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One Third: Challenges and Lessons in Phius High-Rise Design and Verification

January 5, 2026 12:00 PM - 1:00 PM (EST)

Description

High-rise buildings pursuing Phius certification face unique challenges in achieving energy efficiency, occupant comfort, and sustainability at scale. This session explores the technical details of One Third a 63-story tower in Brooklyn pursuing Phius Zero that is part of a passive house city block. Through This case study will introduce the project’s design and goals, dive into the technical intricacies of the envelope and mechanical systems, and address challenges and innovative solutions from a Phius design and verification perspective.


Speakers:

Prudence Ferreira has 20 years of sustainability consulting experience on large-scale residential, commercial, institutional and manufacturing projects. She is experienced with sustainability program and policy development, building and campus level energy modeling and decarbonization master planning. Areas of special expertise include building science and passive house. She is a long-standing member of  the  Phius Technical  Committee  and  Board  of  Directors, and has been teaching energy modeling, hygrothermal analysis and the Certified Passive House Consultant (CPHC) training in North America since 2011. She has consulted on more than five-million square feet of passive house projects across seven different climate zones and has experience with unique passive house typologies such as curtain wall tower, historic masonry retrofit, medical facilities, labs and schools.

Jen Grosso is the Director of Architecture at Alloy Development, an integrated real estate development company based in Brooklyn. At Alloy she oversees the design and architecture team for their large scale mixed-use projects. Jen is the Vice President of the Phius Board of Directors and a trustee to the Beverly Willis Architecture Foundation.

Learning Objectives:

  1. Understand High-Rise Phius Design Challenges: Identify the unique design and verification challenges for a high-rise mixed-use building pursuing Phius Zero certification, including envelope performance and system scalability.
  2. Explore Technical Solutions for Envelope and Systems: Learn how the project is addressing envelope airtightness, high-performance glazing, thermally broken facade systems, and mechanical systems
  3. Analyze Case Study Insights: Gain insights on overcoming project-specific hurdles through Phius-compliant strategies.
  4. Leverage Multi-Perspective Collaboration: Highlight strategies for effective collaboration between developers, CPHCs, builders, façade fabricators, and Verifiers in high-rise Phius projects and lessons learned for cost-effective, sustainable outcomes.

Continued Education:

  • AIA Credits: 1 LU - TBD
  • PHI Credits: 1 LU - TBD
  • PHIUS Credits: 1 LU

Pricing

Free

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Contact Information

New York Passive House, Inc.
Name: Emma Baron
Email: emma@nypassivehouse.org
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