Abstract: The present invention concerns a cable erection technique using a plastically deformable coil comprising a metal wire formed in a spiral shape and synthetic resin coated on a surface of the metal wire, wherein said coil is inserted outside around a tensile line drawn between utility poles, the coil is elongated until its plastic deformation for forming a series of cable arrangement spaces inside the spiral, and a cable is extended, added or extracted through the cable arrangement space.

Abstract: The present invention concerns a cable erection technique using a plastically deformable coil comprising a metal wire formed in a spiral shape and synthetic resin coated on a surface of the metal wire, wherein said coil is inserted outside around a tensile line drawn between utility poles, the coil is elongated until its plastic deformation for forming a series of cable arrangement spaces inside the spiral, and a cable is extended, added or extracted through the cable arrangement space.

Abstract: Disclosed is a method for building an overhead infrastructure capable of minimizing loads to utility poles, increasing suspension spaces on the utility poles, decreasing costs for constructing the overhead infrastructure, and improving an appearance and maintenance workability thereof. The method comprises a step of drawing a tensile line between utility poles, a step of putting around the tensile line a plastically deformable coil having a metal wire formed in a spiral shape and synthetic resin coated on a surface of the metal wire, a step of elongating the coil until its plastic deformation so as to form a basic construction with a series of overhead cableway capable of holding a plurality of overhead lines inside the spiral of the coil, and a step of extending an overhead line in an empty space of the overhead cableway on demand.

Abstract: The present invention concerns a cable erection technique using a plastically deformable coil comprising a metal wire formed in a spiral shape and synthetic resin coated on a surface of the metal wire, wherein said coil is inserted outside around a tensile line drawn between utility poles, the coil is elongated until its plastic deformation for forming a series of cable arrangement spaces inside the spiral, and a cable is extended, added or extracted through the cable arrangement space.