361
roof structures

363
Roof coverings

364
Roof cladding

369
Roofs, other

351
ceiling constructions

352
Ceiling coverings

342
Non-load-bearing interior walls

331
Load-bearing exterior walls

334
Exterior doors and windows

335
Exterior wall cladding, exterior

336
Exterior wall cladding, interior

337
Elemental exterior walls

339
Exterior walls, miscellaneous

321
Subsoil improvement

322
shallow foundations

324
Subfloors and Floor Plates

325
Floor coverings

326
Building waterproofing