| 摘要 |
<p>The safety barrier is constructed from a series of prefabricated concrete sections (2) with broad bases (3), having metal rings (9, 10) anchored in their ends to receive vertical connecting bolts (11) screwed into plates (12) set in recesses (6) in the base. Joints between sections are covered by inverted U-section caps (13) with side holes (17) for removable fixings (21), and the sides of the sections can be given reflective strips.</p> |
