transmission line tower
The roadway of the bridge is 67 metres (220 feet) above the water but the towers holding the cables go up 227m (746ft) above the water.
undergroud cables would be: -much more expensive -much more difficult to repair -difficult to bury where they cross canals, rivers and roads. also, overhead cables are high above the ground, underground cables could affect people more because the cales wouldn't be very deep
The towers that support the Golden Gate Bridge's suspension cables are smaller at the top than at the base, emphasizing the tower height of 500 feet above the roadway
An above ground mass of hyphae is called a mycelium.
the above portion of the earth is called the earth's crust
groundwater
It varies, according to their height, and the landscape (i.e. the levels of the ground) between towers, as well as upon any restrictions on where towers may be built. The determining factor is to ensure that the ground clearance of the conductors remain above their regulation clearance.
lava
It's called lava if it's above ground or magma if it's below ground.
It is located in the mantle and is called Magma while in the ground and Lava when above ground.
It is located in the mantle and is called Magma while in the ground and Lava when above ground.
High-voltage cables are usually placed high above the ground. Also, where the cables touch the posts, special insulators are used.