A shell is a thin-structural element used in a building composed of curved sheets of materials dividing the interior space of the structure from its exterior. The shell elements are typically curved and assembled into a large structure. It is made of reinforced concrete and serves both as a structure and covering. Shell structures are self-supporting and used to cover a large area of span without any supports of beams, columns, and walls. Its efficiency is based on its curvature (single or double), which allows different stress paths and gives the optimum form for transmission of many different load types. A single curvature shell is monoclastic, which can be curved in one direction and comes in the form of barrel vaults or conoid shells. Double curvature is synclastic and anticlastic which comes in the form of a sphere or hyperboloid.
Components of a shell structure;
The main purpose of constructing the shell structure is that it will cover a larger area of the building.
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