What aisle width is required between rows of stacking chairs in an assembly room?

The International Building Code (IBC Section 1029) requires assembly seating aisles as follows: main aisles between sections of seating must be at least 42"–48" wide; cross aisles between rows are typically 12"–14" between seat backs (the minimum clear cross-aisle space for row egress). In fixed seating, IBC requires 12" minimum clear space between rows; in movable seating, your local fire marshal may require a posted occupancy plan. Always confirm your local jurisdiction's specific requirements. For temporary event setups with stacking chairs, maintain a minimum of 12" between seat rows (back of one row to front of next) for basic egress. OfficeFurniture2go.com can advise on commercial stacking chair row specifications — call 1-800-460-0858.