This architectural drawing is Longitudinal section of tunnel with their geological details. A longitudinal design is one that measures the characteristics of the same individuals on at least two, but ideally more, occasions over time. Its purpose is to address directly the study of individual change and variation. Main object of the longitudinal levelling or profile is to determine the undulation of the ground surface along the predetermined line at regular interval. It is used in the centre line of road, railway, pipeline, canal, curve setting, finding the gradient of the proposed road. For more detail and information download the drawing the drawing file.
