52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
272 | DF | INTERSECTION OF WALL TO FLOOR, CEILING, ROOF, OR ANOTHER WALL (I.E., TWO-WAY CORNER CONSTRUCTION) {8} |
284 | .~ Block type or modular panel type {2} | |
285.1 | DF | .~.~> Finite (i.e., not coextensive), disparate material tie {3} |
286 | DF | .~.~> Block type having vertical and horizontal keys |