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Figure 5 ' <br /> Photo of Typical 115 kV Single Circuit Steel Braced Post Structure <br /> • <br /> '1y' <br /> b -- <br /> Direct embedded galvanized steel or weathering steel poles with davit arms are proposed to be used <br /> for the tangent structures if soil conditions warrant. Rock-filled culvert foundations may be required <br /> in areas with poor soils. Self-supporting galvanized steel or weathering steel poles with davit arms or <br /> braced post on concrete foundations are proposed to be used for long-span, angle, and dead-end <br /> structures. <br /> The height of single circuit poles will average between 70 and 90 feet and the double circuit <br /> structures will average between 75 and 115 feet. The average span for the structures will be <br /> approximately 300 to 400 feet, with a maximum span of approximately 500 feet to keep the <br /> conductor within existing right-of-way,where applicable. Table 5 summarizes the structure design <br /> and foundation for the line. <br /> Table 5 <br /> Structure Design Summary <br /> Structure Span <br /> Right-of- Structure Base Foundation Between <br /> Line Type Structure Structure Way Width Height Diameter Diameter Structures <br /> Type Material (feet) (feet) (inches) (feet) (feet) <br /> Single Single Pole Galvanized 75 70-90 24 to 42: 5 to 8 300 to 500 <br /> Circuit 115 Braced Post Steel or tangent <br /> kV or Davit Weathering structures <br /> Arm Steel 36 to 42: angle <br /> structures <br /> Orono Project June 7, 2011 <br /> MPUC Docket No. E002/TL-11-223 22 <br />