.IN THE COURSE OF A EUROPEAN building boom that began in the 1960s, a novel kind of construction product started to be utilized. Bolstered autoclaved aerated concrete, known as RAAC, is actually pre-cast in a manufacturing plant, commonly right into slabs, just before being taken to a building and construction website where it can be rapidly constructed into part of a property. Although RAAC is actually still used in numerous portion of the globe, Britain is possessing specific troubles along with it. In some structures the component is actually falling apart in 2018 it induced an institution roof covering to crash. A number of universities have actually been shut and other properties, featuring medical facilities, are influenced. This is actually resulting in concern one of the general public and a political migraine for the government. What is RAAC, and why does it become dangerous?