SECTION 838 FLEXIBLE DELINEATOR POSTS
838.01 GENERAL. Furnish surface and ground mounted flexible delineator posts from
the Department’s List of Approved Materials. The Department considers the flexible delineator posts to include the post, reflective sheeting, and mounting hardware.
838.01.01 Retroreflective Sheeting. Conform to Section 830.
838.02 APPROVAL. The Department will approve flexible delineator posts which are
in conformance to this Section
838.03 PACKAGING. Securely fasten posts of the same type and length in bundles of
2,000 pounds or less in a manner that is easily handled by a fork lift and that prevents slipping during handling and shipping. The Engineer will reject posts with excessively damaged finishes.
838.04 CERTIFICATION. Submit manufacturer’s certification stating
conformance to the requirements of this section for each shipment of approved flexible delineator posts delivered for use on projects. Clearly st ate the manufacturer, product name, product code, and type (surface mount or ground mount) as listed in the Department’s List of Approved Material s. Identify the lot number(s) and quantity of flexible delineator posts delivered.
838.05 ACCEPTANCE. The Department will accept flexible delineator posts
based on verification of inclusion on the Department’s List of Approved Materials and compliance of the manufacturer’s certification. 838-1 SECTION 839 - KY TYPE I GLASS BEADS
839.01 GLASS BEADS. Use for application to reflective pavement markings. Conform
to AASHTO M 247, moisture resistant specifications with the following additional requirements for gradation and percentage of rounds: Gradation: Sieve Size Percent Passing No. 20 98-100 No. 30 70-90 No. 40 — No. 50 0-20 No. 80 0-5 Rounds: 70% minimum for + 50 beads
839.01.01 Sampling. The Department will obtain random samples of all shipments
that are intended for use by State Traffic Forces at the point of delivery. The Department will evaluate the beads for acceptance prior to use.
839.01.02 Composition. Manu facturers must provide certification stating compliance
to Section 1504 of MAP 21.
839.01.03 Testing. The Department will test according to AASHTO M 247 and the
following.
A.Chemical Resistance Test. Place three, 0.1 to 0.2-oun ce, samples of the beads in separate Pyrex-glass beakers or porcelain dishes. Cover one sample with distilled water; one with a 3N solution of sulfuric acid; and one with a 50 percent solution of sodium sulfide. Examine the samples microscopically after one hour of immersion. Reject the beads if they darken or “frost”.
A.Moisture Resistance Test. Place approximately 2 pounds of glass beads in a clean cotton bag not treated with sizing material. Immerse the bag in water, completely covering the beads, for approximately 30 seconds. Remove the bag and wring free of excess water. Hang the bag in room air for 2 hours to dry. Transfer the beads slowly to a clean, dry, standard (4-inch stem, and a 1/4-inch diameter exit) glass funnel. Accept beads that flow freely through the funnel.
839.01.04 Approval. The Department will notify the vendor of acceptance when all
testing is complete. The Department will evaluate beads used by the Contractor as part of the installed pavement marking in accordance with KM 64-201, KM 64-202, or KM 64-203 as applicable. 839-1
Source: Kentucky Standard Specifications for Road and Bridge Construction, 2019 Edition. Pages 669–669 of 718.