Solution 4

Solution 6

References

Christopher Gorse, D, J, M, P , 2012. Dictionary of Construction, Surveying, and Civil Engineering. 1st ed. Oxford: Oxford University Press.

Hill, H. W, 2015, An Historical Review of Waterways and Canal Construction. 2nd ed. New York: BiblioLife.

Wood, D. M., 2012. Civil Engineering: A Very Short Introduction. 1st ed. Oxford: Oxford University Press.