11.9 POWER HOUSE AND TURBINE SETTING
According to the location of the hydel power station, the power houses are classified as surface
power house or underground power house. As the name implies, the underground power house is one
which is built underground. A cavity is excavated inside earth surface where the sound rock is available
to house the power station. A surface power house is one which is founded on earth’s surface and its
superstructure rests on the foundation.
The surface power house has been broadly divided into three subdivisions which is separated
from the intake as mentioned below :
( a) Substructure ; ( b) Intermediate structure ; (c) Super-structure.