v Copyright Goodheart-Willcox Co., Inc. Architectural These problems address architectural and structural drafting and design applications, such as fl oor plans, furniture, and presentation drawings. Piping These problems address piping drafting and design applications, such as tank drawings and pipe layout. General These problems address a variety of general drafting and design applications. These problems should be attempted by everyone learning advanced AutoCAD techniques for the fi rst time. NOTE NOTE Some problems presented in this text are given as engineering sketches. These sketches are intended to represent the kind of material from which a drafter is expected to work in a real-world situation. As such, engineering sketches often contain errors or slight inaccuracies and are most often not drawn according to proper drafting conventions and applicable standards. Additionally, other drawings may contain errors or inaccu- racies. Errors in these problems are intentional to encourage you to apply appropriate techniques and standards in order to solve the problem. As in real-world applications, sketches should be considered preliminary layouts. Always question inaccuracies in sketches and designs and consult the applicable standards or other resources. Companion Website Companion Website The companion website is located at www.g-wlearning.com/CAD/. Select the entry for AutoCAD and Its Applications—Advanced 2020 to access the material for this book. The companion website contains the exercises for each chapter and the appendix material for the textbook. As you work through each chapter, exercises on the companion website are refer- enced. The exercises are intended to be completed as the references are encountered in the text. The solid modeling tutorial in Appendix A should be completed after Chapter 14. The surface modeling tutorial in Appendix B should be completed after Chapter 10. The remaining appendix material is intended as reference material. Also included on the companion website are the exercise activities. The exercise activities are intended to supplement the exercises on the companion website. These activities are referenced within the appropriate exercises and can be completed as additional practice. Additionally, full-color images of fi gures illustrating key topics in Chapters 17, 18, and 19 are provided in electronic format on the companion website. Figures with a corre- sponding color image on the companion website are identifi ed with a reference above the fi gure caption. The full-color images are intended to enhance visualization and under- standing of important topics relating to materials, lighting, and rendering and presentation. Online Instructor Resources Online Instructor Resources The Online Instructor Resources provide support materials designed to help instructors effectively plan and teach AutoCAD courses. Support materials are avail- able in one accessible location and include tips for the instructor, answer keys, exercise and drawing problem solution fi les, course syllabi, and a sample course exam. Also included is assessment software with question banks featuring hundreds of questions corresponding to each chapter in the text. The Online Instructor Resources are avail- able as a subscription and can be accessed at school or at home.