CIRIA is the construction industry research and information association. It is an independent, not-for-profit, member-based research organisation that exists to champion performance improvement in construction. Since 1960 CIRIA has delivered support and guidance to the construction, built environment and infrastructure sectors. CIRIA works with members from all parts of the supply chain to co-ordinate collaborative projects, industry networks and events. High quality guidance is delivered to industry through a range of performance improvement activities. For more information on CIRIA’s products and services please visit www.ciria.org.