Bristol Aggie Named 2022 BE+ Green Building of the Year

Bristol Aggie Named 2022 BE+ Green Building of the Year

Award

We are thrilled to announce that Bristol County Agricultural High School received the coveted Green Building of the Year award at the annual BE+ Green Building Showcase! In the largest ceremony since the national Greenbuild conference in 2017, over 225 people gathered to celebrate leading projects in the movement toward a more sustainable and regenerative built environment.

Representing a shift from an agriculture-based curriculum toward one rooted in science and environmental education, the renewed Bristol Aggie campus is both a place of discovery and an instructional tool through its highly sustainable design. From an intensive green roof that doubles as an outdoor classroom to exposed timber structures in three of four new construction buildings on campus, students are invited to engage with the architecture and green technologies on display.

Focus areas on carbon, energy, water, wellness, and equity drove the project and manifest in both the building and landscape design.

Water conservation and reuse strategies reduce campus water usage by 50%

Close ties between the school and the environment are reinforced by outdoor learning and gathering spaces

Heavy timber structures sequester 75 metric tons of carbon, while renovating a central academic building avoided 744 metric tons in carbon emissions

All new buildings are designed PV-ready

“The Bristol County Agricultural High School checked so many boxes for us… aggressive sustainability, a strong community connection, a focus on carbon reduction, a teaching tool …all on a limited, public-school budget.”

Jury Comments | Built Environment Plus

Renovate or Build New: A Life Cycle Comparison of Two Academic Buildings

Renovate or Build New:
A Life Cycle Comparison of Two Academic Buildings

What does a direct comparison between renovation and new construction reveal about a building’s environmental impact and how can this data inform future design decisions?

HMFH sustainability leaders Suni Dillard and Alexandra Christiana addressed these questions with Carrie Havey of The Green Engineer at USGBC Live’s Boston Forum, using a case study of two buildings at Bristol County Agricultural High School to compare the environmental impact of the products associated with renovation vs. new construction.

In recent years, there has been a push in the design industry to reuse existing buildings as a strategy to limit the greenhouse gas emissions that arise from the manufacturing, transporting, installing, maintaining, and disposing of building materials ₁. The idea seems simple: reuse buildings and reduce carbon emissions. However, the answer isn’t always so straightforward. How a building is reused or built new significantly affects its carbon footprint, so it is important to understand the impact of all design decisions in order to create environmentally responsible buildings.

While renewing and expanding the Bristol County Agricultural High School campus, HMFH had the unique opportunity to design two buildings with comparable program and scale. Using Tally, a Revit plugin that quantifies the environmental impact of building materials ₂, we conducted a life cycle assessment analyzing the products specified in both the renovation of Gilbert Hall, a 72,000 SF academic building from 1935, and the new Center for Science and the Environment (CSE), a 73,500 SF academic building, to weigh the benefits of renovations vs. new construction.

A life cycle assessment (LCA) is an analysis of a project’s impact throughout its lifespan, from the gathering and transportation of raw materials, to reuse after a building’s end of life. A completed LCA evaluates factors including global warming potential, acidification, eutrophication, smog formation, ozone depletion, and depletion of nonrenewable energy sources. In North America, there is currently not enough data to include site or mechanical, electrical and plumbing (MEP) systems in a LCA despite their significant impact on a building’s sustainability. Therefore, our analysis of Gilbert Hall and the CSE focuses on the environmental impact of building materials.

By comparing data from the LCA cradle to gate stages for Gilbert Hall and the CSE, we were able to review the impacts of raw material extraction, manufacturing, and transportation for each project and learn which building elements and product categories are most beneficial in the design of a renovation vs. new construction project. This comparison looks specifically at global warming potential—a relative measure of greenhouse gas contribution over a 60 year-time horizon. For example, the LCA shows the renovation of Gilbert Hall has a 28% reduction in overall global warming potential (calculated in kg C02e) in the cradle to gate stage compared to the newly built CSE.

Building Elements

CSE: 353.3 kg CO2eq/m²
GH: 259.41 kg CO2eq/m²

The newly constructed CSE features a highly efficient exterior wall design, while Gilbert Hall excels in its minimal impact by reusing the existing structural elements.

Metals

CSE: 173.31 kgCO2eq/m²
GH: 230.64 kgCO2eq/m²

The lack of concrete used in GH’s renovation resulted in the majority of its material impact being attributed to metals within the enclosure.

While renovation is often the most sustainable option, a comprehensive understanding of each design element’s impact at all phases of a project promotes the most environmentally responsible choices. Life cycle assessments provide concrete data that can guide clients through a sustainable building process by weighing the impact and effectiveness of each decision over the course of the project. Where do we go from here?

Suggested Workflow
  • Pre-Design: Set benchmarks and targets, and demand low carbon materials/transparency
  • Schematic Design: Analyze, track and compare embodied carbon against benchmarks and achievable low carbon goals
  • Design Development: Prioritize healthy materials, create low carbon specifications, and conduct a carbon estimate
  • Construction Documents: Continue to  refine low carbon specifications, and require the general contractor to prepare a carbon estimate for construction
Suggested Carbon Reduction Strategies
  • Reduce the use of concrete, or substitute fly ash and/or slag for cement in the concrete mix*
  • Substitute precast hollow concrete floors for composite metal deck floors
  • Substitute cross-laminated timber for metal deck floors
  • Utilize glulam columns and beams in lieu of steel columns and beams

*Use of this as a replacement needs more study due to concern over material health issues

 

  1. Carbon Leadership Forum https://carbonleadershipforum.org/embodied-carbon-101/
  2. Autodesk https://apps.autodesk.com/RVT/en/Detail/Index?id=3841858388457011756&utm_medium=website&utm_source=archdaily.com.br

Creating Space for Student Well-being

Creating Space for Student Well-being

Article

by Matt LaRue
originally published to Essentials

Motivation, mission, and means were the Town of Weymouth’s springboard for planning and constructing the Maria Weston Chapman Middle School, whose doors opened to 1,470 students in grades 6, 7, and 8 on September 6, 2022. The $164.2 million facility replaced the outdated Chapman School on the same site, and at 252,170 square feet, it is now the largest middle school in Massachusetts. Robert Hedlund, Weymouth’s mayor, declared it “The most significant capital project that the Town has ever undertaken in its history.”

An idea gets traction

The project began in April 2015, when the town submitted a statement of interest to the Massachusetts School Building Authority (MSBA). In November 2016, the MSBA board invited Weymouth to conduct a feasibility study. After hiring HMFH Architects as the project designer and Hill International as project manager, the $1 million study commenced and ultimately presented a solid rationale for building a new facility instead of renovating the existing one.

With project goals and objectives firmly in place, schematic design began in 2018. The “New Chapman” team — the Weymouth School Building Committee, HMFH, and Hill — asked hard questions: How can a very large school be made welcoming to students? And how can it foster smaller learning communities, encourage meaningful collaboration among staff and students, and increase social-emotional wellness for its users?

Using multiple education planning strategies to increase student wellbeing in a large school

In response to concerns over the size of the school, educational planning and academic teaming spaces were structured to form concentric rings of support around each student. The space organization strategy progressed from the whole school to grade levels, and then to smaller academic neighborhoods. The administrative structure within each neighborhood consists of multiple teams and classrooms. The 7th and 8th grades have two teams with five educators in each neighborhood focused on five courses of study. Grade 6 has ten small teams in the neighborhood to compensate for the transition from elementary to middle school and a change in curriculum. The organizational strategy around teams provides equity and a “home-base” identity for all students. It is also where they spend much of their school day and is the central planning unit for the whole school.

The second ring of support pairs two teams in a neighborhood, providing expanded resources, planning and supervision. The neighborhoods are grouped around a collaborative area consisting of a double height presentation space where students can share their ideas and an adjacent outdoor classroom for messy work and learning in nature.

Building design that supports student career path development and community needs

Creating an academic environment that checked all the boxes for fostering students’ academic, physical, social, and emotional well-being and met MSBA’s and the Massachusetts Department of Elementary and Secondary Education’s requirements was the team’s highest priority.

As a feeder for Weymouth High School’s robust career and technical education programs, Chapman’s curriculum and layout are centered around unique “exploratories” — elective tracks that focus on modern, STEAM-driven paths in career tech, ranging from robotics and fabrication to culinary arts and broadcast media. Specialized lab spaces on each floor support this exploration and act as links between each of the classroom wings and the 9,500-square-foot “Town Square” cafeteria.

Centrally located and bracketed by the three academic wings and the gymnasium, the Town Square was described by John Sullivan, chair of the Weymouth School Committee as “The crossroads of the school, and the place where students will break bread together and build community.” This pivotal space, along with the gymnasium, accommodates public use of the school after hours. A state-of-the-art, 850-seat auditorium serves the middle school’s active drama program as well as high school and community theater groups. The new building’s design also provides for additional public uses; a 755-square-foot community wellness suite, which has a separate entrance, adds to the 1,000 square feet allotted to the nurse-staffed medical suite.

Student health and wellbeing by design

Physical fitness is fundamental to the health and wellbeing of both mind and body, and Chapman Middle School’s design amplifies opportunities for exercise from the outside in, starting with a 0.5-mile fitness loop encircling the 15.87-acre site. Along the fitness loop are three exercise stations and two structured fitness areas, one of which features a multi-game court, the other created according to Universal Design principles. All facilities are open for use by the community. Indoors, the 18,414-square-foot physical education wing — the only portion of the old school that was retained and repurposed — encompasses an 11,435-square-foot gymnasium, a fitness studio with climbing wall, weight room, and ancillary space.

Close attention was paid to the curriculum’s special education component, with significantly more space than the original facility dedicated to these offerings and supports, encompassing a variety of dedicated rooms interspersed throughout the building on both floors. The goal of these spaces was to provide varying levels of support for the children within the program, and their size, configuration, and location promotes flexibility and heightens comfort. There are small and large group rooms, two de-escalation rooms, physical and occupational therapy, sensory and transition rooms, and dedicated spaces for a communication enhancement program, life skills learning, social-emotional learning, academic support, and an administrative suite.

Additional means of support and grade level identity were realized through the use of color: Each of the three academic wings was assigned a different color per floor. Further characterizing each wing is a unique, bold, and colorful 12-foot by 25-foot graphic defining a grade theme: empathy for 6th grade, diversity for 7th grade, and inclusion for 8th grade.

The architecture itself sparks a sense of wonder through soaring 30-foot-high spaces with second-floor pedestrian walkways open to the Town Square, and a view into exploratory labs that face it. As important as natural light is to productivity and well-being, the design team recognized that it can also be problematic. To counter glare on teaching surfaces, exterior windows have fixed sunscreens tailored to each solar orientation.

It took a village

More than 50 different contractors, companies and consultants were a part of the new Chapman Middle School project.  “It is the best team I have ever been a part of,” said Ted Langill, chair of the Maria Chapman Middle School Building Committee. “This was an enormous project, with many obstacles, that had to be completed under a tight deadline. There was little room for error. Hill, HMFH Architects and [construction manager] BOND Building Construction were outstanding in managing this project and achieving all our goals.”