Equipment Details
Product Name: TTY Call Box
Description:
A breakaway support for use on the National Highway System, each consisted of a callbox, a 102-mm diameter by 4267-mm steel pole conforming to ASTM A 500, with an A.B.Chance auger foundation, a "Call Box" sign, a "TTY" sign, a unity gain antenna, and a 6.5 Watt solar panel. The poles were equipped with rectangular slip base mounting hardware consisting of (4) 5/8- 11 UNC 3 1/4" long hot-dipped galvanized SAE J429 GD 2 hex bolts and J995 GD 2 nuts. SAE wide Type A plain washers were used against the faces of the nuts and bolts and between the slip base plates. All mating surfaces of the slip base plates, washer surfaces, and bolt threads were rubbed down with a layer of paraffin wax. The supports were augured 1664 mm (65.5 inches) into "weak" soil, and the slip base nuts were torqued to 54 N-m prior to testing.
NCHRP Approval: NCHRP Approved
Approval Letter Link: http://safety.fhwa.dot.gov/roadway_dept/road_hardware/breakaway/pdf/ss84.pdf
Website: http://www.lasafe.net/programs/index.htm
Contact(s):
Los Angeles County SAFE
One Gateway Plaza
Mail Stop 99-11-3
Los Angeles, California 90012-2932
Contact: Mr. Francisco D. Estrada
Phone: (213) 922-2951
Email: colemank@mta.net
Website: http://www.lasafe.net/
