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Civil Engineering/Design of Lift Well

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Expert: - 3/30/2008


Question
Dear Professional,
I want to design a lift well in a three storey hospital building. Size of the well is (7ft. x 7ft.) and storey height is 11ft. Can you guide me for this design as I have no experience for this.

Answer
Hi Mujahid,

This is a very difficult question to answer, as a lot depends on what else is spanning on to the lift shaft, whether the shaft is resisting lateral loads (such as wind and earthquake), etc. However, as a rough guide, for a 3 storey building the lift shaft would normally be made out of 200mm thick RC walls, using 30 Mpa concrete, with vertical rebar of T12 at 200mm centres and horizontal rebar of T10 at 200mmm centers, both layers placed in both faces (inside and outside) of the walls.

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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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