Good crowd last night at the monthly CSI Iowa meeting. I gave a talk on materials in Chicago skyscrapers, which seemed appropriate given the importance of specifications to material selection and installation. CSI has sponsored our annual Comprehensive Design award for eight years now, and they’ve been great friends of the program, so it was nice to be the entertainment for the evening. And, have to say, great questions afterwards–a knowledgeable bunch. Thanks to Wayne Smith, Steve Watrous, and particularly Ann Sobiech-Munson, longtime colleague, who invited me to give the talk.