The Manual Shell Course Specification tab defines the location of the critical length L, the inspection values of t1 and t2, and a joint efficiency for each shell course. Additionally, controls are provided to indicate which of these data entries should be considered in the current analysis.
If the joint efficiency is left blank, the value specified on the General Tank Datadialog box is used. Similarly, if the L location is left blank, the fluid height will be determined from the bottom of the
course. If the t1 or t2 values are left blank, they default to the user-specified thickness on the General Tank Data dialog box.