12.2.13. Definition of Reinforcements
In order to calculate surfaces and volumes, MDT can consider roadbed reinforcements. It is necessary that the initial and final vertices of the sections of the cross-section file to be reinforced are coded as Pavement, so that the program can automatically differentiate the part of each profile that should be reinforced. See the Cross-Section Configuration section for further details or the Obtain Cross-Section Profiles command.
Below is a description of each parameter that defines the reinforcement application.
Apply: If this box is checked it indicates that we wish to apply reinforcement.
Layers: This option enables us to assign different roadbed layers to the reinforcement area. If this assignment exists when calculating the volume of roadbed layers, the calculation of the corresponding materials will appear. If there is no assignment of layers, the item “Reinforcement” will appear as material in the calculation.
If we press the button Copy from roadbed the firm layers of the last assigned roadbed are read and automatically associated with the Reinforcement.
Tolerances: To apply reinforcement in a particular station the following condition must be met. The height difference in the vertices where the reinforcement is to be applied between the vertical alignment height and the terrain height must be between the Minimum Dif. and Maximum Dif. values.
The objective of these tolerances is to control the application of reinforcement only when the terrain is very near the vertical alignment height.
Application methods: Once it is decided to apply reinforcement to the template, in the area to be reinforced there are two options for the construction of the reinforcement base:
Thickness: Indicate here the thickness of the terrain in the area to be reinforced.
Adapt to Terrain: In this case a particular thickness is not applied to the reinforcement area, the subgrade is automatically adapted to the natural terrain of the area to be reinforced.
If the Adjust to Terrain option is activated, additionally in Reinforcement tab we can establish the minimum thickness that the firm will have in the area to be reinforced, in this way it will adapt to the terrain when the difference in dimension is higher than the value introduced in this control and when it is lower, there would always be a thickness of the value entered.
Designate Polylines: For the case that in top view the polylines indicate the reinforcement areas, selecting this button then said polylines, will automatically insert the reinforcement in the corresponding stations according to the definition specified.