Aesthetic Value: Client required an upscale classical European look with minimalist features. Spiral became dramatic feature in customers home office. Stair Safety: All the local municipal codes were followed and met. Quality of Workmanship: Twelve sided mortised center column with minimalist engineered outside sawtooth stringer which is a very rare type of spiral stair. Technical Challenge: It was the owners lack of vision at beginning of project that challenged us to make numerous aesthetic suggestions and mock ups until owner finally feel in love with the sawtooth spiral with 12-sided column design.