Following a sudden collapse of a RAAC structure in 2018, the Standing Committee on Structural Safety (SCOSS) issued a safety alert ‘Failure of Reinforced Autoclaved Aerated Concrete Planks).
RAAC has proven to be not as durable as other concrete building materials. It has a variable service life which is influenced by many factors. It can fail suddenly, hence the recent action by the UK Government.
There is a risk RAAC can fail, particularly if it has been damaged by water ingress from leaking roofs which causes corrosion of the reinforcement, excessive thermal degradation, or if it was not formed correctly when originally made.
Poor original installation or cutting the reinforcement bars on-site, can dramatically reduce the end bearing capacity of the planks.Contact Us