The upgrade content: the function integration to Beto reinforced CAD in calculation of internal forces of Baitu structure, operation more direct and convenient. After the upgrade of the software named "plan of water conservancy building design software package (steel CAD)", welcome the new old user download single trial version, users download single official version or the network version, download link address: http://www.slsdsj.com/xiazai/&newsCategoryId=11&comp_stats= comp-FrontNewsCategory_tree01-1276844732928.html.