This resulted in over estimating the torsional forces and thus conservative results.Ī) 03 The IS 1893 seismic load generation has been updated to ensure that the details of the applied moments about origin due to seismic load are reported correctly with the presence of rigid diaphragm as the torsion increases the moment (i.e. The effect was being calculated based on values of alpha and delta and about the centre of rigidity, instead of using factors of (alpha-1) and (beta-1) and applying the force about the centre of mass. This resulted in over estimating the torsional forces and thus conservative results.Ī) 02 The calculation to determine the natural torsion for rigid floor diaphragms with the seismic equivalent static method for IS 1893 has been corrected. (A) Issues addressed in the Analysis/Design engine (100)Ī) 01 The calculation to determine the natural torsion for rigid floor diaphragms with the IS 1893 response spectrum analysis has been corrected.
(L) licensing / security / installation (03).(I) The Editor, Viewer and other modules (18).
What's New in STAAD.Pro V8i SS6, Build 20.07.11.33 ( 23 June 2015) Issues addressed in:.