SDEF Overview
In 1986, the US Army Corps of Engineers recognized the need for a Standard Data Exchange Format (SDEF) to facilitate the exchange of data among contractors using various project management tools. The format chosen was a 132-character per line, fixed-length ASCII file, with data items, field positions, and field lengths explicitly defined by the SDEF specification.
The complete SDEF specification document is available online from the US Army Corps of Engineers official library for Engineer Regulation ER 1-1-11 dated June 15, 1995.
Last Published Monday, July 14, 2025