812.8.3.3 Testing 1 For each different type of recycled-plastic post (e.g. cross-section, size, and shape), the
department will use an acceptance lot size of no more than one thousand posts. Ensure at least one post per lot, or a minimum of one post per project, is tested by an independent laboratory for flexural strength. Provide the engineer with a copy of the test results. 2 The department will not accept posts in a lot until the lot has been approved; do not ship
lots to the project until the sample has been tested and approved. Ensure that posts are delivered in wrapped bundles of no more than 25 posts and that each bundle is marked with the lot number. 812.8.3.4 Physical Requirements
dimensions, shape, and length as specified for wood. For round posts, ensure a minimum diameter within ½ in [12 mm] of that specified.
straightness criteria specified in Subsection 812.8.1, Wood.
the specifications for flexural strength in the Western Wood Products Association
timber, with maximum or extreme fiber stress of at least 1000 psi [6895 kPa]. Test posts in accordance with ASTM D 6109.
finish relatively free of surface imperfections. 812.8.3.5 Fasteners
For attaching wire fence to recycled-plastic posts, provide and use fasteners that connect at predrilled pilot holes; do not use staples or nails.
718
Guardrail and Barrier
813.1MGS/Corrugated Metal Beam Rail
1 For rail elements and terminal sections, provide and use 12-gage [2.51 mm], corrugated
steel sheet beams in accordance with AASHTO M 180, Type II, Class A with rail post holes punched at half post spacing as shown in the contract.
813.2Guardrail Hardware
1 For guardrails and barriers, ensure the provision and use of hardware galvanized in
accordance with Subsection 501.4.1.25, Galvanizing, and Subsection 815.14, Galvanized Coating. For bridge rail connections, guardrail, median barrier, and box beam splice connections, provide and use bolts in accordance with ASTM F 3125, Grade A325 [A325M]; provide and use other bolts, washers, fittings, and accessories in accordance with ASTM A 307, grade A. Provide and use wire rope or wire cable in accordance with Subsection 811.3, Wire Rope or Wire Cable.
813.3Box Beam Barrier
1 For box beam barriers, provide and use rail elements made from tubing in accordance
with ASTM A 500 grade A or B; provide and use other structural steel elements in accordance with ASTM A 36 [ASTM A 36M] and galvanized in accordance with Subsection 501.4.1.25, Galvanizing, and Subsection 815.14, Galvanized Coating. Ensure that galvanized bolts thread easily into nuts on the splice plates.
813.4MGS Guardrail (Weathering Steel) and Corrugated Beam Guardrail (SelfOxidizing)
1 For
self-oxidizing guardrail elements, terminals, anchorages, and hardware (except reflector tabs and bolts), provide and use unpainted, ungalvanized, blast- cleaned, dry steel. Provide rail elements made of corrugated steel sheet beams in accordance with AASHTO M 180, type IV, class A, with rail post holes punched at half post spacing as shown in the contract and as modified here. For all components, including hardware, ensure the provision and use of “weathering” steel in accordance with Table 813.4-1, Weathering Steel: Chemical Composition Requirements.
719
Guardrail and Barrier