- 916 - SECTION 1067 -- STEEL GUARDRAIL POSTS AND SPECIAL POSTS
1067.01 Description
1.This Specification covers stee l "W 6X9" (W 150x14)” beam sections used as an alternate for treated timber guardrail line posts.
1067.02 Material Characteristics
1."W 6X9" (W150 x 14)” beam sections for use as beam guardrail line posts shall be fabricated from steel complying with the requirements of ASTM A 36/A 36M, A 588/A 588M, or A 242/A 242M and conforming to the size, weight, and dimensions shown on the designated plans. All welding shall be in accordance with AWS Specifications.
2.Bolts shall be as shown in t he contract. Galvanized bolts are required, and they shall conform to ASTM F 568 Class 4.6 or A 307. ASTM A 325, Type 3 bolts may be used with ASTM A 588/A 588M or ASTM A 242/A 242M steel without galvanizing.
3.Posts, blocks, and all necessary hardware fabricated from ASTM A 36/A 36M steel shall be galvanized in accordance with ASTM A 123.
4."W 6X9" (W150 x 14)” beam se ctions are not authorized for the following uses:
a.Curved beam guardrail (CRT posts and adjacent 4 posts).
b.End anchorage assembly - alternate design (at the last post). c. Terminal sections (BCT, MELT, SRT, BEST, ET 2000, SKT 350).
d.The 7 posts located at the tip of a bullnose.
1067.03 Acceptance Requirements
1.Steel guardrail posts and spec ial posts will be accepted based on requirements of this Section and sampling and testing requirements in accordance with the Department’s Materials Sampling Guide . - 917 - SECTION 1068 -- ELASTOMERIC BEARINGS AND LAMINATED BEARING PADS
1068.01 Description
1.Elastomeric bearings and laminated bearing pads shall conform to the requirements of the current AASHTO LRFD Bridge Design Specifications.
1068.02 Acceptance Requirements
1.AASHTO tests required for the elastomeric material and steel shall be performed in an approved laboratory at no cost to the Department.
2.Samples and certification shall be furnished in accordance with Department’s Materials Sampling Guide .
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Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 950–950 of 1,048. View official source ↗