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Civil Engineering/Blade columns vs shear walls

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Question
Dear Sir,
I am designing a G+2 residential building (30ft x70ft) with flat slabs in Chennai (Seismic Zone of moderate risk). Total static seismic load in each direction is 390 kN.
I have the following queries in the design part:
1. Can I use only blade columns (1000mmx230mm) for lateral stability. Or should I definitely provide shear walls?
2. All others columns (460mmx230mm are designed for axial load and moment due to gravity loads.

Thanks,
Maheswari

Answer
Dear Maheswari

In my opinion it is not favorite to  use a frame system as called blade column system to provide a good lateral resisting system against seismic action. But after all you can use that system if you provide it with enough ductility and deformation views.

Regards
BEH

Civil Engineering

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Babak Esmailzadeh Hakimi

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I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!

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I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

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