Amendment_00004_Spec_Page_49.docx

Amendment 000004

230-kV

Stringing, splicing, sagging, and clipping in three spans of existing 1/2-inch-diameter, galvanized, high-strength steel, 7-strand overhead ground wire as described; and furnishing and installing material to complete the overhead ground wire installation, except for material furnished and installed as part of tension assemblies for overhead ground wires and accessories.

Performing all work to re-install any vibration dampers for 795 kcmil, ACCR, “Drake/3M” conductors and 1/2-inch diameter, galvanized, high-strength steel, 7-strand overhead ground wires in the two (2) spans at structures 13/1 to 13/2 and 13/3 to13/4. If only one (1) damper is currently in the span, one (1) damper should be located at the existing damper distance from the existing suspension structures. If two (2) dampers are currently located one (1) at each end of the span, then locate one (1) damper at the new structure and one (1) at the existing structure, at the existing damper distance. If two (2) dampers are currently in the same span, both at the same structure, locate both dampers at the existing damper distance from the suspension structures.

Bidding Schedule items “Furnishing and installing optical overhead ground wire assemblies” include furnishing material and performing work and tests to furnish and install optical overhead ground wire assemblies complete with suspension clamp or bolted dead end, suitable for 0.465-inch diameter, 48 fiber optical overhead ground wire, shown on drawing 41 1031. An estimate of material quantities for each type of structures is shown on drawing DAD-PAD 1 1005.

Optical overhead ground wire assemblies shall comply with the characteristics of Table 10-3.

TABLE 10-3 – OPTICAL OVERHEAD GROUND WIRE ASSEMBLY CHARACTERISTICS

Bidding Schedule item “Furnishing and installing one (1) 0.465-inch diameter, 48 fiber optical overhead ground wire” includes furnishing and stringing, sagging, and clipping in the optical overhead ground wire and furnishing and installing material to complete the optical overhead ground wire installations, except for material furnished and installed as a part of suspension and tension assemblies for optical overhead ground wires and accessories.

The OPGW shall be installed from the Take-Off Structure at Longtin Substation (Station 765+61.4) to the Take-Off Structure at Topock Substation (Station 1149+71). The OPGW shall be installed on the steel take-off structures, steel lattice towers, and steel H-frame structures west OGW attachment