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HAUC
HAUC

Other bituminous materials

S6.4.10
Where it is necessary to use bituminous materials not included in A2 they must be used in accordance with the following:
S6.4.11

General requirements

  1. Where existing road surfaces have been treated or constructed with high friction surfaces, porous asphalt or coloured surfaces, and local custom and practice has been to complete all previous resurfacing with like materials, permanent reinstatement must be carried out in accordance with the following requirements:
    1. High friction surfaces must be permanently reinstated with like materials, or an agreed alternative, in accordance with S6.4.12.
    2. In the event of notification by the authority, the reinstatement of any existing porous asphalt surface course (excluding reinstatement of small openings) must be carried out in accordance with the authority’s requirements. Small openings must be reinstated as detailed in S6.5.
    3. Coloured surfaces must be permanently reinstated with like materials, or an agreed alternative material, in accordance with S6.4.14.
    4. Specific highway authority SMA must be permanently reinstated with SMA complying with S6.4.3 to S6.4.6. If the authority does not want the reinstatement to be completed using SMA, it must contact the undertaker to agree on the surfacing material to be used.
  2. Where the overall area is sufficiently large to facilitate machine laying, local custom has been to complete all previous resurfacing with like materials, and the authority wishes to request the use of like materials:
    1. The authority must notify the undertaker accordingly at the planning or notice stage, or in the case of immediate works, before the permanent reinstatement.
    2. When requested by the undertaker, the authority must identify an appropriate and reasonably commercially available source of suitable like or alternative materials, wherever possible. Where the authority is unable to identify an appropriate source of suitable material, the undertaker must provide a suitable material on the basis of best reasonable endeavours.
    3. Where existing road surfaces have been treated or constructed with high friction surfaces, porous asphalt or coloured surfaces, and local custom and practice has not been to complete all previous resurfacing with like materials, the undertaker must consult with the authority to determine appropriate reinstatement requirements.
    4. Where other specialist surfacing materials not included in A2 or S6.4.11 have been used, in general they may be permanently reinstated in accordance with S6.4.15.
S6.4.12

High friction surfaces

  1. High friction surfaces must be permanently reinstated with a like material within 15 working days following the date of completion of the reinstatement unless the prevailing weather conditions or other site circumstances mitigate against successful application of the surfacing. Where this occurs, the permanent reinstatement must be deferred until unfavourable weather conditions or other site circumstances abate. Circumstances that justify delaying the reinstatement of a high friction surface include the manufacturer specifying that the new surface needs to be trafficked or aged before applying a cold-applied material.
  2. Before applying any permanent or interim friction surfacing, warning signs must be displayed indicating a potentially slippery road surface.
  3. All high friction materials must have a certificate from a Product Acceptance Scheme. These materials must be laid in accordance with the manufacturer’s instructions by a contractor with suitable experience, as required by the Product Acceptance Scheme for such materials.
  4. Some high friction surfacing materials have a limited manufacturer’s guarantee and may be subject to wear and abrasion during the guarantee period. However, the reinstated area must not be inferior to the adjoining surface during the guarantee period.
S6.4.13

Porous asphalt (small openings)

Small openings that do not adversely affect the overall drainage characteristics of the site may be reinstated using SMA subject to the following:
  1. Reinstatement of multiple small openings using SMA must not be closer than 3 m to each other in the principal direction of fall or surface drainage flow.
  2. Porous asphalt surface courses must be reinstated to nominally match the thickness of the existing layer.
  3. The binder course of porous asphalt reinstatements must be HRA.
  4. All edges must be saw cut or trimmed by saw to a minimum depth of 50 mm (or the thickness of the surface course, if greater), before permanent reinstatement.
S6.4.14

Coloured surfaces

Coloured surfaces must be permanently reinstated using like materials of equivalent type and similar colour, subject to the following requirements:
  1. Where the coloured surfacing is overlaid onto a road surface, a coloured overlay must be applied to the same thickness.
  2. Where the coloured surfacing is laid full depth, a coloured material must be laid to the same thickness wherever possible and practicable. Where it is not possible or practicable, the coloured surfacing must be reinstated by agreement.
  3. Some high friction surfacing materials that are coloured have a limited manufacturer’s guarantee and may be subject to wear and abrasion during the guarantee period. However, the reinstated area must not be inferior to the adjoining surface during the guarantee period.
S6.4.15

Other specialist surfacing materials and asphalt surface traffic calming structures

  1. Specialist surfaces not included in A2 or S6.4.11 must generally be reinstated with SMA.
  2. All other surfacing materials not covered above, including grouted bituminous materials, traffic calming materials/structures, etc., must be permanently reinstated by agreement.