The 2013 Annual Conference of IPHA was held in Berlin, Germany from May 25 to 28. IPHA, the International Prestressed Hollowcore Association, is an Association dedicated to this special field of precast prestressed concrete. Its history goes back over 40 years. IPHA brings together a wealth of experience in the design, development, production and marketing of hollowcore floors. It justifiably deserves its reputation as a centre of excellence for anyone involved in the industry and for designers of all disciplines. Membership of IPHA is open to manufacturers of hollowcore and also suppliers of equipment , principal material suppliers and specialised software designers. The current membership comprises approximately 50 companies from 25 different countries from across the globe.