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Expert: - 3/20/2001


Question
Dear Mr. Khan,
Hello, and thank you for your prompt response regarding our previous questions.
I would like to elaborate on the one-way shear transfer of the forklift wheel load on a solid slab. This question was asked previously and answered but was not clear.
In your answer, you stated that the one-way shear transfer is taken at 60-deg. Would you please check, "if the slab is solid @ T=18 cm and spans one-way( span=6 m ) and if the edge is a 20 cm in width beam( beam span=7 m ),and assuming that the beam is designed as a rectangular(not T or L)section ,if the wheel load(service load=6 tons)and is almost at the edge of the support or say clo

Answer
Dear Mr. Jarkas,

Your question is incomplete, but from what I can make out, here is the answer:

If the wheel is very close to the supporting beam, then you can take the shear to be applied over a length equal to the wheel width (w)or contact length. If it is a distance d from the beam, then the shear can be spread over a width equal to d x tan 60 x 2 + w. For a distance of 1m from the support, this equals w+1.1548 m. When half this figure exceeds the axle width (i.e. distance between 2 wheels parallel to the supporting beam), then the zones of loading(shear) start to overlap in the middle, so you need to make allowances for that.

I hope that is clear enough now.


Kind regards,

Arshad Khan

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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