| 摘要 |
<p>The bridge is particularly to allow fire hoses to be run above street surfaces so that vehicles do not travel over them. The pipe itself (5) forms part of the bridge frame and this part of the pipe can be collapsible. Other supports (10) can also be provided, hinging (11) on the pipe portion of the frame, which can have a foot (12). The pipe portion can comprise a horizontal central section and two vertical pipe bends, joined together by quick-action couplings.</p> |
