Question:
A sewer line is to be connected to a school. This work will be carried out in a 2.4 meters deep excavation and will be routed through the playground, which was once a Railway station.
(i) Outline the precautions to be taken before carrying out the excavation work.
(ii) State the control measures needed to make sure safety during the excavation work.
(iii) What precautions are to be taken to prevent accidents to public who might be tempted to gain access to the site?