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  • Treads & Risers

Treads & Risers

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

Auditorium Design BasicsExpectations for the Space Common Terminology
Chair EnvelopeClear PassageBack to Back SpacingBack PitchBack HeightEye-LevelBack OverhangChair Size LineChair SizeRow Length
Code Considerations
Safety Codes (current)Code v. ComfortADA AccessibilityWheelchair LocationsAisle Chair AccessibilityFire Safety Codes
Seating Configurations
Straight Row (Historic)Continental SeatingMixed DesignSightlinesElevation Sight Line StudyChair Stagger Methods
Treads & Risers
Rear Wall AccommodationIntermediate StepsRiser MountingFloor Mounting
Radius Design Issues Aisle Lighting
ResponsibilitiesJ-Box Placement

3251 Fruit Ridge NW

  • Grand Rapids, MI 49544
    Phone: 616.574.7400
    Toll Free: 1.866 GO IRWIN (464.7946)

610 East Cumberland Road

  • Altamont, IL 62411
    Phone: 618.483.6157
    Toll Free: 1.877.597.1122

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    • Understructure
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