The maim of this thesis is to study the transmission line towers with their different types and have a better comprehensive loads behavior on the towers transmitting 110 kv; this is because the majority of the transmission lines used in Sudan of this type. Using the specifications of the British standers in manual design (CP3: Chapter v: Part2:1972). . Also the effect of both of slope in tower legs and width of the upper part on the transmitted forces to foundations and on the weight of towers; had been studied. With ETABS through several steps. And recommended some better ways in understanding the towers loading behavior. Using steel angels, which if far better economically.