Spiral Stairs

Floor height: 1980mm (77.95”)

Stairs diameter: 1800mm (70.87”)

Step Qty : 10+1 (final step is lower than celling floor)

Step height: 180mm (7”)

Step length: 900mm (35.43”)

Center stringer: Dia 108mm Carbon steel

Side stringer: 6+6mm box to insert glass

Tread:50mm

Railing height : 914mm

Railing : 12mm glass clear

Top handrail : No