2021 International Building Code (International Code Council Series) ISBN: 9781609839550

The 2021 International Building Code (IBC) introduces several important updates. It now defines "puzzle rooms" (escape rooms) as special amusement areas, requiring compliance with Section 411 and special egress provisions. Fire-separated areas in buildings are considered separate structures when determining allowable control areas. In Group E occupancies, classrooms with a volume of 20,000 cubic feet or less must meet updated acoustic standards as per ICC A117.1. Changes also simplify the rules for Metal Composite Materials (MCM) on exterior walls, eliminating sprinkler requirements, and address the use of intermodal shipping containers as buildings. Automatic sprinklers are now mandatory in Group S-2 open parking garages larger than 48,000 square feet. New provisions also include minimum height requirements for parapets on aggregate-surfaced roofs, updated snow and rain load standards, and reclassification of mixed occupancy buildings with assembly spaces to Risk Category III if the public occupant load exceeds 2,500.

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