Picture a steel pole or column that looks like a closed telescope set upright on its wide end. Now picture the pole moving up until it is fully extended. To construction engineers at many electric utilities, that is just the type of structure to use in areas where the right of way is limited. And what causes the pole to extend skyward to its full design height? Concrete. The composite steel and concrete telescoping pole is a patented structural system that consists of a series of steel tubes of incremental diameters nested together one inside another. Nesting leads to considerable savings in transportation and handling costs. Actually the advantages of such a structure are not restricted to overcoming jobsite space problems. While presenting the esthetic appeal of a tapered pole, concrete filled poles are much stronger than hollow steel poles of equal diameter and wall thickness. They can also be made of thinner steel with no sacrifice in strength while offering a considerable savings in weight of steel. This cost savings in some cases is sufficient to make the poles competitive with other types of support structures, such as lattice-type towers.