Design study
A-102 · First floor

U-stair around the void

Villa & service block stairwell, 6,000 × 4,250 mm. Drag to orbit, scroll to zoom, right-drag to pan.

Structure

Balustrade

Glass

Approving authority

Risers, floor to floor

Treads, top flight

Treads, arrival flight

Step length

Block end outside glass

End stagger, alternate blocks

Solid base steps

Floor to floor

Stairwell soffit above FFL1

Second handrail on the wall side

Treads and landings

Metalwork (handrail, standoffs)

Base steps stay in stone to match the reference render. Finishes are visual only; the code checks do not depend on them.

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CAD files (validated)

Stacked blocks · 1200 glass + rail — STEP · OBJ

Stacked blocks · 1065 cap rail — STEP · OBJ

Floating treads (alternative) — STEP · OBJ

STEP files are Y-up with the open side facing +Z, so the SolidWorks front view looks at the stair entrance. Every solid was checked for clashes and for a load path back to a slab, wall or column: 0 clashes, 0 unattached parts.

Dubai Building Code 2021 · Part K

What A-102 shows. Three flights and two square landings drawn at 350 mm tread lines. Over the 5,650 mm rise that gives about 29 risers of roughly 195 mm, above the 180 mm limit, so the stair as sketched cannot be built as drawn. The drawing also shows no guard along the first-floor slab edge, which is a 5.65 m drop; the model adds a 1,200 mm glass wellhead guard.

Assumed until confirmed. Ground floor at ±0.00 (A-102 gives FFL +5,650 only). Stairwell soffit at FFL1 + 3,300. Walls as drawn: 250 mm block between RC corner columns.

Clause numbers refer to the Dubai Building Code 2021, Part K. Trakhees projects add the Blue Code §13 stair limits. Structural values are indicative only and are for a structural engineer to confirm.

CAworks Designer Glass & Steel Works · Al Quoz, Dubai · team@caworks.co · +971 50 636 9524