Experimental testing of precast concrete poles for overhead electrical lines

This paper presents experimental testing of precast reinforced concrete poles for overhead electrical lines. Poles are of circular tube crosssection with linear change of dimensions and the inclination of generatrix compared to axis of 0, 75%. Poles are produced in centrifuging process in lengths (l) varying from 9 m up to 14 m and with different cross-section dimensions, respectively. Important design parameter is the concentrated load on top of the pole, i.e. nominal load Fn. This can vary from 2 kN up to 25 kN, depending on the pole's purpose.