Launcher Integration Building

The Launcher Integration Building is 58 metres tall and is used to assemble the stages of a launcher.

The launch campaign begins in this building with the positioning of the Main Cryogenic Stage of Ariane on one of the two mobile launch pads. The two Powder Booster Stages are then assembled on the sides of the Main Cryogenic Stage.

One of the upper stages (EPS or ESC-A depending on the mission) is positioned at the top of the main stage, as is the launcher's equipment bay.

The Ariane 5 launcher is connected to the launch pad by an umbilical cord of a height of 30 metres. Once the operations are finished in the Launcher Integration Building, the launch pad and the assembled launcher are transferred to the Final Assembly Building on a double rail track.