NG11 Ancillary Activities
NG11 Ancillary Activities
NG11.1 Traffic Signs, Road Markings, Studs and Verge Markers
NG11.1.1 General
The replacement of traffic signs, road markings, studs and verge markers whether temporary or permanent immediately following completion of the works, is done in the interest of road safety and particularly in the interests of people with disabilities
Also in the interests of safety where the replacement of high friction surfaces has been delayed please refer to S6.4.5.2 (2) in respects of temporary warning signs
NG11.1.2 There are no Notes for Guidance
NG11.1.3 Road Markings - General
Cold applied road markings (e.g. Methylmethacrylate) are often laid thinner than thermoplastic materials and may require longer setting or curing times. Different glass beads and other surface treatments, e.g. for skid resistance, may need to be applied to these materials. Guidance on this shall be sought from the manufacturer of the material and this guidance must be followed.
NG11.1.4 There are no Notes for Guidance
NG11.2 Street Furniture and Special Features
The replacement of traffic signs, road markings, studs and verge markers whether temporary or permanent immediately following completion of the works, is done in the interest of road safety and particularly in the interests of people with disabilities
1) Examples of sensors include ice warning sensors, buried queue and traffic detectors, other electronic detectors and various data collection devices.
2) The replacement of some traffic sensors may require the use of specialist contractors.
NG11.4.1 There are no Notes for Guidance
NG11.4.2 Water Egress (Road Surface and Utility Apparatus)
1) If water issues from the road surface or an Undertaker's apparatus, the Authority shall initiate an investigatory works procedure to determine the cause and source of the water egress. Prior to commencement of the investigatory work, the Authority should contact any Undertaker or Undertakers which it believes may be responsible for the egress of water. Undertakers shall cooperate with the Authority in its investigation and may take trial holes and check apparatus for water leakage or surcharge through the apparatus, ducts and surround to the apparatus.
2) If following the investigation, the Authority has reasonable cause to believe that water egress is caused or associated with the Undertaker's apparatus; remedial measures shall be agreed between the Authority and the Undertaker and shall be at the Undertaker's cost. In the absence of agreement between the Authority and the Undertaker, liability for any damage shall be determined in accordance with section 141 of the Act (Liability for any damage or loss caused).
NG11.5.1 Access Covers, Frames and Surround
1) The access surround is a critical feature because of the load transfer and point loads impacting on the fixed feature and as a potential point of weakness. It is therefore important that the surround is constructed to adequately withstand and transfer the applied loads.
2) The sub-structure of an underground chamber supporting an access cover and frame is constructed in such a way that it is not usually possible to achieve a full depth reinstatement in the area defined as the 'access surround'. The access surround is the width between the fixed feature (access frame) and the point at which a full depth reinstatement can be achieved with a full load transfer. The 'access surround' width will vary depending on the size of the access frame and cover.
3) The access surround should be of sufficient width to enable adequate compaction if constructed in an asphaltic material or a flowable material.
NG11.5.1.1 - NG11.5.1.2 There are no Notes for Guidance
NG11.5.1.3 Reinstatement Materials
1) Apparatus bedding materials should be compliant with the current version of HA104 and used in accordance with its requirements.
2) If the bedding material depth is greater than the manufacturers recommendations, an appropriate product should be used to infill this gap. e.g. C32/40 strength concrete.
NG11.6 There are no Notes for Guidance
Research by TRL has indicated overbanding may provide some benefits in terms of long-term performance of the reinstatement. However, poorly applied overbanding can pose a significant risk in terms of poor resistance to skidding especially for two wheeled vehicles and horses. It is therefore recommended that site-specific risk assessments should be documented by the Undertaker before any use of overbanding on potentially high risk sites as defined in Section S2.6.3.