Where are folded plates used?

Folded plates are used as roofing structures because they provide an economical and aesthetically pleasing design. A folded plate structure consists of a series of flat plates connected to one another along their edges usually used on long spans. Longitudinally, the plates may be continuous over their supports.

Which is the type of folded plate roof?

Types of Folded Plate are the following. Prismatic: Rectangular plates. Pyramidal: Non-rectangular plates. Prismoidal: Triangular or trapezoidal plates.

What is a folded plate roof definition?

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.

What is folded structure?

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.

Folded Plate | Folded Plate Staircase | Types of Folded Plate Structures

Table of Contents

What Is Folded Plate?

Folded plate structures are in a very light form, their work can be done quickly and easily. Its length up to 30th can be easily installed

The assembly structure of flat plates in folded plates is such that they can connect with each other with their edges. In this way, the structure is formed by joining folded plates attached to each other in the structural system.

In which the formation does not require additional supporting beams. It is capable of carrying the required load.

Engineer Eugene Freyssinet created the structural structure in 1923 in the parish by folded plate. It was designed in an aircraft hangar at Orly Airport in Paris.

Folding systems are known for the principle of folding as a tool for developing design in construction in ordinary buildings.

Folded plate structure systems come in a variety of natural designs. Shapes such as broadleaf-tree leaves, petals, and foldable insect wings can be created. The folded plate keeps changing based on the new technology.

Also Read: What Is a Skeleton Frame? | What Is Building Skeleton? | Use of Steel Frame Structures | Advantages & Diaadvantage of Steel Frame Construction

Folded Plate Structures

Folded plate structures are flat plate assemblies arranged in different directions. For modern folded plate structures, folded plates are made from precast reinforced concrete or steel plates.

A folded plate consists of a shell structure as a type. The shell structure consists of a series of thin plates. Also commonly called a hipped plate.

The plate members of the folding plates are connected to each other by supporting the common edge on the common columns. Able to cover large areas by folded plate.

The specialty of creating flat surfaces is the bent plate. Due to this feature, bent plates are more used in small areas of curved surfaces. Structural multiple designs can be easily used where needed.

Also Read: What Is Truss? | Method of Joint | Zero Force Member

Types of Folded Plate Structures

1. V-Shaped Folding Plates

These V-shaped plates are usually made for architectural design. It is usually used for short spans. It cannot withstand compressive stress to the top and bottom of the concrete structure. It is used to give elevation effects.

2. Butterfly-Shaped Folding Plates

Butterfly-shaped folding plates are mostly used for factory roofs and petrol pump roofs. Windows can be installed in this type of design.

3. Trough Shaped Folding Plates

Trough-shaped folding plates have been used to build roofs for a long time. It is capable of resisting compressive stress. This type of folding plate can be used to cover a large area.

4. Tapered Folded Plates

Tapered folded plates are used especially in the factory. This type of folding plate is used to create air ventilation in the factory. It has a decorative design.

5. Hyped Folded Plates

Excited folding plates are mostly used to make cooling sheds in thermal power stations. In addition, tent sheds are made in factories.

Two types of reinforcement are used to construct such folding plates: transverse reinforcement & longitudinal reinforcement.

Also Read: What Is a Dead Load? | What Is Live Load? | Difference Between Dead Load Vs Live Load

Advantages of Folded Plate Structures

Since folded plate structures are in a very light form, their work can be done quickly and easily. Its length up to 30th can be easily installed. And it has a thickness of 60mm.
These types of structures can be used economically and reduce construction costs.
It gives better architectural effects than other forms of construction.
It can be used for long-span in construction like a factory.
It specializes in selecting specific arched shapes.
This type of structure can be used to get sunlight and air in the factory.
Very useful in construction like a petrol pump.

Also Read: What Is Concrete Topping? | Purpose of Topping Slab | Type of Concrete Topping Slab | Advantages & Disadvantages of Topping Slab | Construction Process of Laying Concrete Topping

Disadvantages of Folded Plate Structures

It isn’t easy to do shuttering work.
In this type of structure, special care has to be taken for the formwork.
This type of structure requires skilled labor and supervision.

Folded Plate Staircase

The fold plate staircase is a self-supported construction without stringers.

Folded plate staircases are often used in construction for attractive design in modern buildings. Its design is thin and attractive.

However, the centering and alignment of the folded plate stair structure demand a lot of skill. Stairs are more expensive than other categories because of such costs.

The appropriate amount of counterweight is calculated for the stability of the structure of the folded plate staircase.

The folded plate staircase runs along an open wall in a flight to connect the two floors of the building.

Also Read: What Is Floating Slab? | Purpose of Floating Slab | Construction of Floating Slab | Advantage & Disadvantage of Floating Slab

What Are Folded Plate Roofs?

Folded plate roofs are preferred for the weight-bearing capacity and durability of the roof. This type of roof has flat plates as an assembly. These folded plates are connected to each other by edges at the top.

The first folded plate roof was used in Germany in the 1920s. It was mainly made in large factories like coal bunkers. In addition, folded plate roofing technology was used to build warehouses in the U.S. in 1930.

Folded plates are easier to construct than other types of roof systems for construction such as industrial and petrol pumps etc. This type of roof is cheaper than other roofs.

Also Read: What Is Monolithic Slab? | Application of Monolithic Slab | How to Prepare Monolithic Slab Foundation? | Advantages & Disadvantagesof Monolithic Slab

Assumptions for the Analysis of Folded Plate

The material used for folded plates is elastic, uniform, isotropic, and of good quality.
Hook’s law applies to the structure of a folded plate. The thickness of the plate is less than the various dimensions of the folded plate.
The problem is considered to be one-dimensional in two dimensions based on the principle of elasticity in the folded plate.
The joint is considered to be rigid as required.

Also Read: Cantilever Beam | Advantages of a Cantilever Beam | Disadvantage of the Cantilever Beam

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Frequently Asked Questions (FAQ)

1. Folded Plate

The assembly structure of flat plates in folded plates is such that they are able to connect with each other with their edges. In this way, the structure is formed by joining folded plates attached to each other in the structural system.

2. Folded Plate Structures

Folded plate structures are flat plate assemblies arranged in different directions. For modern folded plate structures, folded plates are made from precast reinforced concrete or steel plates, etc.

3. Folded Plate Roof

Fold plate roofs are preferred for their high weight-carrying capacity and durability. They have flat slabs or plates in the assembly that are tilted in different directions and their edges are connected to each other at the top.

4. What Are the Different Types of Folding Plates?

Tapered folded plates are used for aesthetic purposes,
Z-shaped folding plates are used exclusively for factory construction
Hyped folding plates are used exclusively for tent-shed roofs and cooling towers in thermal power stations.