This highlighted and tabbed 2018 International Mechanical Code book will help you find the answers quickly. This book is highlighted and tabbed for the PSI / NASCLA Contractor exam as well as all ICC, State and local building inspector exams. Description of the book - 

Addresses the design and installation of fuel gas systems and gas fired appliances through prescriptive and performance requirements. For the most current adoptions details go to International Code Adoptions

Key changes include: