Q2: An overhead transmission line conductor at river having supported two towers a height of towers of 50 m, 40 m respectively and original point located between towers. If the maximum un vertical sag is 15 m and the tension in wires is 3000 N/cm2, the wind pressure is 280 N/m .If the weight of one meter of conductor is 8 N and cross sectional area is 7 cm2 let A any point on conductor has horizontal distance of 60 m between mid-point and taller tower from taller tower side. Find: 1-The span between the towers 2-The vertical distance between the upper point of short .tower and point A 1- When supports at equal levels A 12 T 12 XIN P S W.X W (½)² w 12 S= 2T 8T + 2- When the support are at unequal levels 405 S₁= = w x1 2 T =-- Th S₂ w x2 2 T Th X2 2 wl ==+ 2 wl wl h= (x2-x1) 2 T Ww tan0 = w + Wi S = = w+12 2 T Vertical sag = S cost