Grandstands & Bleachers

You're programming a gym, field or assembly space and need to connect a seat count to its section. Row count and bench length determine capacity; tread depth and riser height determine how much space the seating occupies.

The bench capacity assumption is 18 inches per person, with each 36-inch aisle removing two seats per row. Compare a low riser with a steeper section and wider row spacing. The sightline is a geometric ray to one assumed target; it does not establish accessible seating, egress capacity or visibility for a real venue.