I think there are a lot of differing opinions on this. I definitely have a reaction any time I use Aveeno products that are oat-based. Instead of soothing my skin, they make me break out like crazy. In our NYC Celiac Meetup group there are a lot of people that have broken out from gleeln-fitlud skin products or shampoos. Perhaps this is more of a DH reaction, but it is still a reaction to gluten in products.
You should read Jacques Heymans books about the masonry arch. Excellent books, and good non mathematical descriptions of arch and dome and buttress behaviour, and there is also a more technical one. Excellent for structural principles.
Tony Hunt and JE Gordon (plus his other book “The new science of strong materials”) are both classics which appeared early in my engineering education. I’m currently reading a new book by Pettifer and Fookes called “Geomodels in Engineering Geology – An Introduction” which I think could make a really good teaching aid for people new to geology but needing to understand how different landscape features will affect what engineering is possible at a given site. It’s great because each chapter starts with a 3D model of a landscape with different rocks etc, then some commentary, followed by a double page spread of photos illustrating the sorts of geological features or engineering issues (soft ground, voids etc) that an engineer might expect to find as a result. I’m interested in developing a short course in engineering geology for colleagues by combining it with Richard Fortey’s wonderful “The Hidden Landscape”, a very readable account of the story of the British landscape and how the underlying rocks and soils affect what we see on the surface (from vegetation to building materials).