Willis H. Wagner was Professor Emeritus for the Department of Industrial Technology at Iowa State University. Mr. Wagner earned a bachelor of science degree from Central Missouri State University and a master of science degree from the University of Missouri. He worked in industry as a drafter and woodworker, and taught at the high school and collegiate levels. Mr. Wagner was a member of IAITA and ITEEA, and an honorary member of the Waterloo Technical Society. Howard Bud Smith spent most of his career as a magazine and textbook editor. He also worked as a carpenter for several years while earning a PhD in journalism from Marquette University. Mr. Smith is the author or coauthor of Energy and Understanding Technology, and he has published articles in a variety of magazines over his career. He is currently retired. Mark W. Huth brings to Modern Carpentry a great deal of construction education experience from multiple perspectives. Besides working as a carpenter and contractor, he has worked as a carpentry instruc- tor and as a consultant to both secondary and postsecondary educators. Mr. Huth has also written text- books in the areas of construction print reading, construction principles, and construction math. About the Authors Precision Exams Certification Modern Carpentry is your complete guide to understanding the knowledge and skills necessary for a career in the field of carpentry. In addition, its thorough cover- age of the industry should help prepare you for any number of construction certi- fications. Goodheart-Willcox is pleased to partner with Precision Exams by correlat- ing Modern Carpentry to Precision Exams’ Carpentry Standards. Precision Exams Standards and Career Skill Exams were created in concert with industry and sub- ject matter experts to match real-world job skills and marketplace demands. Stu- dents that pass the exam and performance portion of the exam can earn a Career Skills Certification™. To see how Modern Carpentry correlates to the Precision Exams Standards, please see www.g-w.com/ modern-carpentry-2016 and click on the Correlations tab. For more information on Precision Exams, please consult the accompanying Modern Carpentry instructor resources and www.precisionexams.com. Copyright Goodheart-Willcox Co., Inc. iv