ITSdesign conforms to API-650 13th Edition and AWWA D100-11. We also have shell design per API 653 ITSdesign is available for WINDOWS7, WINDOWS8, WINDOWS10, and WINDOWS11 operating systems We have Supported Cone Roofs without a Center Column for our carbon steel API 650 Field Erected tanks and AWWA D100 tanks. The design includes the design of the rafter for bending and axial loads, design of the center compression ring, and design of the the outer tension ring. The center ring can be a channel, a flat bar, or a channel shape made from plate. Rafters can be placed on the inside or the outside of the tank roof. We continue to add more options to ITSdesign. ITSdesign automatically checks for the latest update so you do not need to worry whether you have the latest version!    ITSdesign is a visually-oriented tank design program. Comprehensive and easy-to-use, it helps design AWWA D-100-11 water storage tanks and API-650, 13th Edition storage tanks, both in US and SI units. With ITSdesign, time-consumption and variables are reduced. You can also share information easily through individual data storage. Revised input screens, error checking and highlighting provides accurate designs faster, while automatic internet updates always insures your program is up-to-date. Multiuser version available. Try the demo! ITSdesign works with all versions of Windows including Windows11!    For a FREE trial copy of ITSdesign Click Here    ITSdesign Blog We have a Blog where we discuss different aspects of the API-650 code. We provide clarifications to some of the questions we receive from our users and discuss changes in the codes. We will also keep you updated as to what is coming next in ITSdesign. To visit our blog, go to: ITSdesign.blogspot.com

ITSdesign for API-650, 13th Edition is AVAILABLE for DOWNLOAD    API-650 13th Edition and AWWA D-100-11 is included in ITSdesign! Both US and SI units       ITScap Now with ELLIPTICAL Tanks and available for DOWNLOAD