Based on the 2018 model codes, including the IRC, UPC, & UMC, and the 2017 National Electrical Code. These are the codes in most common use today. 98 illustrations provide graphic explanations of code issues, and 41 tables put essential information at your fingertips. Major changes are highlighted in the book for all four major disciplines – building, plumbing, mechanical, and electrical. Perfect for field use or in the office.