Barrel Shell

Definition

A barrel shell is a type of roof structure made from reinforced concrete. It features a design that spans in one direction as a barrel vault and in the other direction as a folded plate, creating a scalloped appearance. This combination provides strength and aesthetic appeal.

Purpose

Barrel shells are used in architectural and structural engineering to cover large spaces without internal supports. The design maximizes the material's efficiency, offering both strength and flexibility. They are often employed in buildings requiring large, unobstructed interior spaces, such as auditoriums, sports facilities, and industrial warehouses.

Examples of Use

1. Sports Arenas: Barrel shell roofs are used in sports arenas to cover large seating areas, providing clear sightlines and an open atmosphere.
2. Industrial Warehouses: These structures are ideal for warehouses where large, unobstructed spaces are needed for storage and movement of goods.
3. Auditoriums and Theaters: The aesthetic appeal and structural benefits of barrel shells make them suitable for auditoriums and theaters, creating impressive, open interiors.
4. Exhibition Halls: Exhibition centers often use barrel shell roofs to create vast, open spaces for events and displays.

Related Terms

• Barrel Vault: An architectural element formed by the extrusion of a single curve along a given distance, resembling a barrel or tunnel.
• Folded Plate: A structural system consisting of flat, thin plates connected at angles to form a rigid surface, used to span large areas.
• Reinforced Concrete: Concrete in which reinforcement, typically steel, is embedded to enhance strength and durability.
• Shell Structure: Thin, curved surface structures that derive their strength from their shape and are used in architectural designs for large spans.

Notes

• Barrel shell structures require precise engineering and construction techniques to ensure stability and performance.
• They offer both aesthetic and functional benefits, making them a popular choice for modern architectural designs.
• The use of reinforced concrete allows for the creation of complex shapes and forms, enhancing the versatility of barrel shell structures.
• Maintenance of barrel shells includes regular inspection for cracks or damage in the concrete and ensuring the integrity of the reinforcement.