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} |
275 | DF | .~ Laterally related modules; e.g., spaced surfacing forms corner {2} |
279 | .~.~ Abutting inner modules with outer L-type module |