International Residential Code 2006
The 2006 International Residential Code is a comprehensive code for home building.
This book brings together all building, plumbing, mechanical, and electrical provisions.
It establishes minimum regulations using prescriptive provisions, and is founded on broad-based principles that make possible the use of new materials and building designs.
Often this 2006 version is referenced in the PSI Contractor's Bulletin for a number of current contracting exams. Be sure and have the right text for your specific exam.