The Joint Contracts Tribunal, also known as the JCT, produces standard forms of contract for construction, guidance notes and other standard documentation for. The Joint Contracts Tribunal (JCT) suite of contracts is a set of standard documents used by the building industry to help deliver your project. JCT · Standard Building Contract · Intermediate Building Contract · Minor Works Building Contract · Major Project Construction Contract · Design and Build Contract. Since 1931 JCT has produced standard forms of contract, guidance notes and other standard forms of documentation for use by the construction industry. JCT contracts facilitate the process of constructing buildings.