Gypsum Association Releases 21st Edition of Fire Resistance Design Manual
The Gypsum Association has released the 21st edition of the Fire Resistance Design Manual (FDRM)
Revised on a three-year basis, the manual has been referenced by the model building codes as a source of fire resistive designs for more than 40 years. Now 306 pages, the latest edition contains nearly 100 new systems that supplement existing assemblies for walls and partitions, floor-ceiling systems, area separation walls and many others, according to the association. Among these are 20 new head-of-wall and base-of-wall systems that expand the options for perimeter relief.