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Auditorium Design Basics
Treads & Risers

Treads & Risers

Some of the most frequent design issues Irwin Seating Company encounters concern treads and risers safety.

Auditorium Design Basics Expectations for the Space Common Terminology

Chair Envelope Clear Passage Back to Back Spacing Back Pitch Back Height Eye-Level Back Overhang Chair Size Line Chair Size Row Length

Code Considerations

Safety Codes (current)Code v. Comfort ADA Accessibility Wheelchair Locations Aisle Chair Accessibility Fire Safety Codes

Seating Configurations

Straight Row (Historic)Continental Seating Mixed Design Sightlines Elevation Sight Line Study Chair Stagger Methods

Treads & Risers

Rear Wall Accommodation Intermediate Steps Riser Mounting Floor Mounting

Radius Design Issues Aisle Lighting

Responsibilities J-Box Placement

Contact Us

Seating Division

3251 Fruit Ridge NW
Grand Rapids, MI 49544
Phone: 616-574-7400
Toll Free: 1-866-GO IRWIN (464-7946)

Telescopic Division

610 East Cumberland Road
Altamont, IL 62411
Phone: 618-483-6157
Toll Free: 1-877-597-1122

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