
The inverted canopy structure is a basic span structure that is widely used and suitable for any area, so the inverted canopy can be suitable for all types of architectural stretch canvas materials. . Two common types of materials commonly used are PVC coated Polyester (PVDF) or Poly tetra Fluoro Ethylene (PTFE) coated glass tarpaulin.
Mesh stretch tarpaulin has the same structure as coated tarpaulin, but the surface has small gaps between the interwoven fibers to allow light to pass through, so it is widely used for pool roof areas. Swimming or mostly used for interior and exterior shading.
Polyester (PVDF) is a versatile, recyclable fabric, an excellent choice for permanent and temporary roofing structures. Tensile structures often use PVC coated polyester because of its strength, flexibility, transparency and lifespan of up to 20 years.
Particularly, PTFE glass fabric is a highly durable type with a long lifespan of over 30 years. It is the perfect material of choice for large complex structures with stretch films. PTFE withstands the harshest environments, does not fade or become brittle over time.
PTFE glass is completely chemically inert and resistant to moisture and microorganisms. When it rains, the Teflon outer layer has a self-cleaning effect, and the PTFE canvas is actively and automatically bleached by UV light, effectively providing a bright white canopy appearance that lasts.
So depending on the purpose and usage requirements, you can discuss with the architect and consider choosing the most suitable material for your project.
Issues to keep in mind when designing an inverted canopy?
The inverted umbrella canopy has a simple, lightweight structure that minimizes load-bearing structures & helps increase usable space. To ensure a safe, high-quality, and high-standard roof system, during the design and construction process of this type of roof, there are certain requirements that architects or investors need. note.
Inverted canopy roofs have a higher geometric difficulty than other types of canopy roofs, so the design process must be carefully calculated with high accuracy to avoid wrinkle errors during the canvas stretching process, especially at the location of the tips. This location is an ideal place for rainwater drainage, so it needs to be treated in detail to waterproof and avoid water stagnation when connected to the load-bearing structural frame.
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To optimize the shielding ability for an inverted canopy, the shape of the roof must be customized, depending on the influence of the current situation such as existing buildings, trees, etc., and the height of the inverted canopy from there. are also carefully considered to meet the needs of rainwater drainage. The load-bearing frame system can take advantage of the structure of existing buildings such as concrete beams or columns to minimize material costs for the roof load-bearing structure.
Projects for inverted umbrella roofs for reference
Inverted umbrella canopy Suitable for all types of projects and all areas. This stretch canvas roof system can meet both functional and aesthetic needs for a variety of uses. Often applied to roof areas, corridors, walkways, restaurant areas, public facades of commercial centers, hospitals, schools...
Flexiiform is a company that designs and constructs professional Tensile Fabric structures in Vietnam. With a team of Architects and Engineers who are professionally trained and skilled.
We are proud to be the only unit in Vietnam to receive expert advice from Fastech Company – The leading company designing and constructing stretch canvas structures in Thailand, with reputation and nearly 30 years of experience in the industry and successfully implementing more than 1,000 stretch canvas projects in Thailand and Southeast Asia.
With the strength of creative ideas in stretch canvas architectural design, along with practical construction methods, Flexiiform is confident to bring the most optimal solutions for each specific project, especially large-scale projects. structure-related projects Stretch canvas cover.
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