Printing system for creating a concrete support structure for a passenger transport system

A method for building a concrete structure of a passenger transport system configured as an escalator or moving walkway, wherein a printer device for three-dimensional concrete printing is introduced in an existing structure by:

• arranging a printer guide device of the printer device between two support points of a building provided for supporting the passenger transport system, wherein the printer guide device comprises at least:
• a first section,
• a second section,
• a third section,
• a first adjustment device coupling the first section to the second section, and
• a second adjustment device coupling the second section to the third section,
• wherein the first adjustment device and the second adjustment device each comprise one of:
• one or more angular segments or an articulation point;
• adjusting a slope of the second section of the printer guide device using the first adjustment device and the second adjustment device such that the first section of the printer guide device is aligned with a first of the two support points and the third section of the printer guide device is aligned with the a second of the two support points;
• arranging a 3D concrete printer apparatus on the printer guide device, which is guided along the printer guide device between the two support points;
• and
• building a concrete structure with the printer device and a printing process wherein said concrete structure extends between the two support points.