52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
561 | LATERALLY RELATED, INDIVIDUALLY ASSEMBLED COURSES {4} | |
562 | DF | .~> Utilizing discrete dissimilar material tie {3} |
566 | DF | .~> Header unit traverses course {1} |
568 | DF | .~> Connected by transverse hidden joining member |
569 | DF | .~> Opposed lateral monolithic projections on modules {2} |