| 52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
|
| 518 | DF | LAPPED MULTIPLANAR SURFACING; E.G., SHINGLE TYPE {7} |
| 543 |  | .~ With fastener or anchor {8} |
| 544 | DF | .~.~> Interengaging connectable fastener parts |
| 545 | DF | .~.~> Engaging folded section of strip or facing |
| 546 | DF | .~.~> Fitted within edge slot or notch |
| 547 | DF | .~.~> Edge-embracing {1} |
| 549 | DF | .~.~> Facing clamped to substructure by discrete external member |
| 550 | DF | .~.~> Embracing or interfitted with substructure |
| 551 | DF | .~.~> Subjacent fastener strip |
| 552 | DF | .~.~> Secured to or integral with cover section |