Dear Sirs,
I am modelling shear wall in STAAD to IS456 using Surface elements. In this context, I have the following doubts
1. Shearwalls may be considered from one column location to next column location with the columns on either ends acting as boundary elements. Is this possible in STAAD? Should the columns and floor beams through the shear walls be modelled or not and how this will affect the design
2. There does not appear to be any design parameter option to provide thicker boundary element - the boundary element is taken to be same width as the shear wall. Please inform if there is any workaround.
3. When creating shear wall panels for designing the shear walls, there are options to set them as beam, column and wall. Which are all supported in design? I am told that only wall is supported as of now. Is that correct?
4. What is the optimum setting for SET DIVISION command? By default, it is 10, but it takes too much time to run. I set it to 4 and the results had some considerable variation. Is a size of 0.6m reasonable to fix the set division command (if max width of wall is 4.5m, 4.5/.6=7.5 and use SET DIVISION 8 may be used)
5. Shear wall design doesnt work with IS13920 - considering that Ductile Detailing to IS13920 is mandatory for all RCC structures in Zones III, IV and V, I am unable to do shear wall design with STAAD for most buildings except those in Zone II, where again I am restricted in considering Ductile Shear wall as an option.
I would be grateful for any clarifications on the above doubts
Thanks in advance
Arunkumar