52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
155 | DF | PIERCING OR EXPANDING EARTH ANCHOR {7} |
162 | .~ Pivot means connecting separate fluke or hook {2} | |
163 | DF | .~.~> Fluke or hook pivoted intermediate their ends |
164 | DF | .~.~> Connected by pivoted brace or tie |