- 914 - SECTION 1065 -- POLYSTYRENE BOARD FILLERS
1065.01 Description
1.This Specification covers the us e of polystyrene board as it is used to form concrete.
1065.02 Material Characteristics
1.Polystrene board shall have a minimum flexural strength of 35 psi (240 kPa), as determined by ASTM C 203. It shall also have a compressive yield strength between 16 psi and 40 psi (110 kPa and 275 kPa) at 5% by volume compression.
2.When the contract requires a facing surface of 1/8 inch (3 mm) thick hard board, then the hard board shall conform to ANSI A 135.4.
1065.03 Acceptance Requirements
1.Polystyrene board and hard board will be considered acceptable for use when the Contractor s ubmits a manufacturer’s certificate of compliance for the conformance with these Specific ations, and approval for use is given by the Department’s Materials and Research Division. - 915 - SECTION 1066 -- W-BEAM AND THRIE-BEAM GUARDRAIL
1066.01 Description
1.Galvanized W-beam and Thrie-beam guardrail shall be as shown in the contract.
1066.02 Material Characteristics
1.All parts shall be interchangeable with similar parts from other manufacturers.
2.Materials for W-beam and Thrie-beam guardrail shall conform to the requirements in AASHTO M 180, Type I Class A.
3.Wood posts and blocks shall c onform to the requirements in Section 1075.
4.Plates and other steel items s hall conform to the requirements in ASTM A 36/A 36M.
5.The galvanized bolts shall conform to the requirements in ASTM F 568 Class 4.6.
6.Steel posts shall conform to the requirements in Section 1067.
7.End shoes shall meet the r equirements of AASHTO M 180 Class B and be at least 10 gauge [0.138 inch (3.5 mm)] thick steel.
8.All anchor rods and plates, unless otherwise specified, shall conform to the physical requirements of ASTM A 36/A 36M.
9.Turnbuckles and clevises shall be steel forgings conforming to the requirements of ASTM A 668, Class B. The forgings shall be annealed before being machined.
1066.03 Acceptance Requirements
1.W-beam and Thrie-beam guardrail will be accepted based on requirements of this Section and sampling and testing requirements in accordance with the Department’s Materials Sampling Guide .
Referenced in this section
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Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 948–948 of 1,048. View official source ↗