回字形道路护栏 河源广告道路护栏 东莞港式护栏现货

详情描述：

回字形道路护栏 河源广告道路护栏 东莞港式护栏现货
Huixing road guardrail Heyuan advertising road guardrail Dongguan port type guardrail spot

⑤跨越大片水域的特大桥或桥下净空大于或等于10m时。

⑤ When the clearance under the super large bridge crossing large water area is greater than or equal to 10m.

宜采用组合式或钢筋混泥

Combined type or reinforced concrete should be adopted

⑥二级及以上等级公路小桥、通道。

⑥ Small bridges and passageways of class II and above highways.

明涵宜采用与相邻的路基护栏同样的型式。

The open culvert should adopt the same type as the adjacent subgrade guardrail.