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  • हिंदी

What Is Folded Plate | Folded Plate Structure | Folded Plate Roof Construction Details | Folded Plate Staircase | What Are Folded Plate Roofs

Folded Plate

Important Point

  • What Is Folded Plate?
  • Folded Plate Structure:
  • Folded Plate Roof Construction Details:
  • Folded Plate Staircase:
  • What Are Folded Plate Roofs?
  • Types of Folded Plate
    • Folded Plates
    • Folded Plate Structures
    • Folded Plate Roofs
    • Folding Structures Architecture
    • Types of Folded Plates
    • Folded Plates Structures

What Is Folded Plate?

What Is Folded Plate

When assemblies of flat plates are rigidly connected together with each other along their edges, such setup is known as Folded Plate. Folded Plates are connected to in such a way that the structural system is capable of carrying loads without the need of additional supporting beams along mutual edges.

The first Roof which was constructed using folded structure was prepared by the engineer eudene Freyssinet in 1923 as an aircraft hangar at Orly airport in Paris.

Also, Read: Components of Space Frame System | Types of Space Frame | Advantages & Disadvantages of Space Frame Structure | Space Frame Structures Examples

Folded Plate Structure:

Folded Plate Structure

  • Folded Plate Structure is those structures where flat plates or slabs are assembled in different directions and are joined together along their longitudinal edges.
  • In Folded Plate Structure the structural system does not need additional supporting beams along mutual edges and is capable of carrying loads without supporting beams.
  • The technique of Folded Plate Structure has originated in Germany in the 1920s. Later this technique of Folded Plate Structure became popular in Russia and The United States during the 1930s for the construction purpose of roofs of Industrial warehouses and public buildings.
  • Now a day’s Folded Plate Structure is generally made up of Cast in Situ, precast reinforced concrete, or steel plates.
  • Folded Plate Structure has many benefits for construction purposes.
  • Firstly, the plates or slabs that are used in Folded Plate Structures are simpler to manufacture than other shells like cylindrical shells.
  • Secondly, the framework requirement for Folded Plate Structures is relatively simple than other structures.
  • Thirdly, fewer materials are required for the construction purpose of Folded Plate Structures; however they take more materials than curved shells if there are more bending requirements involved in the construction.
  • Finally, Folded Plate Structures are economical over long spans that need to be free of internal columns as Folded Plate Structures have an intrinsic rigidity and high load-carrying capacity than other structures.

Also, Read: How Pre Engineered Building Is Better Than Conventional Building | Advantages & Disadvantages of Pre Engineered Buildings | Use of Pre Structure

Folded Plate Roof Construction Details:

Folded Plate Roof Construction Detail

  • The construction details of Folded Plate Roof are first, precast prestressed folded plate roof elements are casted on a flat surface with hinges between each panel.
  • Then the Folded Plate Roof elements are transported flat and then opened to the desired angle during erection on the construction sites.
  • Then the joints are connected and cast in place to unify the structure.
  • This construction method and design rationale was developed in China and now being widely used in Honduras for both public buildings and industrial buildings.

Also, Read: Skeleton Frame | What Is Building Skeleton | What Is Steel Structure Building | Use of Steel Frame Structures| Advantages & Disadvantage of Steel Frame

Folded Plate Staircase:

folded plate staircase

  • In modern construction of buildings Folded Plate Staircase are used as they have a thin and sleek structure.
  • Though Folded Plate Staircase looks good they are expensive compare to other categories of staircases due to the additional cost of centering and alignment of the framework.
  • During the construction process of Folded Plate Staircase right amount of counterweight is needed for the stability of the structure.
  • Now a day’s folded plate staircase runs alongside an exposed wall to connect the two floors of a building.

Also, Read: Pile Cap Design | Pile Cap Construction | Piles Structure | Pile Cap Foundations | Square Piling Caps | Pile Cap Reinforcement

What Are Folded Plate Roofs?

Folded Plate Roofs

  • Folded Plate Roofs are a type of folded plate structure that is chosen for their durability and high weight-bearing capacity.
  • Folded Plate Roofs are easy to assemble as they consist of flat slabs or plates that are inclined in different directions and they are joined along their edges at the top.
  • In Germany in the 1920s the first Folded Plate Roofs were used in construction of mainly very large factory buildings such as coal bunkers.
  • In United States in the 1930s the technology of Folded Plate Roofs were used in the construction of warehouses and it quickly became the preferred roofing solution for really large commercial and industrial buildings.

Also, Read: What Is Pneumatic Structures | Types of Pneumatic Structures | Advantages & Disadvantages of Pneumatic Structures | Uses of the Pneumatic Structures

Types of Folded Plate

Types of Folded Plate are the following.

  • Prismatic: Rectangular plates.
  • Pyramidal: Non-rectangular plates.
  • Prismoidal: Triangular or trapezoidal plates.

Short Note

Folded Plates

Folded plates are assemblies of flat plates rigidly connected together along their edges in such a way that the structural system capable of carrying loads without the need for additional supporting beams along mutual edges.

Also, Read: What Is Superstructures | Difference Between Load-Bearing and Framed Structures

Folded Plate Structures

Folded plate structures are assemblies of flat plates, or slabs, inclined in different directions and joined along their longitudinal edges. Modern folded plate structures are typically made of cast in situ or precast reinforced concrete, or steel plate.

Folded Plate Roofs

Folded plate roofs are roofing systems chosen for their high weight-bearing capacity and their durability. They can be best described as assemblies that consist of flat slabs or plates that are inclined in different directions and are joined along their edges at the top.

Folding Structures Architecture

Folded structures are three-dimensional structures – spatial structures and they belong to the structural systems. The term folded structure defines a folded form of construction, including structures derived from elements which form a folded structure by their mutual relationship in space.

Types of Folded Plates

  1. V-Shaped Plate
  2. Butterfly-Shaped Folding Plates
  3. Trough Shaped Folding Plates
  4. Tapered Folded Plates
  5. Hyped Folding Plates

Folded Plates Structures

Folded plate structures are composed of a number of flat plates connected to each other. They have many uses: in roofing of large spans in an architecturally appealing appearance; as box girders in bridges and overpasses; as bunkers in silo structures; as sheet piles.

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By Matthew L. Deloney

About Matthew L. Deloney

Hey, I am Matthew L. Deloney. The Man Behind CivilJungle. I started this site to spread knowledge about Civil Engineering. I am a Degree Holder in Civil Engineering.

You can find him on Facebook, Twitter, Tumblr, Instagram and Google News.

Comments

  1. Nyasha Makamure says

    16th March 2021 at 7:41 pm

    THANK YOU SO MUCH Krunal Rajput…. your work has greatly inspired my projects…. your blog is way better than my classes

    Reply
    • Krunal Rajput says

      16th March 2021 at 10:56 pm

      Most welcome

      Reply
  2. Vanessa Baculio says

    12th November 2021 at 7:52 am

    Very informative. However, I would like to ask about precast concrete folded plates. What are the typical length and width of each precast plate?

    Reply

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