The monolithic volume is constructed of pre-crafted slabs of varying sizes that are supported with pre-fabricated folded metal plates, which then together are dry-assembled on-site. Soft transitions from small to large components create curved surfaces out of the hard stone. The focal points of these gradients define the entrances and openings, morph the building skin, adjust the skyline, and connect the backyard landscape to the staircase all the way to the rooftop. Some further design strategies are: _ Blurring the threshold of the building envelope to orient the views up toward the sky and the mountain chains of Tehran in balconies or iwans, and down toward the street behind the panoramic windows of the multi-purpose working spaces; _ Activating the backside of the project by connecting it to the rooftop on one side, and dissolving it softly to an animated carpet-like landscape that embraces the only existing tree and it integrates new plants; _ Designing the given building block as a volume rather than separated two-dimensional facades.

This integration is done through the three-dimensional extension of the east and west surfaces to the front and back, as well as the roof as the fifth elevation and the back yard carpet; _ Controlling the assembly tolerances by compensating the minor deviations in the hand-cut stones with the higher accuracy in the production of the folded exposed metal plates; _ Minimizing the material leftovers by discretizing the continuous surfaces into elements with varying sizes ranging from 60mm or extra-small to 1430mm or extra-large; Information and credits: Title: SOFTSTONE office building | Design: SETUParchitecture studio | Design date: 2014-17 | Construction date: 2015-18 | Architect in charge: Sina Mostafavi | Construction manager: Alireza Salami | Client and owner: Majid Ghavifekr | Design team: Sina Mostafavi, Banafsheh Darvish, Ken Chen, Hamid Khaki, Mohsen Nouri, Ashkan Rezaee, Guo Xi, Niusha Zaribaf | Architectural representation team: Adib Khaeez, Faezeh Sadeghi, Masoud Barikany | Main contractors: Mehdi Yamininejad, Mehdi Bayat _Mokaab Group | Construction superintendent: Amin Firouzpour | Construction supervision: Amin Firouzpour, Nasir Damavandi Alireza Salami, Sina Mostafavi | Stonework contractor: Borhan Nouri | Structural design: Amin Nekooyian | Electrical consultant: Kamran Naraghipour | Mechanical consultant: Bahram Eksiri | Electrical work contractor: Mehdi Janbakhshi | Mechanical work contractor: Mojtaba Moayeri | Woodwork contractor: Ali Ghorbani, Mohsen Soleimani | Elevator consultant: Technoterm Co. | Doors and windows: Alumin Co. | Glass and handrails: Venus Glass Co. | Videography Studio Payen-e-Khosh | Photographs: Parham Taghioff, Bamdad Nourian Credits: - SETUP architecture studio - Construction Manager - Alireza Salami - SETUP architecture studio - Architect In Charge - Sina Mostafavi