Glass, specifically in the context of construction and building materials, typically falls under Division 8 of the Construction Specifications Institute (CSI) MasterFormat.
This division, known as "Openings," encompasses a wide range of products and systems related to openings in buildings. Here's a breakdown of why glass is classified under Division 8:
Division 8: Openings - A Closer Look
Division 8 isn't just about glass; it covers everything that fills an opening in a building's envelope. This includes:
- Doors: All types of doors, including swing doors, sliding doors, and revolving doors.
- Windows: Various window types like casement, awning, and sliding windows.
- Skylights: Glazed units installed in roofs to allow natural light.
- Glazing Systems: Curtain walls, storefronts, and other engineered glass assemblies.
- Hardware: Hinges, locks, handles, and other door and window hardware.
- Glazing Materials: The glass itself, including different types of glass like laminated, tempered, and insulated glass.
- Louvers and Vents: Devices that allow airflow while providing weather protection.
- Entrances: Complete entrance systems that combine doors, frames, and hardware.
- Grilles: Decorative or functional grilles used in openings.
Why Glass is in Division 8
The key reason glass is considered part of Division 8 is its primary function within a building. Glass serves to:
- Fill openings: Windows, skylights, and glazed curtain walls fill openings in the building envelope.
- Provide light and visibility: Glass allows natural light to enter a building and provides views to the outside.
- Contribute to thermal performance: Insulated glass and other advanced glazing systems help regulate building temperature.
- Enhance aesthetics: Glass contributes to the overall look and feel of a building's facade.
Because glass plays an integral role in the function and performance of building openings, it is logically classified under Division 8. The specification of glass often involves considering its interaction with other Division 8 components like window frames, door hardware, and glazing systems.
