Street & Area Lighting
ST3 (Truss Arm) Carbon Steel
Anchor bolts conform to ASTM F1554 Grade-55 standards. Bolts have an “L” bend at one end and a minimum of 12” galvanized threads on the other end. Two galvanized flat washers per ASTM F436 and two galvanized hexagonal nuts per ASTM A563 Grade DH are provided with each bolt.
The base plate is fabricated from ASTM A36 carbon steel. The base is fabricated with slotted bolt holes to allow for a +/- 0.5” variance in listed nominal bolt circle size. The base plate telescopes the pole shaft and is circumferentially welded top and bottom.
Each pole assembly is fashioned with a Millerbernd Manufacturing Company High Base. The base is fabricated from the same material as the pole shaft and stands 27 inches tall. The pole shaft is slip fitted and welded to the base.
The pole shaft conforms to ASTM A1011 Grade 50 carbon steel standards.
A reinforced handhole with cover, grounding lug, and hardware is provided with each pole assembly. Pole assemblies fabricated with a High-Base are provided with a flush mounted handhole with cover, grounding lug, and hardware.
ST3 arms are fabricated from 2” (2.38” O.D.) schedule 40 pipe with a supporting brace fabricated from ASTM A36 carbon steel plate. Each ST3 arm attaches to the pole shaft with a cast steel, mating 4-bolt simplex bracket (optional cast steel, mating 1-bolt (1BS) or 2-bolt (2BS) simplex brackets are available. ST3 arms have a rise of 5 feet from the pole top.
Carbon steel poles may be specified as hot-dip galvanized per ASTM A123 and/or finish painted with our standard Millerbond Wet Coat Finish.
All hardware and fasteners are supplied with each pole assembly. All structural fasteners are galvanized high-strength carbon steel.
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