Profile: Sarah Williamson

Simon Pole finds this book to be an easy read on what is a heavy subject. It contains helpful guidance for any engineers considering taking on the role of party wall surveyor.

This month's letters reflect on the Genoa bridge collapse and ask how many other pieces of infrastructure may be unsafe, consider the subsidence problems that may arise from a hot summer and more.

From plastic theory to magnificent cathedrals, Jacques Heyman has had a long and varied career. Helena Russell maps the highlights.