A level maths is hardly necessary for most chartered civil engineers. We surely only need an instinctive and immediate understanding of very simple calculations, for instance:
1 pint = 0.57 litres 8 pints = 1 gallon How many litres in a gallon?
I recall that I experienced a difficult CE problem many years ago and a machine operator remarked to me, 'If you find out something for certain, you might let me know.'
David Lyell, Lawnpark House, Spottiswoode, Gordon, Berwickshire TD3 6NQ