Understanding the Stiffness Modifiers | IS1893(Part 1):2016 & IS16700:2017 | ilustraca | Sandip Deb 

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Excellent teaching 👏...now i got it thanks you sir

It would be better if you put the conclusions that you arrived at the end of discussion in the WRITTEN FORM in the same way you wrote the comments in red colour during the discussions

Very well explained Sandip

Sir then How we can apply both SLS and ULS modifier in Single Modal Analysis?

what is the essence of stiffness modifier? what is the rationale for it? is it stiffness reduction for members during analysis to attract less forces? in my Kenyan undergrad engineering class, this topic was not taught at all, I have researched on it but it still eludes me. In my personal studies, I have leant stiffness attracts forces. A stiffer member will have more moments and so on. Does stiffness modifier means the structure is made more flexible during loading action? Does it mean the building will attract less lateral forces since stiffness of members are reduced? Is that not dangerous since the structure is very flexible under stiffness modifier application? A flexible member will not be good under earth quake especially the R.C walls. Is stiffness modifier applicable in analysis or in design? if it is about cracked section, doesn't it mean it is applied in design only but not in analysis.

There are many debates and discussions that happened about the use of modification factors while designing the structure. There are two schools of thought. Many people recommend using them for analysis only. For design, no modification factor should be used according to them. Which one is correct is still a mystry !!!!

23:00

Sir, If wind load is governing the design then which model shall we consider for design? ULS model or SLS model ?

I am thinking of taking civil engineering but all saying this this and that then CSE CSE CSE ... please tell me on opportunity, struggle, efforts 😢😢😢😢 Please 🥺