| 188 / | HD | BRAKES |
| * | DD | ELEMENTS {6} |
| 219.1 | DF | .~ Beams or beam assemblies {6} |
| 222.1 | DF | .~.~ With fixed head or thrust block {2} |
| 223.1 | DF | .~.~.~ Trussed beam {1} |
| 223.6 | DF | .~.~.~.~ Head or block held by tension element {1} |
| 224.1 | ![]() | .~.~.~.~.~ Tension adjusted by terminal nut |