plz send me the advantages of folded plates

Folded Plate Structure

a thin-walled building structure of the shell type. Folded plate structures consist of flat components, or plates, that are interconnected at some dihedral angle. Structures composed of rectangular plates aresaid to be prismatic. In modern construction practice the most widely used folded plate structures aremade of cast-in-situ or precast reinforced concrete (including prestressed and reinforced-cementstructures). The structures are used as roofs for industrial and public buildings.The main advantage of folded plate structures over other shells (such as cylindrical) is the simplicity of manufacture. Approximate static calculations of folded plate structures are based on the membranetheory of shells; more exact static calculations are based on limit equilibrium and on P. L. Pasternak’s andV. Z. Vlasov’s general theory of shells.

Folded plates :Folded plates are assemblies of flat plates rigidly connected together along their edgesin such a way so as to make the structural system capable of carrying loads withoutthe need for additional supporting beams along mutual edges.Types of folded plates :1- Prismatic : if they consist of rectangular plates.2- Pyramidal : when non-rectangular plates are used.3- Prismoidal, triangular or trapezoidal.On the other hand, Folded plates can be classified as:1- single.2- Multiple.3- Symmetrical.4- Unsymmetrical.5- Simple.6- Continuous.7- Folded plates with simple joints.8- Folded plates with multiple joints.