5Abbreviations for building materials

#### 5 Abbreviations for building materials 5 Abbreviations for building materials > The abbreviations for building materials specified in the following Table must be used in a development application or application for a complying development certificate— > > | Walls | Code | Roof | Code | Floor | Code | Frame | Code | > | Brick (double) | 11 | Tiles | 10 | Concrete or slate | 20 | Timber | 40 | > | Brick (veneer) | 12 | Concrete or slate | 20 | Timber | 40 | Steel | 60 | > | Concrete or stone | 20 | Fibre cement | 30 | Other | 80 | Aluminium | 70 | > | Fibre cement | 30 | Steel | 60 | Not specified | 90 | Other | 80 | > | Timber | 40 | Aluminium | 70 | | | Not specified | 90 | > | Curtain glass | 50 | Other | 80 | | | | | > | Steel | 60 | Not specified | 90 | | | | | > | Aluminium | 70 | | | | | | | > | Other | 80 | | | | | | | > | Not specified | 90 | | | | | | |