ยง 241-a. Protection of workmen in or at elevator shaftways, hatchways
and stairwells. Any men working in or at elevator shaftways, hatchways
and stairwells of buildings in course of construction or demolition
shall be protected by sound planking at least two inches thick laid
across the opening at levels not more than two stories above and not
more than one story below such men, or by other means specified in the
rules of the board.
Structure New York Laws
Article 10 - Building Construction, Demolition and Repair Work
240 - Scaffolding and Other Devices for Use of Employees.
241 - Construction, Excavation and Demolition Work.
241-A - Protection of Workmen in or at Elevator Shaftways, Hatchways and Stairwells.