DOCUMENT

SPEC - ANCHOR ASSEMBLY FOR CALLBOX INSTALLATIONS 2001

  • YEAR CREATED: 2001
  • TYPE OF DOCUMENT: SPEC - Specification
The document is a specification sheet for an anchor assembly used for callbox installations by the Department of Transportation and Development in the state of Louisiana. The anchor assembly, specifically the breakaway support couplings, conforms to the AASHTO 1985 standards for breakaway supports for light poles and is approved by the FHWA for use on Federal Aid Projects. The specifications include a minimum tensile strength of 13.5 kips, a minimum restrained shear of 3.0 kips and a maximum of 4.0 kips, and a nut torque of 150 plus or minus 25 ft.lbs. The external surface of the coupling is coated with phosphate per Mil. Std. TTC-490 Method 3, Type 2, with a cathodic epoxy electrocoat and fusion bond coat with black nylon No. 11, 7-15 mil. thick. The internal threads are coated with a dry film lubricant per Mil-L-23398. The anchor bolt used is 1 inch-8 UNC HDG per ASTM 153 and is installed 2 1/2 inches to 3 inches above the foundation. The coupling is installed 1/8 inch minimum to 3/8 inch maximum off the anchor foundation for leveling purposes. The breakaway support coupling is intended for use with base plate equipped motorist aid call boxes installed in locations exposed to vehicular collisions, using 1 inch diameter HDG anchor bolts.
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