IS 1893-2016 (Part 1): Clause 6.3.4 Combination to account for two or Three Components

Intention:
To help students and practising engineers understand IS Code Provisions
References:
IS 1893:2016 Criteria for earthquake resistant design of structures
IAStructE Code and Commentary on IS 1893 Criteria for Earthquake Resistant Design of Structures Part 1 General Provisions and Buildings (Sixth Revision)
BMTPC Earthquake Tips
GSDMA Document Proposed Modifications and Commentary for Code on Criteria for Earthquake Resistant Design of Structures IS 1893: 2016 (Part 1- General Provisions and Buildings)
NPTEL Lectures on Structural Dynamics by R. Pradeep Kumar. nptel.ac.in/co...
Acknowledgements:
The support of students in the preparation of the slides is sincerely acknowledged.
Thank you,
R. Pradeep Kumar

[@azmat_waseem]

Very Informative... Thank you...

[@mallikarjunatkalamma]

Thank you Sir

[@subhajitmukhopadhyay4780]

Thank you, sir! One question. What if we use only Elx and Elz, but not the vertical component i.e. Ely. Should we use Elx +/- 0.3 Elz combination?