Structural steel hollow structural section framing columns receive cementitious spray-on fireproofing per Underwriters Laboratories design UL X790 when concealed from view. Exposed structural steel framing columns receive intumescent fireproofing per Underwriters Laboratories design UL X650. Both column applications reference the structural drawings for specific sizing and engineering requirements.
E. STRUCTURAL STEEL HSS FRAMING CONCEALED FROM VIEW CEMENTITIOUS SPRAY-ON FIRE PROOFING COLUMNS: UL X790 STRUCTURAL STEEL FRAMING REF STRUCTURAL DRAWINGS F. STRUCTURAL STEEL HSS FRAMING AESS, EXPOSED TO VIEW INTUMESCENT FIREPROOFING COLUMNS: UL X650 STRUCTURAL STEEL FRAMING REF STRUCTURAL DRAWINGS
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