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Found 6 results

  1. AOA Where is the special seismic option in Etabs 2016 like it was present in Etabs 9.7.4...
  2. Why always Design System Rho and Sds are 1 and 0.5 in etabs 2016. Design > Concrete frame design > View/Revise Preferences. In etabs 9.7.1, Rho valuse is calculated from include special seismic design data option. Sds is easy to calculate but rho is not easy to calculate with hand calculation.
  3. Dear all , aslamwalekum when there are pick shear walls introduce in building , then due to vertical irregularity , we need to design the supporting column on special combo "1.2 DL + 0.5 LL +/- 2.8 EQ" , IF building is design for dual system , i want to know that how can i implement this in etabs , should i just make this combination, run and design the model and check supporting column or there is another procedure . I also read on code that supporting column should design for axial load only , but in etabs it consider axial + moment at "1.2 DL + 0.5 LL +/- 2.8 EQ" combo , so how do i avoid moment . will end release the column can work? Another issue i want to highlight that , if my system is not dual , for e.g columns are taken 20% base shear , so i need to boost up EQ by 5% to make it dual , so do i have to boost up speacial combo "1.2 DL + 0.5 LL +/- 2.8 EQ" also or should i just check it seperately. many thanks in advance for reviewing and sharing your knowledge on the topic
  4. Assalam u Alaikum . In special seismic effect there are two options wheather include it or not . So when we include it in our design ?
  5. Why and when do we require to include special seismic data in ETABS? Would anyone refer it from UBC-97?
  6. aslamwalekum we normally use special seismic option for zone 3 or 4 , but then why we donts use for zoe 2B , when we use special seismic option then load combination of 1.2 D AND 1.2 E , IS THIS IS TRUE OR WRONG
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