Joist Girder

Definition

A joist girder is a light steel truss used to support open-web steel joists.

Purpose

The primary purpose of a joist girder is to support and distribute loads from the open-web steel joists to the building's structural framework. It provides a stable and efficient method of supporting roofs and floors in large, open-span structures.

Examples of Use

1. Industrial Buildings: Joist girders are used in the construction of warehouses and factories to support large roof spans.
2. Commercial Structures: In shopping malls and office buildings, joist girders support the floors and roofs, allowing for open interior spaces.
3. Sports Arenas: Joist girders are utilized in sports arenas and stadiums to support the roof structure, enabling unobstructed views.

Related Terms

• Open-Web Steel Joist: A lightweight steel truss used to support floors and roofs.
• Beam: A horizontal structural element that supports loads.
• Truss: A framework, typically consisting of rafters, posts, and struts, supporting a roof, bridge, or other structure.

Notes

Joist girders must be designed and installed according to engineering specifications to ensure they can support the intended loads. Regular inspection and maintenance are also crucial to maintain structural integrity.