Transmission Towers

At the two towers flanking the road, the line probably changes direction (as seen in plan view). Each of these two towers will need extra bracing or staying in (or near) the direction of the bisector of the angle involved. The design for this depends on the immediately surrounding terrain.

Thanks....but what type of design is being implemeted generally?

Transmission tower types are many.Mainly the formation of conductors whether horizontal or vertical and no of circuits i.e.whether single or double circuit determine the tower type as well as voltage .When conductors are in horizontal formation it is mostly a bridge tower.In addition there are also suspension towers which are used in straight line and cannot take a horizontal pull.You can see the insulators will be vertically down.Then there are what are known as termination or cut off towers where the tension in conductor is ended and a jumper is used to maintain continuity.These insulators are horizontal or parallel to ground.these towers are used where a line has to turn direction and also on straight runs to terminate the conductor and tension.The tower near substation is called a anchor tower.This has pull of line conductor on one side and a loose span without tension on other side.There is much more to this .As far as road crossing is concerned on either side two tension towers .Earlier we used double insulator strings as a safety but now single string is accepted.The two tension towers ensure quick stringing in case of any snapping of conductors.The line has to be terminated frequently on tension towers as along line of suspension towers results in multi span stringing in the vent of a snapping of conductors.Hope it answers .

TYPES OF TWR:

a) Suspension(A type twr)

b) Tension(B,C,D,E & DEtype twr)

c) River Crossing

d) Transposition twr.

for Road crossing u can use above two type twr.