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Expert: - 4/28/2010


Question
Dear SIr,
Good day to you// I have to design a steel structure having one roof with steel columns and concrete columns and the beams would be of steel only.Is it possible to do a proper analysis in this case .How I would get inforamation regarding this design and what are the things need to be considered while using both steel as well as concrete columns.thanx so much

Answer
Hi Ravi,

You can do a proper analysis so long as you define the section properties correctly and you take care about detailing the joints in such a way that the assumed fixity conditions are realised or buildable.

For examle, you can cast a steel plate on the surface of a column, with anchors securely cast within the concrete, so that you can weld/bolt on a steel beam to that for a RC-to-structural steel connection.

You can also cast concrete around the steel column and design that as a composite section, so long as there is proper anchorage/bond for the concrete to the steel.

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Arshad Khan

Expertise

I can answer any questions to do with civil and structural engineering consultancy and construction industry in East Africa and the Middle East, and specifically with the analysis and design of reinforced concrete structures. My particular expertise is in the aseismic design and optimisation of tall buildings.

Experience

Employment history: 36 years in Construction and consultancy in the UK, Kenya, Tanzania, Uganda, Ethiopia, Eritrea, South Africa, Somalia, Zambia, Austria, Bahrain, Kuwait, Doha and the U.A.E.

Organizations
.Fellow of Institution of Structural Engineers (UK) .Fellow of Institution of Civil Engineers(UK) .Member of the Institution of Engineers, Kenya .Registered Engineer, ERB, Kenya .Member of the Architectural Association of Kenya (Engineers Chapter) .Chartered Engineer (UK)

Publications
•1984: International Conference on the Art and Practice of Structural Design, London •1994: 3rd Int. Kerensky Conference in Structural Engineering, Singapore •2008: International Conference on High-Rise Towers, Abu Dhabi

Education/Credentials
BSc, 1st Class Hons, in Building Engineering, University of Bath, UK MSc in Concrete Structures and Technology, University of London. Diploma of Imperial College, UK.

Awards and Honors
•Science Congress Special Award (for 2-seater Hovercraft - 1968) •Institution of Civil Engineers Award for outstanding performance at Bath University (1975) •Concrete Society Postgraduate study Bursary Award (1976) •Consular Representative for British High Commission, Nairobi. (1995 to 1998) •Examiner for Institution of Civil Engineers Professional Interviews, Nairobi. (1997 to 1998) •Branch Representative in Vienna for PI assessment for Inst. of Struct. Engrs. (1999 to date)

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