Timber tread, fixing plate, countersunk fasteners and fabricated soldier assembly.
Stair-01
Single-spine steel staircase with timber treads, fabrication drawings and connection details.

Stair geometry for fabrication.
Timber treads are supported from a central 120 × 120 × 6 SHS spine, with the lower steps forming a separate site-dependent assembly.
Explore the stair assembly.
Rotate the model to view the treads, supports and central spine.
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Main flight and spine drawings.
Dimensions, support positions and transition details for fabrication.

Tread width, rise, going, overlap and stair angle set out for fabrication; the lower two steps form a separate assembly.
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Spine lengths, support positions and transition geometry prepared for fabrication.
Open full-size drawingSteel assembly and tread connections.
Fabrication drawings and exploded connection detail.

Spine, tread supports, plates and end connections on one fabrication reference.
Open full-size drawing