structural design Civilax - The Civil Engineering Knowledge Base is the premier resource for practicing civil & structural engineers. It engages, enlightens, and empowers engineers through interesting, informative, and inspirational content. Civilax's downloadable resources includes structural analysis tools, structural design calculations, spreadsheets for structural engineers and structural software for evaluation. Currently Civilax book library contains 4000+ structural books and number of publications in Civil & Structural Engineering. While our main focus on Civil & Structural Engineering, Civilax Knowledge Base extends to Geotechnical Engineering, Earthquake and Seismic Engineering, Construction, Project Management and many other sub-disciplines of Civil Engineering without boundaries.