Subsequent to the 9/11 terrorist attack on the World Trade Center, a destruction site observation building was erected to enable the public to view the site. The access stairway, built with aluminum diamond pate stair treads, became a slip-fall hazard. The City of New York had RezCast® commercial grade stair tread covers installed over the diamond plate treads to add slip resistance and visual safety to the stairs.
In the first year after the platform was built, an average of 5000 people a day used those steps to access that viewing platform.
5000 people per day x 365 days = 1,825,000 people per year, and that was just in the first year! That’s a lot of traffic! How many people use your stairs?