A Structural Steel Staircase (Preliminary)

The followings are some quick renders of an exterior structural steel staircase. The staircase is not part of the original building design, it was erected so people could directly access the roof top from outside of building.

The staircase design is pretty standard: UC columns and UB stringers with chequered plate treads, C-channel beams to support RHS bearers and chequered plate that form the landing, and CHS handrails and balusters.

A fly-through animation of this model is on this page, and a "construction sequence" on that page.