An engineer with the Ghana Institution of Engineering (GhIE), Emmanuel Aiddoo, has revealed that preliminary site investigations into the collapsed building at Accra New Town identified the use of multiple types of rocks in the concrete mix.

Speaking on The Pulse, Mr Aidoo said the inconsistent use of aggregates raises concerns about the structural integrity of the building.

“One typical thing we observed was that, if you look at the rocks, there are different types and sizes that were used. There are 6 mm and 12 mm aggregates. We took measurements of these, but it is always important that first responders at such sites include engineers,” he said.

He noted that samples have since been collected for laboratory analysis to help determine the precise cause of the collapse.

However, Mr Aidoo expressed concern that the clearing of debris at the site could hinder a comprehensive assessment, as it limits the ability to fully examine the range of materials used across different levels of the structure.

He added that despite these constraints, the engineering team will continue efforts to establish the factors that led to the collapse.