Sheet metal contractors consider apprenticeship the best way to learn this trade. An apprenticeship program consists of 4 years of on-the-job training and a minimum of 144 hours per year of classroom instruction. Apprenticeship programs provide comprehensive instruction in both sheet metal fabrication and installation. They are administered by local joint committees composed of the Sheet Metal Workers' International Association, local chapters of the Sheet Metal and Air Conditioning Contractors National Association, or by local chapters of the Associated Builders and Contractors. Courses include sheet metal processes, blueprint reading, parallel line development, trade mathematics, bend allowances, piping practices, welding, soldering, computer-aided drafting, and rigging. For related information and recommended courses to prepare for this occupation, Tennessee high school students may visit the Trade and Industrial Education Standards, Competency Profiles, and Resource Links online. For additional information on education and training in this field, visit the Sheet Metal Workers International Association online.
Military job training consists of 4 to 15 weeks of classroom instruction. Training length varies depending on specialty. Course content typically includes sheet metal layout and duct work; procedures for cutting, brazing, and heat treating; and operation and care of welding, soldering, and brazing equipment. Further training occurs on the job and through advanced courses. The Army, Navy, and Marine Corps offer certified apprenticeship programs for some specialties in this occupation.