Civil Engineering/shaft for a lift

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Expert: - 11/8/2010


Question
Dear sir I want to know how can i design a shaft for a lift?and would it be better to put a gap between shaft and building or not?Can u sugest some books and papers related to disign of shaft.

Answer
Hi Niranjan,

For achieving optimal stiffness of a building, it is best to have the liftshaft in the middle of a building, but if it needs to be at a side, then it is better not to leave a gap between shaft and building.

The shaft can be designed after analysis either by 3-D FEA program such as ETABS (see http://www.csiberkeley.com/Tech_Info/ObjectBasedShearWalls.pdf), or by manual methods, by working out the I-value and vertical/lateral loading, from which you can use design formulae similar to those for columns. A very good book is this one:

http://products.ihs.com/cis/Doc.aspx?AuthCode=&DocNum=200341

And you can also get guidance from:

http://www.iitk.ac.in/nicee/EQTips/EQTip23.pdf  

Civil Engineering

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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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