The Gypsum Association has released the 21st edition of the Fire Resistance Design Manual. Revised every three years, GA-600 has been referenced by the model building codes as a source of fire resistive designs for more than 40 years.
The 2015 edition contains nearly 100 new systems that supplement existing assemblies for walls and partitions, floor-ceiling systems, area separation walls, and many others. Among these, are 20 new head-of-wall and base-of-wall systems that significantly expand the options for perimeter relief.
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