The Washington State Department of Transportation (WSDOT) utilizes hot dip galvanized, high strength ASTM F1554 Grade 105 connecting pins and anchor pins. In the Washington Standard Specifications, Section 6-10.2 states that all barrier pin hardware shall conform to Section 9-06.5(4) and be hot dip galvanized per AASHTO M232. Section 9-06.5(4) covers anchor bolts (and barrier pin hardware) and states that they must meet ASTM F1554 Grade 105, including the Supplemental Requirements for permanent stamping with the manufacturer’s mark (S2), permanent Grade stamping (S3), and Charpy Impact Testing (S4).
Connecting Pins – PB Part #18355
For connecting adjoining barrier segments together, Washington utilizes a connecting pin design that features a large welded plate washer and a nut threaded on the end to facilitate later removal. Per Note 3 on Standard Plan C-8, connecting pin heads of differing shapes are acceptable as long as the bearing surface is within the minimum and maximum widths specified (2″ to 2-1/2″).
Per the Washington Standard Specifications summarized in the introductory paragraph at the top of the page, the connecting pins must be ASTM F1554 Grade 105, hot dip galvanized per AASHTO M-232, permanently stamped with the manufacturer’s mark and the grade, and Charpy impact tested.
Type 3 Anchor Pins & Drift Pins – PB Part #18354
Washington has four types of hardware for anchoring barrier sections in place. Types 1 and 2 are expansion anchors that are used for anchoring barrier sections to concrete.
Type 3 anchor pins are 1″ x 30″ smooth rods that are driven through barrier sections at an angle to anchor them to asphalt. An optional 1/2″ bevel may be added on one end to help facilitate installation.
The fourth type of anchoring pin is referred to as a “drift pin” and is a longer variant of the connecting pin shown above. Drift pins are used for anchoring the tapered terminal barrier sections in place.
Per the Washington Standard Specifications summarized in the introductory paragraph at the top of the page, all four types of anchors must be ASTM F1554 Grade 105, hot dip galvanized per AASHTO M-232, permanently stamped with the manufacturer’s mark and grade, and charpy impact tested. They can all be seen onStandard Plan C-8 and C-8e.