Measurement of the Metro tunnel at the Kabaty station in Warsaw.

     In May 2020, at the request of ARCHBOX from Warsaw, we measured the Warsaw Metro tracks along with tunnel elements on a section of approximately 1.5 kilometers for the project of expanding the holding tracks. Due to the lack of train traffic and a break in the voltage of the third rail, we performed the work at night between 1:00 a.m. and 3:30 a.m. Measurements were made with two robotic stations, Trimble and Topcon.