TWO-WAY MERCURY VAPOR INTERNALLY ILLUMINATED TRAFFIC SIGNS

Specification

1.0 Two-Way, Mercury Vapor Internally Illuminated Traffic Signs

1.1 Standard size 24” x 30” (custom sizes are available upon request).

2.0 General Description

2.1 The two-way traffic sign shall be capable of displaying two messages at a time, in two directions.

2.2 The messages are permanently visible. Daytime illumination is not necessary.

2.3 Two-way traffic signs are serviceable from either of the access doors, and all components shall be easily accessible.

3.0 Functional Requirements

3.1 All messages shall be clearly legible, attracting attention under any lighting conditions.

3.2 The sign shall consist of an aluminum sign housing and door assemblies; two traffic sign faces (blank or printed messages); wire raceway covers and complete electrical enclosures; all necessary hardware (less final mounting); and lighting system.

3.3 Lighting will be provided by two (2) 100-watt mercury vapor lamps, deluxe white.

3.4 All ballasts shall be encased and potted, and shall be from a major manufacturer with proven dependability. All ballasts shall be rated 100 watts, 120 volts, 0.95 amps, 60 cycle.

3.5 Sockets shall be porcelain, mogul base with a ½” pipe nipple mounting.

3.6 All wiring shall be 600 volts, 90°C, #18 AGW soft annealed copper wire.

3.7 Wire connections shall be made with insulated, compression wire nuts.

3.8 All primary wiring terminations shall be made to a barrier type terminal block.

3.9 An internal on/off switch shall be provided for maintenance.

4.0 Mechanical Construction

4.1 The two-way housing shall be constructed of an exterior body and an interior channeled framework structure, both of 3003 T-12 aluminum alloy .063” thick. Housing body and inside framework shall be permanently attached to form a single unit.

4.2 All corners and seams shall be continuous TIG (Tungsten Inert Gas) welded to provide a weatherproof seal around the entire case.

4.3 The door shall be constructed of .125” thick extruded aluminum with one side removable to gain access to sign face. (Not required for normal maintenance.) Two 3” long aluminum hinges, .040” x 1 1/16” open, shall mount one side of the door to the housing. The other side of the door shall have two stainless steel #3, quarter-turn link locks (per door) to tightly secure the door to the housing.

4.4 The sign face shall be constructed of .125” white translucent polycarbonate with messages printed on exterior.

4.5 Two-way signs shall come with one 1 ½” iron mounting hub located on the top center. The mounting hub is mounted with 5/16” stainless steel hex head bolts, locking nuts and washers.

4.6 Drainage shall be provided by four drain holes located at the four corners of the housing bottoms.

4.7 The finish on the sign housings shall be appropriate coats of exterior sign enamel applied after surface material is acid-etched and primed with zinc-chromate primer.

For more information, contact

Jim Livingston livingston52@sbcglobal.net

or Christy Merkel cmerkel@trafficsignsinc.com.

Thank you for your interest!

Last Updated: October 2006