3This trusted guide helps you gain a confident understanding of the critical concepts you will need to succeed on certification exams and in your professional career, from code and OSHA requirements to business management and building theory. Now updated to reflect the 2018 International Residential Code and International Building Code, this valuable resource includes useful features like test-taking strategies, answer keys, and access to the DEWALT Online Licensing Exam Prep Course, which simulates the actual licensing exam experience. You�ll also enjoy access to the DEWALT Mobile Pro� app, a construction calculator with integrated reference materials and hundreds of additional calculations available as add-ons (www.DEWALT.com/MOBILEPRO), as well as the DEWALT Contractor�s Exam Preparation (www.DEWALT.com/EXAMPREP) created specifically for the building trades.