The recent accident at the linkway between Orchard Central and Orchard Gateway brings to mind an accident years ago, when a young woman stepped onto an indoor roof panel to retrieve a toy.

She fell through the panel and was badly injured.

It is not easy to visually distinguish between a structurally strong panel that can support human weight and one that is flimsy.

Flimsy structures should be labelled. Perhaps building owners could borrow from the aerospace industry, which labels moving parts of the aeroplane wing with clear "No Step" labels.

Chow Siew Loong