In response to The Straits Times’ query, HDB said the slab dislodged while being lifted at the Bedok South Blossoms Build-To-Order project site, and landed on the trailer it was being lifted from.

The shape and size of a slab or panel has much to do with susceptibility to cracking. Square shapes, for example, resist cracking the best, while rectangles with long, narrow sides and odd-shaped ...