The window below (Figure 80) allows the user to define a new drainage system or to edit an existing system.


Figure 80


The drainage gallery editor contains a frame in which it is possible to specify the presence of upper or lower drains. Additional tabs are added to the editor when the user checks the corresponding boxes, as shown in Figure 81.


   

Figure 81


Drain efficiency can be specified directly by the user (e=) or calculated by CADAM3D, depending on the characteristics of the drainage system. Automatic evaluation of the efficiency is possible when the user chooses Ransford (1972). Calculated drainage efficiencies are available in the input parameters report after the analysis is completed.