LINE GEOMETRY DATA INPUT
( input mode )
Up to 80 aerial haul rope supports can be loaded, setting the absolute values for the rope progressive distance and height. In the case of non parallel branch systems, there is the possibility to describe also the state of the line in the descent branch.
Three pushbuttons are available for the addition of a line, the deletion of a line and the calculation of the length and difference in height of the single spans (Relative Values Calculation). The first two pushbuttons are only active for a certain position of the mouse (Tower Number Column): suitable coloured label shows the actual condition. In the example below, the user clicked on the Tower NR.4 cell, thus, the line addition/line deletion pushbutton is enabled.
Handling of the column showing the ground height values
The column showing the "Ground Height" values is handled in automatic mode, provided that it has been prepared the table relevant to the ground progressive distance and height relative values. In this case, after setting the cell with the progressive distance of the tower, it is enough to go to the adjacent cell showing the "ground height" value to have this cell immediately filled in with the value calculated in automatic mode. Automatic calculation is only possible through the shift stage (by means of the mouse or the arrow key)
Handling the column showing the rope height values
Also this column is handled in automatic mode, according to the values shown in the columns "Ground Height" and "Tower Vert.Height". Calculation is carried out during the shift stage (by means of the mouse or the arrow key) from the column "Support Vert.Height" to the subsequent one "Rope Height". Obviously, the automatic calculation is only active in the presence of significant numerical values (<> 0) relevant to the height of the ground at the base of the tower and the height of the support.
For line calculation, the values relevant to the columns "Rope Progressive Distance" and "Rope Height" are of fundamental importance: the remaining values can be omitted (or loaded later).
NB:
For data input confirmation, click the pushbutton "Relative Values Calculation". In this way, the program finds in automatic mode the geometrical values relevant to the length and difference in height of the spans and it fills in automatically the subsequent data input sheet relevant to the "relative values" of the line.