Used with caution, such formulae really are very useful indeed, and indeed they form the professional stock-in-trade of most engineering designers and draughtsmen. There is not the slightest need to be ashamed of using them; in fact we all do. But they must be used with caution.


Structures (or, Why Things Don't Fall Down) (1978)


Used with caution, such formulae really are very useful indeed, and indeed they form the professional stock-in-trade of most engineering designers...

Used with caution, such formulae really are very useful indeed, and indeed they form the professional stock-in-trade of most engineering designers...

Used with caution, such formulae really are very useful indeed, and indeed they form the professional stock-in-trade of most engineering designers...

Used with caution, such formulae really are very useful indeed, and indeed they form the professional stock-in-trade of most engineering designers...