EMFWorkstation FAQ's: Uneven Terrain

Uneven Terrain

Equation 1. Conductor Height Calculation for Sloping Terrain Example

Ht_b(Ht_g,Elev_g,Elev_b) = Ht_g - (Elev_b - Elev_g)

where:  Ht_b = height of the conductor relative to the base elevation
              Ht_g = height of the conductor relative to the ground
              Elev_g = ground elevation
              Elev_b = base elevation

Table 1. Conductor Attachment Heights for Sloping Terrain Example

Base Elevation (Elev_b) = 150.0 (All values in feet)
Tower(s)	Ground Elevation	Lowest Conductor Attachment Height
	(Elev_g)	(Ht_g)	(Ht_b)
A	50.0	55.0	-45.0
B	150.0	55.0	55.0
C	220.0	70.0	140.0

Table 2. Conductor Midspan Heights for Sloping Terrain Example

Base Elevation (Elev_b) = 150.0 (All values in feet)
Tower(s)	Ground Elevation	Midspan Height
	(Elev_g)	(Ht_g)	(Ht_b)
A-B	40.0	80.0	-30.0
B-C	170.0	45.0	65.0