- 247 - SECTION 420 -- DELINEATORS
420.01 Description
1.The Contractor shall furnish and install roadside delineator units in accordance with the details shown in the contract. A delineator unit shall consist of round, acrylic plastic, pr ismatic reflector(s) mounted on a post. The delineator unit shall be installed at the locations shown in the contract or designated by the Engineer.
2.The prismatic reflectors to be installed on the delineator shall be as follows:
a.Delineators, Type I -- One circ ular prismatic reflector and post.
b.Delineators, Type II -- Two circular prismatic reflectors mounted vertically on the same side of the post.
c.Delineators, Type III -- Two circular prismatic reflector units mounted back-to-back on a single post.
3.Flexible post delineators shall be installed with one or two 3-inch (75 mm) wide by 9-inch (225 mm) long micro-prismatic reflecting sheeting plates as shown in the contract.
4.Reflectors on the left side of divided streets and highways and one- way roadways shall be yellow in the direction of travel. All other reflectors shall be white.
5.The Contractor shall furnish and install the delineator post, mounting hardware and mount the Department supplied Chevons as shown in the contract. Chevrons (W1-8) are a Type A sign [18” X 24” (450 mm x 600 mm)] or as indicated in the contract.
420.02 Material Requirements
1.All reflectors for delineators and all flexible delineator posts shall be on the Department’s Appr oved Products List.
2.Before ordering any materials, the Contractor shall submit, for approval, the manufacturer's name and identifying information on the proposed delineator unit. There shall be no substitution subsequent to approval without the prior written permission of the Engineer.
3.Flexible Delineator Posts a. The post material shall be rubber, plastic, or any other material which meets physical test requirements and meets NCHRP 350 or MASH crashworthiness criteria.
b.The post shall be black or dark green. c. The top 11 inches (275 mm) of the post shall be flattened to approximately a 3-inch (75 mm) width to provide surfaces to mount reflectors.
d.A piece of white or yell ow (as required by the contract) reflective sheeting, no smaller than 3 inches x 9 inches (75 mm x 225 mm) shall be placed no more than 2 inches (50 mm) from the top of the post.
e.The reflective sheeting shall be ASTM D 4956 Type IV or V reflective sheeting.
420.02 Delineators
- 248 - 4. The materials used shall conform to the requirements of Sections 1070 and 1072.
5.Steel posts shall confo rm to the requirements of Subsection 1071.02 for light duty posts.
6.The highway signs and reflectors shall also conform to the requirements of Sections 1070 and 1072.
7.The Department will provide the chevrons which are to be mounted on delineator posts.
420.03 Construction Methods
1.a. The normal mounting height is shown in the Standard Plans or the contract plans. However, the E ngineer may require other mounting heights.
b.All posts on which chevrons are mounted shall be metal posts. c. When required, the chevron w ill include the delineator reflector.
2.Flexible posts shall be anchored using a galvanized anchor that is recommended by the manufacturer for the soil type at the installation location.
420.04 Method of Measurement
1."Delineator, Type _____" will be measured by the each.
2.Flexible post delineator s are measured by the each.
3.Chevrons are measured by the each per post regardless of their size. If a post requires two chevrons, it will be treated as one for payment.
420.05 Basis of Payment
1.Pay Item Pay Unit Delineator, Type _____ Each (ea) Flexible Post Delineator Each (ea I n s t a l l C h e v r o n E a c h ( e a ) 2. Payment is full compensation for all work described in this Section. - 249 - SECTION 421 -- REMOVING AND RESETTING DELINEATORS
421.01 Description
1.The Contractor shall remove and reset flexible post and standard delineators at the locations shown in the contract.
421.02 Construction Methods
1.The Contractor shall remove t he delineators, intact, and stockpile them at designated locati ons for future resetting.
2.Any material lost or damaged s hall be replaced by the Contractor at no additional cost to the Department.
3.The delineators shall be set plumb and anchored as described in the contract.
421.03 Method of Measurement
1.Removing and resetting delineators will be measured by the each.
421.04 Basis of Payment
1.Pay Item Pay Unit Remove & Reset Delineators Each (ea) Remove & Reset Flexible Post D e l i n e a t o r s E a c h ( e a )
2.Payment is full compensation for a ll work described in this Section.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 281–282 of 1,048.