| PYINKADO | Leguminous Asian tree (Xylia xylocarpa) whose durable reddish heartwood is used in construction; also known as Sokram (8) |
| JARRAH | Western Australian tree with hard, durable, reddish-brown wood (6) |
| ADZUKI | Dark-red edible bean variety obtained from the leguminous Asian plant Vigna angularis (6) |
| TELAMON | No metal is used in construction of the pillar (7) |
| SAPAN | East Indian heartwood whose name is an Asian country whose first letter is shifted nine spaces forward |
| EBONY | Tree related to the persimmon with dark heartwood traditionally used for black piano keys or chess pieces (5) |
| BELVA | Plain whose novel "Heartwood" was published posthumously in 2011 |
| STEEL | Alloy of iron, carbon and other elements, used in construction (5) |
| BAMBOO | Tall grasses with thick canes, often used in construction (6) |
| GRADER | A machine used in construction for flattening large surfaces (6) |
| IBEAM | I am getting engineer to procure something used in construction (1-4) |
| BRASS | Alloy of copper and zinc, used in construction of musical instruments |
| BEAM | Strong piece of eg wood or metal used in construction (4) |
| FORMICACID | Colourless, volatile liquid iodine used in construction of laminated plastic CD (6,4) |
| DURAMEN | Alternative name for the heartwood of a tree; from Latin, 'hardness' (7) |
| SPINE | Heartwood of a tree; a quill of a hedgehog; or, courage (5) |
| RIVET | Metal fastener used in construction |
| BRICK | Unit used in construction (5) |
| LEANTOS | No slate used in construction of sheds (4-3) |
| GIRDER | Metal beam used in construction |
