Authors administrator @engineersday admin Peter Munyasi Samuel Kahara Software Engineer , Proudly Kenyan , Man Utd Die Hard @samsoftk Anthony Fasano Buddy Cleveland Carol A. Metzner One Evergreen David Gentry Doug Fred E.I. @engineersday Dr.Martin Jay Hein PE Karl Stephan Matt Barcus Sajid Khan Sophia Foster Staci Thomas T. Brian Jones Tilt-Up Concrete Association Ken James TWIG