“According to the Daily Herald, between 1,200 and 1,500 people attended the DuPage Area Engineers’ Week expo last weekend at IIT West in Wheaton.  The expo featured a lecture entitled “5,000 Years of Structural Engineering in 30 Minutes,” presented by structural engineer Brian Dekker, P.E., principal at Robert Miller & Associates, a fie throughout history.  One of the interactive parts of the lecture involved children volunteering to put together a real masonry arch constructed with AAC (autoclaved aerated concrete) blocks provided by International Masonry Institute (IMI).  Miniature bricks were also used to illustrated buttressed construction and its resistance to wind loads. The session was Engineer's Week 1moderated by Larry Novak, P.E., president of the Portland Cement Association and lead structural engineer on the world’s tallest building, the Burj Khalifa, designed by SOM.” – International Masonry Institute