This book summarises the advice available from the Fire Research Station to designers of Smoke and Heat Exhaust Ventilation Systems (SHEVS) for atria and other buildings. It aims to provide practical guidance on the design of smoke-control systems, reflecting current knowledge and based on the results of research where available, including as yet unpublished results of experiments. It also draws on the authors’ cumulative experience of design features required for regulatory purposes in many individual smoke-control applications. Many of these design features have evolved over several years by consensus between regulatory authorities, developers and fire scientists. 146 pages.