I struggled with the content in this book. I read it from cover-to-cover. I would understand it more if I practiced the exercises. I could not be a draftsperson, but maybe I added to my vocabulary.
This book has many errors. one example is page 579, SPAN TABLES: The book referances Appendix D, there is no Appendix D. Page 580: "To determine if D is suitable, examine the D value for the 6 X 12." D (deflection) is a calculated value. The value to examine is E (Modulus of elasticity) for the 6 X 12. Be very careful using any of Delmar's learning products.