8Application#

General#

The pavement marking must be set out in accordance with the drawings and any other requirements specified in the Contract documents.

The work includes:

• a) spotting or setting out the alignment of the pavement markings to ensure they are applied at the correct locations, and
• b) prior to resealing or placement of an asphalt overlay, taking measurements, preparing drawings and establishing offsets to ensure that the position of the line marking will be the same as the previous line marking. Witness Point 1

All materials must be handled and applied in accordance with the manufacturer’s instructions.

Pavement marking materials must not be applied during wet weather, or when the road pavement is wet or when adverse weather conditions may prevail during the work.

Prior to application of pavement marking material, the road surface must be prepared to produce a clean, dry surface which is free of dirt, dust and loose / foreign material.

Any foreign material such as parts of tyres, rubbish and animal carcasses that resist removal by air blasting must also be removed from the road surface prior to application of pavement markings.

If an error occurs in the placement of any pavement marking, the error must be corrected as soon as practicable. Painting over misplaced pavement markings is not permitted.

8.8 If the pavement marking material:

1. a)is potentially incompatible with an existing pavement marking or surface, or
2. b)will be applied to existing pavement marking which is flaking or chipping, or is in a condition that may impair the adhesion of the new marking, the marking or surface must be suitably prepared before applying the pavement marking material to ensure that the life of the pavement marking will not be adversely affected.

8.9 If the pavement marking is to be applied to new rigid concrete pavement surface, any curing compound must be removed beforehand by a physical abrasive means such as grinding or sandblasting.

8.10 Where the pavement surface is ‘light’ in colour (e.g. concrete pavements or where light coloured aggregates are used) the luminance factor must be measured in accordance with AS 4049.4 Appendix H, method 2. If a contrast of 80% is not achieved, then black painted contrasting lines (minimum width of 50 mm) must be used to augment the pavement marking to achieve the required luminance factor.

8.11 The application of pavement marking to an unmarked surface must comply with the tolerances listed in Clause 9.

8.12 Where the pavement marking is to be applied to previously painted surface, the pavement marking must be applied directly over the existing markings and within the tolerances listed in Clause 9.

Application of general waterborne pavement marking paint#

8.13 Completed pavement markings must be uniform in appearance, texture, width and thickness and the surface applied glass beads must be even, and free from traffic damage and other defects.

8.14 All edges of the painted line must be clean sharp cut, free of dusting or splattering. Dusting is when the paint vaporises before it reaches the road and forms a cloud of paint and splattering is when the paint bounces off the road surface as droplets.

8.15 Where required, drying additive may be applied in accordance with the paint manufacturer’s guidelines.

Thermoplastic#

8.16 The marking produced must be uniform in texture, width and thickness and the surface substantially free from blisters, streaks, lumps and other defects. Any occurrence of overspray and gun dribble must be removed by the Contractor before leaving the site.

Cold Applied Plastic (CAP)#

8.17 Cold Applied Plastic (CAP) must be applied in accordance with AS 4049.4.

8.18 Where CAP is applied using a structured pattern, it must have a coverage of 60-80% and a maximum height of 4 mm.

8.19 Completed markings must be uniform in appearance, texture, width and thickness and the surface must be free from blisters, air bubbles, tears, lumps, streaks, overlaps, unbeaded areas, tyre marks or other defects. Edges and cut-offs must be neat and sharp, and there must be no visible run-off, overspray, dribbles, splash or spillage on to the surrounding area.

Audio-tactile line marking#

8.20 Where audio-tactile line markings (ATLM) are specified, the markings must comprise of CAP or thermoplastic. The material must be capable of retaining a film build of the raised rib height required in Table 9.2.

8.21 Unless specified otherwise in the Contract documents, audio-tactile line markings must be positioned on the lines.

8.22 Type C-HR glass beads must be mixed into the thermoplastic material at not less than 20% by mass prior to application.

8.23 Two part cold applied plastic used for audio tactile line markings must be white, matt grey or matt black as specified. Matt grey and matt black profile markings must not be retroreflective and must not include intermix or surface applied glass beads. Only white cold applied plastic base line and profile ribs are to include intermix glass beads and surface applied glass beads.

Surface applied glass beads#

8.24 Surface applied glass beads including intermix and larger sizes must be applied to the surface of all pavement marking. Pavement marking material that has cured to the extent that adhesion of the drop-on glass beads to the plastic is impaired must be reapplied.

8.25 A proprietary adhesive coating must be applied to surface applied DHR beads.

8.26 The surface applied glass beads must be applied immediately after the application of the pavement marking to ensure that the beads are uniformly distributed, populated, placed and embedded across the surface.

Anti-skid media#

8.27 If specified in the Contract documents, surface applied anti-skid media must be applied to pavement markings if the skid resistance is below 45 BPN (or equivalent).

8.28 When required, surface applied anti-skid media must be applied with the glass beads immediately after the application of the pavement marking using suitable equipment to ensure that the surface applied anti-skid media and glass beads are adequately distributed, populated, placed and embedded across the painted surface.

Installation of raised pavement markers and pavement bars#

8.29 Raised pavements markers and pavement bars, must be installed as shown on the design documents or be marked in accordance with the Queensland MUTCD.

8.30 Prior to installation of the markers or bars, any material detrimental to the adhesion between the item and the pavement, must be removed.

8.31 Adhesive must be prepared, applied and cured strictly in accordance with the manufacturer’s recommendations.