Checking Bituminous Materials

Free S5 questions: Checking Bituminous Materials

These questions are in the practice set above. Answer them there to see the correct option and the explanation for each.

• Scenario: a road reinstatement in a high friction surfaced area was completed 18 working days ago, and the high friction surface has not yet been put back. The undertaker produces the system manufacturer's requirement that the new surface course be trafficked for a period before the cold-applied material goes on, and that period has not yet run. The authority's inspector says the Code's time limit has passed and wants a breach recorded. What should the supervisor decide, under SROH?
• Scenario: planned works in a road include a reinstatement large enough to be machine laid. On every previous occasion the authority has resurfaced the road with one proprietary asphalt, which is not among the Code's own materials and is not a high friction, porous or coloured surface. The notice was served with no request about the surfacing. Weeks later, with the interim reinstatement in and SMA ordered for the permanent surface, the authority's inspector asks for the proprietary asphalt instead, saying the request is in good time because the permanent reinstatement has not yet been laid. What should the supervisor decide, and on what ground, under SROH?
• Scenario: at the notice stage the authority asked for like materials for a large machine-laid reinstatement in a road surfaced with a proprietary asphalt, not a high friction, porous or coloured surface. When the undertaker asked where the material could be obtained, the authority replied that it could not identify any source of it or of a suitable alternative. The undertaker has since found another asphalt it considers fit for the road and wants to use it. The authority's inspector objects that like materials were asked for. What should the supervisor decide, under SROH?
• Scenario: SMA is to be laid in a road reinstatement tomorrow. The supervisor knows that the authority has a policy of gritting newly laid SMA surfaces, but the authority has never told the undertaker what method or materials it wants used. The ganger proposes to spread whatever grit is left in the depot once the SMA has been rolled. What should the supervisor do, under SROH?
• Scenario: a footway is surfaced in an asphalt specified by the authority's published footway surfacing policy, a material not wholly covered by the Code's own options, and the undertaker had a copy of the policy before the works began. At the permanent reinstatement the gang proposes to lay AC6 dense surface course because it is on the wagon. The gang has made no enquiry about the policy material, and nothing else has been settled with the authority. What should the supervisor decide, under SROH?
• Scenario: bags of permanent cold-lay surfacing material arrive for a permanent reinstatement in a footway. The delivery ticket quotes a current Product Acceptance Scheme certificate. The supervisor looks it up: the certificate is issued for the product's standard formulation, while the bags are marked as the manufacturer's newer fast-setting formulation of the same product. The ganger says the certificate number on the ticket is all that is needed; the authority's inspector, on site that day, says it is not. What should the supervisor decide, under SROH?
• Scenario: in a Type 3 road the gang has laid a certified permanent cold-lay surface course, laid and compacted to its Product Acceptance Scheme certificate, in place of the asphalt concrete surface course the construction would otherwise take. The authority's inspector objects: the authority prefers hot-lay on its roads, the undertaker never asked, and in the inspector's view a substitution like this needs the authority's consent. What should the supervisor decide, and on what ground, under SROH?
• Scenario: asked for the aggregate test results behind the surface course mixture it supplies for road reinstatements, the asphalt supplier sends one sheet of PSV and AAV results for its coarse aggregate and chippings, dated several years ago, and says it is the standing evidence for the mixture. The ganger says the sheet is now on file, so nothing more is needed. What should the supervisor decide, under SROH guidance?
• Scenario: a permanent surface course in a road has been laid with coarse aggregate that meets the Code's PSV table for the road type and site. After laying, the authority's inspector says the authority's own published policy asks for a higher PSV on this road and that the surface fails it. The policy had never been supplied to the undertaker. What should the supervisor decide, and on what ground, under SROH?
• Scenario: for a permanent surface course in a road, the supplier sends a single PSV certificate with the mixture. It covers coarse aggregate from Quarry A, and its result meets the Code's PSV table for the road and site. The mixture's coarse aggregate is mostly Quarry A's stone with a share from Quarry B. The adjacent running surface was relaid recently with a high-PSV aggregate. What should the supervisor decide, under SROH?

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