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-�' l , E3 <br /> �9in Thkns In. <br /> Restrained Beam Unrestrained Beam <br /> Rating lir Rating Hr Rating Hr <br /> � 7/16 7/16 <br /> 1-i/2 7/16 3/4 <br /> � 11/16 1 <br /> 3 1-3/1G 1-5/16 <br /> 4 1-5/8 1-5/8 <br /> l�he thickness of Spray-Applied Pire Resistive Matcrials shown in thc table below are <br /> only applicaUle whcn the beams are sup{wrtiug solid, normal ���eight, concrete slabs or <br /> Ooor assemblies containing only (luted floor or forni units, topped with normal weight <br /> concrcle. <br /> Min Thkns In. <br /> RestraineJ Bcam Unrestrairsc�i Beam <br /> Rating Hr Rating Hr Ra:�a� Hr <br /> � 3/8 3/8 <br /> �_�/2 3/S 5/8 <br /> � 9/16 7�g <br /> 3 1 1-7/16 <br /> q I-7/16 � <br /> 9 hc thickness of Spray-Applicd Pire Resistive Materials shown in the table below are <br /> applicable�vhen the thickness applicd to the beams' lo��•er flange cdges is reduced b�� <br /> onc-half and thc Ueams are supporting solid concrete slaUs or Ooor assemblies <br /> cuntaining only Iluted (loor or form units with lightwcight concrctc. <br /> Dtin 7'hkns In. <br /> Restrained I3cam llnrestrained Beam <br /> Rating Hr Rating Hr Rating Hr <br /> � 7/16+ 7/16+ <br /> I-1/2 7/16+ 3/4 <br /> � I 1/16 1 <br /> 3 1-?/16 1-7/16 <br /> q 1-11/16 1-15/16 <br /> �/,,� <br />