The first and second underground floors consist of installing sections and a data center. The ground floor is dedicated to the entrance and the gatehouse. The shaft is a concrete structure about 315 metres (1033 ft) high from the ground floor. Six elevators in three different sides of the shaft are used to transfer the visitors to the head of the tower at the speed of 7 metres per second (0.0070 km/s), besides an emergency staircase at the fourth side.