| Answer | Crossword Clue |
|---|---|
| ALDER | Tree used in bridge building |
| SPLINE | Wood strip used in building. |
| KNEES | Metallic braces used in building. |
| IBAR | Steel piece used in building. |
| BULLDOZER | Machine used in road building. |
| BRICK | Clay block used in building |
| SPLINES | Thin strips used in building construction |
| TRENAIL | Wooden spike used in ship-building. |
| SHIM | Piece used to fill in, in building. |
