Transcription of W/D, M/D, A/P Tables
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W/D, M/D, A/P Tables Issued: June 7, 2007. FIRE PROTECTION SYSTEMS. W/D, A/P and M/D Tables FOR STRUCTURAL STEEL SECTIONS. W/D, A/P and M/D ratios provide a means of sizing structural members for the purpose of fire protection. Fire rated designs specify minimum steel sizes to which the rating information applies. The fire resistance ratings are applicable to larger structural components those having greater W/D, A/P or M/D ratios than the member tested. Generally, as the W/D, A/P and M/D ratio increases, fire resistance increases and/or the required thickness of directly applied fire protection material decreases for a given rating.
FIRE PROTECTION SYSTEMS W/D, A/P and M/D TABLES FOR STRUCTURAL STEEL SECTIONS W/D, A/P and M/D ratios provide a means of sizing structural members for the purpose of fire protection.
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