Egg profile tubes are the ideal solution because of gallery geometrics, given that they are equivalent to the cross section of the gallery. The remaining hollow space is subsequently filled with insulating material. Moreover, it is also possible to install and operate a ground water reserve for low water levels.

For standard galleries, trenches of just 2.50 m x 2.50 m have to be dug, from which the culvert refurbishment using the gallery structure building method is then completed. Usually these are also the shaft trenches which have to be set up instead of the old structure during culvert refurbishments.

Gallery structure building is the better solution for short routes, such as railway underpasses or road underpasses, etc. since it is less pricey than conventional structures.