Prescriptive Standards for Suspended Ceiling Assemblies
SUSPENDED CEILING ASSEMBLIES. A. SUSPENDED CEILINGS AND LIGHTING SYSTEMS . The following prescriptive design may be used for suspended ceilings and lighting systems that are a maximum 4 feet (1828 mm) below the structural deck and weigh no more than 4 pounds per square foot unless the lateral bracing is designed by a licensed Engineer or Architect.