361
roof structures

363
Roof coverings

364
Roof cladding

369
Roofs, other

351
ceiling constructions

352
Ceiling coverings

353
Ceiling cladding

343
internal supports

331
Load-bearing exterior walls

334
Exterior doors and windows

336
Exterior wall cladding, interior

324
Subfloors and Floor Plates

326
Building waterproofing