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The design intention is to overcome the fundamental constraint of building within a narrow lot while simultaneously implementing a sustainable modular system able to be replicated on similarly sized lots for minimal construction costs. In addition, and most importantly, our intention is to create a healthy open environment full of light and air that residents can be benefit from. We aim to achieve this though the following key ideas:

• Use laminated heavy timber beams and columns for the primary structure and aim to use less than 15% of concrete, masonry and steel combined. (Fig.2)

• Create an independent structural system where floor and roof joists run perpendicular to the street, eliminating the need to build out a load bearing wall at the lot line on either side and/or anchor to the existing party wall. This allows for the full use of the width of the lot, creating space for the minimum dimensional requirements for habitable rooms in New York City of eight by eight feet, as well as the required light/air and minimum wall thickness to
support, insulate and enclose rooms. (Fig. 3)

• Minimum disruption of existing sub-grade and minimum need for excavation and underpinning. (Fig.2)

• The proposed structural system provides spacing for the installation of pre-manufactured circulation core and MEP shafts and chases. (Fig 4)

• Against the conventional notion of minimizing stair size and circulation core, we believe that an open and enlarged stair shaft with a roof skylight will help enhance the typical dark hallway experience. The tenants enter the building and immediately see natural light entering from the stair shaft. The stairs are specifically designed to meet egress code, and the floor to floor height is defined by the maximum number of treads and rises allowed on each stair. This module is repeated throughout the entire building

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