External staircase with seismic analysis

Detailed design and shop drawings of a steel staircase added to an existing building, carried out taking seismic actions into account. We designed a frame structure with stair flights and four levels of working platforms, braced horizontally and vertically, fixed to the foundation slab by bonded anchors. The structure had to be designed for seismic conditions — both the main sections and the anchorage.

Year

2026

MJKM role

Detailed design and shop drawings of the steel structure

Type

Steel frame with stair flights, platforms and bracing

Material

Steel S235JR and S235JRH, chemical anchors

Dimensions

1.8 × 5.0 m, height 12 m