Singapore legislation
Regulation 52
of Workplace Safety and Health (Construction) Regulations 2007
Regulation 52
Floor openings for debris removal
Subregulation 1
It shall be the duty of the occupier of a worksite to ensure that every opening used for the removal of debris on every floor in the worksite which is not closed to access, except the top or working floor, is provided with an enclosure from floor to ceiling.
Subregulation 2
Where it is impracticable to provide an enclosure under paragraph (1), it shall be the duty of the occupier of the worksite to ensure that the opening is so barricaded that no person has access to within a horizontal distance of 6 metres from any opening above through which debris is being dropped.