Keywords: Owsj deck fireproofing.jpg Metal deck and OWSJ Open Web Steel Joist receiving first coat of spray fireproofing plaster made of polystyrene leavened gypsum all subject to bounding on the basis of Underwriters Laboratories product certification listings en wikipedia Liftarn CommonsHelper 2006-08-07 Ahering cogeco ca wikipedia en Ahering cogeco ca Original upload log page en wikipedia Owsj_deck_fireproofing jpg 2006-08-07 04 50 Ahering cogeco ca 2347×1534× 483456 bytes <nowiki>Metal deck and OWSJ Open Web Steel Joist receiving first coat of spray fireproofing plaster made of polystyrene leavened gypsum all subject to bounding on the basis of Underwriters Laborratories product certification l</nowiki> Open web steel joists Fireproofing |