41
To ensure internal ventilation, aeration channels must be provided as illustrated in the figures 55 and 56.
600 |
30 mm |
50 mm
50 | 550 |
Fig. 55
Fig. 56
41
To ensure internal ventilation, aeration channels must be provided as illustrated in the figures 55 and 56.
600 |
30 mm |
50 mm
50 | 550 |
Fig. 55
Fig. 56