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Annex
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Typical
Structure Types and Restrictions
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| 1 | Figures 1 to 11 show some common types of highway structures that may be encountered, the terminology used, a typical Restricted Zone that may be designated by the owning authority, typical locations of bridge waterproofing membranes and some of the constraints that the authority may place on the installation of services within it. These are not exhaustive but purely indicative. |
| 2 | Figure 1 shows a typical Restricted Zone that may be designated by a bridge authority. It will normally cover the entire width of the street and its length will extend 2 metres beyond each end of the parapet or rail. However, the extent of a designated Restricted Zone is subjective and all parties should adopt a flexible approach when considering individual circumstances to reduce the risk of damage to the structure during street works. |
| 3 | All dimensions in Figs. 1 to 11 are in millimetres. |
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