Portal Frame

Definition

A portal frame is a rigid frame consisting of two columns and a beam attached with moment connections.

Purpose

Portal frames are used in construction to create large, open spaces without the need for interior load-bearing walls. They provide structural stability and can support significant loads, making them ideal for industrial buildings, warehouses, and large commercial structures.

Examples of Use

• Warehouses: Providing open floor space for storage and operations.
• Factories: Supporting the roof structure in industrial buildings.
• Commercial Buildings: Creating large, unobstructed areas in shopping centers and exhibition halls.

Related Terms

• Moment Connection: A type of connection that allows the transfer of bending moments between connected members.
• Rigid Frame: A frame structure designed to resist deformation and provide stability.
• Beam: A horizontal structural member that supports loads.

Notes

• Design: Portal frames must be carefully designed to handle the loads and stresses they will encounter.
• Materials: Typically constructed from steel or reinforced concrete for strength and durability.