The Straits Times also reported that national water agency Public Utilities Board (PUB) is working with various building managers to implement more flood protection measures.

PUB said it is working with the affected buildings' managers to find out how to help them install more flood protection measures.

According to PUB, Friday's floods were due to prolonged heavy rain that fell directly into Liat Towers' open basement area.

Mr Steven Goh, executive director of the Orchard Road Business Association, said the panel of 12 local and international experts set up in June to look into the floods should give an answer on why the flood happened even after the measures were in place.

paullim@sph.com.sg