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Rammed Earth Walls Support Central Nucleus in Sustainable Living Space

Authors:
Francisco Agudelo, Santiago Berruti, Joaquín Quintana
Rammed Earth Walls Support Central Nucleus in Sustainable Living Space
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Constructed with rammed earth walls, this design integrates a central nucleus that facilitates efficient air circulation and sunlight capture, creating a sustainable living space with distinct zones for work and rest.
5 key facts about this project
01
Rammed earth walls enhance thermal mass and energy efficiency.
02
The central nucleus design separates social and private areas.
03
Orientation of walls maximizes natural light and passive heating.
04
High-efficiency fireplace improves comfort and air quality.
05
Rainwater collection system supports sustainable resource use.

The design centers around a free plan concept with a central nucleus that plays a crucial role in meeting the functional needs of a home. Located in an environment that values sustainable living, the layout offers two spacious zones that maintain privacy and usability for various activities. This thoughtful organization avoids the need for extra walls, allowing for a more open and inviting atmosphere.

Central Nucleus

The nucleus serves two primary functions. One side is dedicated to a kitchen that also acts as a dining area and workspace. The other side features a high-efficiency fireplace, which caters to the living room and bedroom. This arrangement maximizes the use of space while still allowing for social interaction among residents, making daily life more comfortable.

Air Circulation and Comfort

Attention to air circulation significantly contributes to the design's comfort. The nucleus is intentionally lower than the adjoining ceiling, creating a flow of fresh air throughout the home and improving fireplace performance. This detail shows a clear understanding of thermal dynamics, enhancing energy efficiency and overall livability.

Material Use

Prefabricated components and locally sourced earth form the foundation of this project. The use of rammed earth gives structural strength to areas designated for living and working. Walls made from rammed earth are carefully positioned to catch sunlight, which helps to warm the space naturally while maximizing daylight exposure.

Sustainable Features

The design incorporates a pre-fabricated cover that holds solar panels and includes a rainwater collection system. Such features emphasize a commitment to sustainability and efficient resource management. All walls connect securely to the foundation, which not only ensures stability but also contributes to the overall durability of the building.

The design ultimately reflects a practical approach to living. Every feature is carefully selected to enhance the experience of the residents, creating an environment that supports both functionality and a connection to the surrounding landscape.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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