713.01 Description. This item shall consist of furnishing and
installing span wire assemblies according to these specifications and at the locations shown on the plans or as directed.
713.02 Materials. The supporting strand shall be a continuous
length of suspension strand without splices, except for the Y connection and insulator joint, and shall be attach ed to steel poles at each end as shown on the plans. The span wire shall comply with ASTM A 475 and shal l be a nominal 5/16" (8 mm) extra high strength 7 wire str and and shall have a Class A galvanized coating. Suitable cable ties shall be provided to suspend th e traffic control cable at intervals not to exceed 18" (450 mm). Nec essary eyebolts, washers, nuts, and fittings shall be of galvanized steel complying with AASHTO M 232 or M 298, Class 40 or 50.
713.03 Construction Requirements. Before erecting the span
wire, the Contractor shall determine the length of suspension strand required to span the distance between poles, allowi ng 5% for sag plus connections. After the span wire has been assembled and the sign al heads suspended, the Contractor shall adjust the assembly to obtain a maximum of 18'-0" (5.5 m) and a minimum of 17'-0" ( 5.2 m) clearance from the bottom of the signal head to the pavement.
713.04 Method of Measurement. Span Wire Assemblies will
be measured by the unit.
713.05 Basis of Payment. Work completed and accepted and
measured as provided above will be paid for at the contract unit price bid per each for Span Wire Assembly, which pr ice shall be full compensation for furnishing and erecting the assemb ly; for all fittings, clamps, and insulators; and for all mater ials, labor, equipment, tools, and incidentals necessary to comp lete the work. Payment will be made under: Pay Item Pay Unit Span Wire Assembly Each