The dialog box of this mode contains the data given in Tables 19* and 20* of SNiP II-23-81*, Tables 30 and 31 of SP 53-102-2004 (Tables 32, 33 of SP 16.13330, Tables 1.9.9 and 1.9.10 of DBN B.2.6-163:2010, Table 13.9 and 13.10 of DBN B.2.6-198:2014). Selecting one of the tabs Members in Compression, Members in Tension under Static Loads, or Members in Tension under Dynamic Loads will open respectively Table 19* and Table 20* of SNiP II-23-81*, or Tables 30 and 31of SP 53-102-2004 (Tables 32, 33 of SP 16.13330 or Tables 1.9.9 and 1.9.10 of DBN B.2.6-163:2010, Table 13.9 and 13.10 of DBN B.2.6-198:2014).
If the Limit Slenderness mode has been invoked from a design mode, then after clicking the Apply button the selected value of the limit slenderness will be used in the analysis of structural members. Since the structure can be checked for various loading patterns, including ones where the longitudinal force sign is altered, the Apply button should be used twice — when the member is in tension and when it is in compression. The selected values can be modified in the Application Settings dialog box.
Members in tension defined by Table 20* of SNiP II-23-81* and Table 31 of SP 53-102-2004 (Table 33 of SP 16.13330, Table 1.9.10 of DBN B.2.6-163:2010, Table 13.10 of DBN B.2.6-198:2014), which are subjected to the crane loads are not considered in the application.
The allowance on the increase of the ultimate slenderness by 10% given in Sec. 11.4.1 of SP 53-102-2004, Sec. 10.4.2 of SP 16.13330, Sec. 1.9.4.2 of DBN B.2.6-163:2010, Sec. 13.4.2 DBN B.2.6-198:2014 is not implemented.