This packet contains the instructor and trainee manuals for a course dealing with trench protection and principles of pipe laying. Part 1 is the instructor guide for an 80-hour course--12 classroom hours and 68 hours of hands-on exercises. Contents are as follows: a course outline; course schedule; equipment list; material and equipment checklist; audiovisual checklist; site design information; equipment, tools, and materials list by section; checklist of hands-on exercises; and instructor's reference notes for classroom discussion. The course is designed in four sections. Sections I-III cover trenching and excavation safety, pressure pipe laying techniques, and utility line and grade. Each section begins with a 4-hour classroom session followed by three hands-on exercises of 4 hours each. Section IV (gravity flow piping systems) allows the trainee to practice or demonstrate skills acquired during the first portion of the course by actually installing a gravity flow pipe, a pressure water pipe, a storm drain pipe, and constructing a manhole and/or inverts. These exercises are designed for 10 hours each and the trainees rotate through each task. Part 2 of the manual contains assignment sheets for all sections. Part 3 is the trainee manual. Each section contains objectives, terms and definitions, informative material, and assignments sheets. Appendixes include a glossary of terms and abbreviations and Occupational Safety and Health Administration construction standards for excavations. (YLB)