All students to attempt the following question
An overhead transmission line conductor having a parabolic configuration weighs 1.925 kg/cm2 per metre of the length .The area of X-section of the conductor is 2.2 cm2 and the ultimate strength is 8000kg/cm2. The supports are 600 m apart having 15 m difference of levels.
Calculate the sag from the taller of the two supports which must be allowed so that the factor of safety shall be 5.
Assume that ice load is 1 kg per metre run and there is no wind pressure.