Appendices
Appendix 1: Description of “normal level”
1. According to Kroth et al. (1991) the total wood consumption in the conventional single-family houses in Germany amounts to 35 m³/1000 m³ space volume. The share of solid wood is 95 percent and that of wood-based panels 5 percent. The volume of 35 m³ corresponds to 31 m³ or 13.3 tonnes of oven-dry wood.
2. The space volume has been described by DIN 277/May 1973 and specifies the total volume of house above the ground including walls, ceilings and roof.
3. Based on data given by UN/ECE (1996), the average dimensions of houses in Central Europe are as follows:
- Length: 12 m
- Width: 7 m
• Height of ground floor: 2.75 m
• Height of roof : 4.0 m
4. The single-family brick house dealt with in this study consists of two floors (see Table 4) showing a layout of 136.2 m². The height of the second floor is assumed to be 2.75 m. The space volume calculated according to DIN 277 amounts to 479 m³.
5. The amount of wood used in the brick house is calculated as 13.3 m³ x 0.479 tonnes/m3 = 6.4 tonnes which can be specified as normal level.
6. In Table 4 the real input of wood is 6.5 tonnes which varies less than 2 percent from 6.4 tonnes and can be considered as normal level.
Appendix 2: Energy consumption for mosaic solid parquet, glued
|
| Non-renewable energy | Renewable energy |
(MJ) | (MJ) | |
| Preliminary stage raw wood | 32.18 | 197.97 |
| Parquet production | 64.73 | -58.78 |
| Packaging | 4.5 | 0.11 |
| Delivering | 3.24 | 0.04 |
| Laying | 32.91 | -1.65 |
| Sealing | 22.6 | 0.48 |
| Renovation | 54.7 | 1.05 |
| Demolition | 4.28 | -44.37 |
| Total | 219.14 | 94.85 |
| Energy consumption | 313.99 | |
Appendix 3: Energy consumption for a two-layer prefabricated parquet, glued
|
| Non-renewable energy | Renewable energy |
(MJ) | (MJ) | |
| Preliminary stage raw wood | 44.32 | 224.34 |
| Parquet production | 136.95 | -62.41 |
| Packaging | 3.99 | 5.49 |
| Delivering | 3.48 | 0.04 |
| Laying | 32.16 | -1.55 |
| Sealing | 25.05 | 0.52 |
| Renovation | 27.35 | 0.52 |
| Demolition | 4.87 | -43.42 |
| Total | 278.17 | 123.53 |
| Energy consumption | 401.70 | |
Appendix 4: Energy consumption for a three-layer prefabricated parquet, glued
|
| Non-renewable energy | Renewable energy |
(MJ) | (MJ) | |
| Preliminary stage raw wood | 110.05 | 197.97 |
| Parquet production | 99.21 | -58.78 |
| Packaging | 5.63 | 0.11 |
| Delivering | 4.17 | 1.04 |
| Laying | 7.07 | -1.65 |
| Sealing | 26.06 | 0.48 |
| Renovation | 26.83 | 1.05 |
| Demolition | 1.48 | -44.37 |
| Total | 280.49 | 301.64 |
| Energy consumption | 582.13 | |
