Default Required Duration
The Default required duration input is the value that appears in the Required duration input in beam or column input or concept mode groups for new files .
Glulam Fire Design Method
For glulam design you have a choice between CSA O86 Annex B and NBC Appendix D, 2.11.2 for fire design of glulam beams and columns. O86 Annex B is a newer mechanics-based procedure, whereas the NBC approach is an older, empirical method.