| 摘要 |
The post (1) for supporting lighting, wires etc. is of wood and is solid in its upper section. The lower section (L) has its core (2) bored out, leaving a supporting wall. On impact by a vehicle, the bored-out section breaks comparatively easily compared to its solid equivalent. The post wall thickness can be between 23 to 35 mm, and can preferably be 35 mm. The height of the bored-out section above ground can be between 0.3 mm and 1.5 mm. USE/ADVANTAGE - Economic street lamp post which breaks easily on impact. |
