Contact Hour Total:64 Introduction to reading and interpreting working drawings. Includes symbols and abbreviations and the use of sketching techniques to create isometric and orthographic drawings of drain, waste, vent, hot and cold water, and gas piping components. Prerequisite(s): None Corequisite(s): None Co-enrolled: None Course Fee:100 Texas Higher Education Coordinating Board Workforce Education Course Manual (WECM) course