1.1 This voluntary performance rating method describes procedures and requirements for determining the air infiltration, water resistance, and structural performance of factory built or knocked down field mulled fenestration assemblies with factory supplied parts according to instructions supplied by the manufacturer. This standard is not intended for curtain walls.
1.2 This method describes tset procedures and calculation procedures for determining the structural performance of mulled fenestration assemblies.
1.3 This method addresses only applicable wind loads that are applied to mulled fenestration assemblies. The intended use of a fenestration mullion does not include use as a building support.
1.4 The primary units of measure used in this document are metric. The metric units shall be considered precise values, Inch-pound units have been included for comparison and reference. Any values measured in inch-pound units shall be rouded appropriately to match the specified metric value.