7-04. Delineator Std Specification.pdf
PDF 680 KB Posted
- Solicitation number
- UDOT260084MP-1 - Re solicitation
- Issued by
- Utah
About this file
This is a standard specification document issued by the Utah Department of Transportation (UDOT) for delineators, which are traffic control devices used to mark roadways, culverts, and freeway turnarounds. The specification establishes requirements for two types of delineators: Type I and Type II, along with culvert and maintenance markers, and freeway turnaround markers. The document references related sections covering pavement marking paint and retroreflective sheeting, and incorporates industry standards from AASHTO and ASTM. Steel posts must be flanged, channel-shaped, and weigh 2 lb/ft, with all cuts made before galvanizing in accordance with ASTM A 1011 and AASHTO M 111 standards. Flexible posts must remain flexible at temperatures ranging from -5 degrees F to +140 degrees F, possess a tensile strength of 1,100 psi, and be capable of being driven into earth shoulders with or without a pilot hole.
UDOT requires flexible posts to meet rigorous quality control testing protocols including cold bend tests at -10 degrees F, hot bend tests at 100 degrees F, impact resistance tests simulating sedan collisions at various angles and speeds, and ultraviolet exposure testing for 500 hours using carbon arc apparatus per ASTM G 23. Acceptable results for impact testing require that installed posts remain intact and securely anchored within 10 degrees of vertical orientation, retain at least 50 percent of reflective sheeting, and show minimal cracking or loss of rigidity. All posts must be visibly free of bends or twists both before and after installation. The specification does not include pricing information, quantities, delivery schedules, or specific award details, as it functions as a technical standard document referenced within the broader UDOT Fiber Optic and ATMS Construction Services RFP with a contract term ending March 31, 2028.
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Text version
Delineators 02842 – Page 1 of 3
January 1, 2017
SECTION 02842
DELINEATORS
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Delineators, Type I and Type II.
B. Culvert and maintenance markers.
C. Freeway turnaround markers.
1.2 RELATED SECTIONS
A. Section 02765: Pavement Marking Paint
B. Section 02890: Retroreflective Sheeting
1.3 REFERENCES
A. AASHTO M 111: Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products
B. ASTM A 1011: Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability
C. ASTM D 638: Tensile Properties of Plastics
D. ASTM D 4956: Standard Specification for Retroreflective Sheeting for Traffic Control
E. ASTM G 23: Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials
1.4 DEFINITIONS Not Used
1.5 SUBMITTALS Not Used
Implementation 01-09-2017
02842 – Page 2 of 3
January 1, 2017
PART 2 PRODUCTS
2.1 STEEL POSTS
A. Supply and galvanize posts as specified. Refer to ASTM A 1011 and
AASHTO M 111.
B. Use flanged, channel-shaped steel posts that weight 2 lb/ft.
C. Make all cuts before galvanizing posts. Refer to GW Series Standard Drawings.
2.2 FLEXIBLE POSTS
A. Free of burns, discoloration, contamination, and other defects.
B. Remains flexible at temperatures from -5 degrees F to +140 degrees F.
C. Capable of being driven into an earth shoulder with or without a pilot hole.
D. Tensile strength of 1,100 psi. Refer to ASTM D 638.
2.3 QUALITY CONTROL – FLEXIBLE POST TESTING
A. Meet Cold Bend Test
1. Subject two posts to a temperature of -10 degrees F, 5 degrees F for at least four hours.
2. Immediately bend each post four times through a 90 degree angle around a 2 inch mandrel.
3. Each post must return to its original straight configuration within a
10 degree angle within five minutes at the end of the four bends.
4. Any cracking or significant loss of rigidity are grounds for failure.
B. Meet Hot Bend Test
1. Subject two posts to a temperature of 100 degrees F 5 degrees F for at least four hours.
2. Satisfy all bending and physical requirements specified in the Cold
Bend Test.
C. Meet Impact Resistance Test
1. Subject post to impacts by a typical sedan as follows:
a. Three hits - 0 degree angle at 0 degrees F.
b. Three hits - 0 degree angle at 100 degrees F.
c. Ten hits - 0 degree angle at 35 mph.
d. Five hits - 15 degree angle at 55 mph.
02842 – Page 3 of 3
January 1, 2017
2. Acceptable Results
a. Installed post remain intact, securely anchored, and within
10 degrees of vertical orientation.
b. Installed post shows minimal signs of cracking or loss of rigidity.
c. Installed post retains at least 50 percent of its reflective sheeting.
d. Impact vehicle suffers little or no damage during the impact test.
D. Exposure
1. Expose the specimens for 500 hours in a carbon arc-type apparatus according to ASTM G 23, Method 1.
2. Acceptable results:
a. Exposure does not result in delamination, distress, or discoloration.
b. Sheeting is not removable from the specimens without damage.
c. Post is resistant to ultraviolet light, ozone, hydrocarbons, and other weathering.
2.4 SHEETING
A. Refer to Section 02890.
2.5 PAINT
A. Refer to Section 02765.
PART 3 EXECUTION
3.1 INSTALLATION
A. Posts – Visibly free of bends or twists both before and after installation.
END OF SECTION
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