14/09/2023
Lets talk about the crisis of RAAC that’s affecting thousands of our UK buildings
What is RAAC?
RAAC, a lightweight precast concrete material, has been causing safety concerns in schools, with over 156 having to partially or completely shut down. The government is still investigating the use of RAAC, so therefore it is likely that the figure is set to rise on other buildings that are affected. RAAC was developed in Sweden in the late 1920s and commonly used in the UK public sector from the 1950s to the mid-1990s. RAAC has a lower structural loading capacity and is less durable than traditional concrete. It also has a lifespan of only 30 years and can be compromised by exposure to water, posing significant safety risks.
Where is RAAC typically found?
It is often found in public sectors like schools, colleges and it is mainly found in roofs, but occasionally can be found in floors and walls
What are some of the common risks associated with RAAC?
One of the primary risks of RAAC is its high porosity, which makes it susceptible to moisture absorption. This can lead to issues such as mould growth, deterioration, and reduced insulation. Additionally, RAAC’s lightweight nature means that its structural integrity can be compromised by exposure to high temperatures, impact, and other factors. The material may also be prone to cracking and surface damage if not correctly installed. While RAAC is generally considered to be fire-resistant, it’s important to note that its fire-resistance properties can vary depending on factors such as material thickness and reinforcement.
What are your thoughts on the crisis?
In light of the RAAC crisis, the construction of schools and other buildings is paramount for Safety, durability, and sustainability, and are at the forefront of this and we know that this figure is set to increase with more buildings affected.
Are you of the view that the main issue with RAAC is related to inadequate product maintenance upkeep rather than the product’s inherent flaws? An article recently published in Construction News has suggested that the substance’s durability is predominantly dependent on how it is reinforced instead of the product’s quality per se. Additionally, the British Association of Reinforcement has recently confirmed the importance of proper maintenance and how this could have affected the life span.
How we can help?
At Mynott Bowers we don’t only measure new builds, we are very often involved in measuring building refurb. and alterations including remedial works, so if you’re a building contractor and find yourself involved with remedial works related to RAAC then contact us.
We are a specialist quantity surveying firm that provides bills of quantities to contractors tendering for construction, fit-out, refurbishment, and civil engineering projects of all sizes. We have a team of QS’s with a wealth of experience in producing bills of quantities to standard and bespoke methods of measurement used in the UK and overseas. Feedback from our regular clients is that they choose us as their preferred QS because of the experience we have in our team which lends itself to the accurate and high in quality bills we produce. Due to our large resources we also offer our clients flexibility to meet tight deadlines so please always contact us if time is of the essence.
You can visit our experience portfolio here: Explore Our Construction Portfolio: Mynotts Bowers (mynottbowers.com)
Contact us today to discuss your project specific requirements!
Contact: Cassie Larham, Business Development Manager
Tel: 07749 139688 or email [email protected]