ABSTRACT
In purpose-built blocks of flats, office blocks, public buildings and the like, flights of stairs and landings are usually formed with steel-reinforced concrete, as opposed to purpose-made timber staircases used in dwellings for one-family occupation. This is because reinforced concrete stairs, firstly, give greater fire-resistance required for buildings with multiple occupancy and/or usage; secondly, are more durable and load-bearing for greater and heavier usage; and, thirdly, cost far less compared with similar stairs and steps of yesteryear that were made of quarried stone. Concrete stairs may also be finished in their first- formed material, or may be designed to have various other material finishes added to their treads and risers.
