2. When included as Pay Items, stake Right-of-Way markers.F. Line, Grades, and StakesSet other line and grade stakes needed to construct the job, including stakes needed to relocate utilitiesand restake flattened slopes, minor grade or alignment changes, and other incidentals.G. Stake Centerline Control AlignmentsStake centerline control alignments shown on the Plans or adjusted as described above when theDepartment needs accurate measurement of quantities for payment. Stake these control alignments asfollows:1. Stake the alignments to an accuracy of 1:5000.2. Stake the alignments just before the Department takes aerial photography or field cross sectionsfor both original and final cross sections.3. Provide the Department with elevations of positions staked for the Department’s quantitymeasurements. Ensure that these elevations are of third order accuracy, or better. Determine themusing the differential leveling method.4. Take intermediate cross sections required because of stage construction, detours, or other reasons.H. Provide Graphic SketchesPrepare and use graphic sketches of superelevation runout on curves on multi-lane roadways and oftie-ins of ramps to mainline on freeways and expressways to help provide positive drainage, adequatesuperelevation, and a pleasing appearance. Prepare and use similar sketches for street or roadwayintersections.I. Maintain the StakesAfter construction has begun in any segment of the Project, maintain the stakes that identifyconstruction station numbers and locations as follows:1. Ensure that stakes are placed at intervals not to exceed 200 ft (60 m) and use even, 100 ft (30 m)stations.Mark and flag stakes so that they are visible to <strong>DOT</strong> Project personnel in that segment of theProject until construction is complete.If the project utilizes GPS controlled equipment, stakes are to be placed every 300 ft (91 m) onEnglish projects and 100 m (310 ft) on metric projects. Even, 100 ft (30m) or 100 m (310 ft)stations shall be used.2. During grading activities in fills or cuts over 20 ft (6 m), extend slope stakes up or down theslopes in intervals of 10 ft (3 m) or less to achieve an accurate cross section.J. Traffic MarkingsWhen traffic markings are to be placed by either the Contractor or others, furnish the layout and cleanand preline the surface to allow the placement of permanent pavement markings on the Project.When traffic markings are not included in the Project plans, the Department will provide striping plansand/or standard drawings for the Contractor’s use.K. Provide Bridge Construction LayoutProvide alignment control, grade control, and calculations to set these controls for bridge construction.For new bridges, the Department will furnish the necessary input data forms for the Department’s“Bridge Geometry” computer program upon the Contractor’s request. The Department will process thedata to help the Contractor obtain finished deck elevations.Data processing is available only as an alternate service to determine elevations. If this service iselected for use, prepare the input data and the Department will furnish the output data. The followinglimitations apply:• The Department will not assume liability for the accuracy of either input or output data.
• The Department will limit this service to two programs per bridge.• This service is not available for existing bridges that are to be widened. Finished deckelevations for bridges that are to be widened will not be furnished.149.3.06 Quality AcceptanceThe Engineer’s acceptance of all or any part of the Contractor’s layout shall not relieve the Contractor ofresponsibility to secure proper dimensions for the completed work. Correct at the Contractor’s expensework incorrectly located due to layout error.149.3.07 Contractor Warranty and MaintenanceGeneral Provisions 101 through 150149.4 MeasurementThis item is not measured for payment.149.4.01 LimitsGeneral Provisions 101 through 150149.5 PaymentThis work is not paid for separately. The costs for performing layout work as described in this Specificationare included in the bid for the items of work to which the layout is incidental.Any unnecessary work, overruns, costs, etc., resulting from inaccurate data submitted by the Contractorwill be deducted from Contractor payments.149.5.01 AdjustmentsGeneral Provisions 101 through 150
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