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A vertical alignment is defined as a state of vertical alignments which shape the design of the final state of a longitudinal profile. It involves certain distances to origin and their absolute elevations with the possibility of linking the vertices to each other by means of parabolic or circular segments (vertical alignments) which we will define by any of their components: Kv (parabola parameter, this value must be equal or bigger than 0.0) or R (radius of the circular), Tangent (length in middle branch orthogonal projection on each of the alignments involved) or Arrow (maximum ordinate at the vertex).

TcpGPS works indiscriminately with parabolic or circular alignments.

These files are compatible with the format of the files from the TcpMDT programme (*.RAS). The options to manage this type of files are as follows: