This publication provides introductory technical guidance for civil engineers and other professional engineers, construction managers and maintenance managers interested in pavement overlays. Here is what is discussed: 1. GENERAL , 2. DEFINITIONS AND SYMBOLS FOR OVERLAY PAVEMENT DESIGN, 3. PREPARATION OF EXISTING PAVEMENT, 4. CONDITION OF EXISTING RIGID PAVEMENT, 5. RIGID OVERLAY OF EXISTING RIGID PAVEMENT.