Chickamauga Dam and powerhouse. Main control room and partial view of balcony in front of it (compare with end wall in K 2304). Large glass panels permit observation by visitors and view of plant by control room operators. Ceiling of control room is assymmetric barrel vault with acoustic tile surface; all light is indirect from reflectors above low soffit along front of room. In more recent installations, control equipment is gray instead of black to reduce eye fatigue by lessening contrast