Working in high-rise construction you will frequently experience riser voids: openings left through multiple floors to allow for mechanical and electrical services. These voids cause a huge safety concern, with falls from a height being the largest risk of fatal accidents for workers.
Even a small object dropped from height has the potential to cause a fatality, with an object weighing only 500g building up the same impact energy as a 75kg object when dropped from 15m.
Riser grating is a solution to these risks.