The Florida Construction Industry Licensing Board (CILB), under the Department of Business and Professional Regulation (DBPR), administers this licensing program for the Certified Underground Utility and Excavation Contractor (CILB 6-N) classification. A license is required for projects including the construction, installation, and repair of main sanitary sewer collection systems, main water distribution systems, and storm sewer collection systems, whether accomplished through open excavations, directional drilling, auger boring, jacking and boring, or other trenchless technologies. The trade license is part of a two-part examination process, with candidates required to pass both the Trade Knowledge exam and the Business and Law exam, each with a minimum passing score of 75%.
The trade exam is an open-book test. Core subject areas include water distribution systems, sanitary and storm sewer installation, excavation and trenching safety (OSHA 29 CFR 1926), pipe installation standards (including Ductile Iron Pipe and PVC guidelines), and Florida-specific regulations including Chapter 556 (the Underground Facility Damage Prevention and Safety Act) and the Florida Building Code. Let this practice book be your partner in achieving that goal. Whether you are an experienced excavation professional, a utility contractor seeking certification, or a construction professional expanding into the underground sector, this collection of unofficial self-practice questions and detailed answers provides the focused preparation you need.
