52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
474 | DF | FACER HELD BY STIFFENER-TYPE FRAME {11} |
764 | DF | .~ Facer attached between exposed frame members {11} |
773 | .~.~ Facer to frame attaching means resiliently biased {1} | |
774 | DF | .~.~.~> Attaching means in joint between adjacent facers |