Once the Calculation Options dialog box is opened for RC columns / beams and the codes EC2 (ENV 1992-1-1:1991), EC2 (Belgian NAD), EC2 (Italian NAD), the General tab includes additionally the following options:
- parameter b2 : this is the coefficient depending on the duration of the load action and the frequency with which the load is applied
- selection of one of the methods allowed by the EC2 code used to design beams due to shear, i.e.: standard method and strut inclination method.
In the case of the EC2 code, after selecting Seismic dispositions button the user may switch on the Seismic dispositions according to EC8 option; depending on the plasticity rate it is possible to choose:
None
Moderate plasticity class
High plasticity class.
Within seismic dispositions the critical zone may designated along the entire length of an element.
This option is available for RC beams, columns and continuous footings.
To obtain results which take account of plastic (failure) moments for shear, the option Consider plastic moments for shear should be switched on. Calculations of the shear force load will be performed assuming that hinges are plastic. It consists in applying such values of moments to hinges that would lead to failure of elements.
For EN 1992-1-1:2004 AC:2008, the Calculation Options dialog has also the following options:
- Deviations - deviations of the cover according to Sections 4.4.1.2 and 4.4.1.3 of the code; click the Deviations button to open the Cover Deviations dialog
- Ctg theta and Ctg theta f
- Fire provisions. Clicking the Fire provisions button opens the dialog where the fire resistance can be defined for the beams and the columns. It defines time (in minutes) for which the capacity criterion is secured. Some standard classes of the fire resistance can be selected: 30, 60, 90, 120, 180 and 240 where the 'R 90' symbol means the resistance class 90 min. For beams and columns, additional parameters can be defined (the number of walls exposed to fire, the web class, the A or B calculation method, etc.).
