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CITY OF LAKE ELMO, MN | PROJECT NO. 2024.108 PAVEMENT MARKINGS 3217-1 <br /> <br />SECTION 3217 – PAVEMENT MARKINGS <br />SCOPE: <br />This Work shall consist of furnishing and applying pavement markings for control and guidance of traffic in <br />accordance with these Specifications, at locations shown in the Plans, and as directed by the Engineer. <br />PRODUCTS: <br />1. ACRYLIC WATERBORNE TRAFFIC MARKING PAINT. Acrylic latex waterborne traffic marking paint for <br />pavement markings shall conform to MnDOT 3591 Water-based Traffic Paint or approved equal. <br />2. DROP-ON GLASS BEADS: Drop-On Glass Beads for pavement markings shall meet the requirements of <br />MnDOT Standard Specifications for Construction, 2020 Edition. <br />EXECUTION: <br />1. TRAFFIC CONTROLS: The Contractor shall provide Traffic Control for the pavement marking operations in <br />conformance with the Minnesota Manual of Uniform Traffic Control Devices. Suitable warning signs shall <br />be placed near the beginning of the worksite and well ahead of the worksite for alerting approaching <br />traffic from both directions. Small markers shall be placed along newly marked lines to control traffic and <br />prevent damage to newly marked surfaces. Pavement marking equipment shall be identified with large <br />warning signs indicating slow-moving equipment in operation. <br />2. SURFACE PREPARATION: All surfaces to be marked shall be thoroughly cleaned immediately prior to an <br />application of pavement marking. Dust, dirt, and other granular surface deposits shall be removed by <br />sweeping, blowing with compressed air, rinsing with water, or a combination of these methods as <br />required. Rubber deposits, surface laitance, existing paint markings, and other coatings adhering to the <br />pavement shall be completely removed with scrapers, wire brushes, sandblasting, approved chemicals, or <br />mechanical abrasion as directed. Where oil or grease is present, affected areas shall be scrubbed with <br />several applications of trisodium phosphate solution or other approved detergent or degreaser, and <br />rinsed thoroughly after each application. After cleaning, oil-soaked areas shall be sealed with cut shellac <br />to prevent bleeding. Pavement surfaces shall be allowed to dry when water is used for cleaning. Surfaces <br />shall be recleaned when work has been stopped due to rain. <br />A. Cleaning Existing Pavement Markings. In general, markings shall not be placed over existing <br />pavement marking patterns. Existing pavement markings shall be removed that are in good <br />condition but interfere or conflict with the newly applied markings. Deteriorated or obscured <br />markings that are not misleading or confusing or interfere with the adhesion of the new marking <br />material do not require removal. New preformed and thermoplastic pavement markings shall not <br />be applied over existing preformed or thermoplastic markings. Whenever grinding, scraping, <br />sandblasting, or other operations are performed, the Work must be conducted in such a manner <br />that the finished pavement surface is not damaged or left in a pattern that is misleading or <br />confusing. <br />B. When surface preparation operations are completed, the pavement surface shall be blown-off with <br />compressed air to remove residue resulting from the cleaning work. <br />3. APPLICATION: Pavement markings shall be placed in accordance with the details shown in the Plans and <br />as directed by the Engineer. The Contractor shall place spotting at appropriate points to provide <br />horizontal control for striping, and determine necessary starting and cutoff points. The Contractor must <br />request Engineer review and approval prior to proceeding with striping operations. Material shall not be <br />applied over a longitudinal joint.