What began as a NASSCO member benefit nearly two decades ago has become a gift to the entire trenchless technology industry. Since 1990, NASSCO has published Specification Guidelines for a variety of applications such as CIPP, fold-and-form, smoke testing, CCTV, cleaning, and more. Comprised of specifications submitted by NASSCO members, these guidelines were designed to give members a reference point from which to apply their own engineering judgment to specific sewer rehabilitation projects.Copies of the SG-12 and earlier versions were provided to all NASSCO members as part of a membership package. Additionally, the updated guidelines were sold to members, first
