References

6.1 Hibbeler, R C, (2005), Mechanics of Materials, Sixth Edition, Prentice-Hall Inc, Sigapore, ISBN 0-13-186-638-9.

6.2 Ji, T and Bell, A J, (2007), Enhancing the understanding of structural concepts – a collection of students' coursework, The University of Manchester.

6.3 Burland, J B (2002), The Leaning Tower of Pisa, in The Seventy Architectural Wonders of Our World, Thames & Hudson Ltd, London, ISBN 0 500 51047 4.

6.4 Craig R, (1996), Mechanics of Materials, John Wiley & Sons, Canada.