Category: – Technology

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Bahareque (alternatively spelled bareque, also known as quincha)

Casa de pau a pique, or a bahareque house in Brazil.

Bahareque is the Spanish name for what is known in English as wattle and daub, a method of building where wet loam is applied to an interwoven mesh of twigs, branches, bamboo, etc. Specifically, bahareque (also known as quincha) is a subset of the thrown loam technique, where the wet loam is applied by hand onto the organic skeleton. The loam of earth (a combination of clay, silt, and soil) and aggregate, usually straw. Bahareque describes a wide range of building techniques and types, and can be separated out into various local traditions across South America.

Traditional bahareque wall.

Originally combined with palm frond roofs, bahareque was often topped with tiled roofs after European colonization. It can be used in combination with other earthen architecture technologies, as seen in the image below.

Solar do Major Novaes, constructed with adobe on the lower floor and wattle and daub on the upper floor.

Bahareque is currently being explored as a low-cost housing typology. There are questions as to how well it can withstand seismic activity, but it is often proposed as a housing solution for earthquake stricken regions. Costa Rica, Ecuador, and Brazil have all introduced engineered bahareque (or cement bahareque) following devastating earthquakes.

In Ecuador, where the matrix and frame for bahareque architecture is made of guadua bamboo, one of the strongest bamboo subspecies, there is promising contemporary research proving that bahareque is superior to masonry architecture both for earthquake safety and from a sustainability standpoint.

Bahareque houses designed by ARUP and REDES, before the plaster is applied to the bamboo matrix.
Construction documents of bahareque houses designed by ARUP.

References:

[1] http://www.crockerltd.net/adobe_big_one.htm

[2] https://www.seismico.org/bahareque

[3] https://www.researchgate.net/publication/282701710_Engineered_bamboo_houses_for_low-income_communities_in_Latin_America

[4] https://www.researchgate.net/publication/311583390_Design_Guide_for_Engineered_Bahareque_Housing/download

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WASP: Gaia

WASP (World’s Advanced Savings Project) has pioneered an innovative approach to sustainable architecture with their 3D-printed house called Gaia. This eco-friendly structure represents a significant advancement in sustainable construction and showcases the potential of using natural, locally-sourced materials in 3D printing technology.

Demonstration Video

First Layer Video

Materials and Composition

Gaia is built primarily using a mixture of:

  1. 25% local soil (30% clay, 40% silt, 30% sand)
  2. 40% chopped rice straw
  3. 25% rice husk
  4. 10% hydraulic lime

This composition utilizes natural waste materials from rice production, making it an environmentally conscious choice.

Construction Process

The house was 3D printed using the Crane WASP, a specialized 3D printer designed for on-site construction. The printing process took approximately 100 hours to complete 30 square meters of wall with a thickness of 40 cm.

Design and Performance

Gaia incorporates:

  1. Natural ventilation systems
  2. Thermo-acoustic insulation
  3. Bioclimatic efficiency

The structure maintains a comfortable temperature year-round without the need for heating or air conditioning systems, showcasing its energy efficiency.

Environmental Impact and Cost

Gaia demonstrates remarkable sustainability:

  1. Near-zero environmental impact
  2. Total material cost for the walls: €900
  3. Biodegradable construction materials
  4. Minimal carbon footprint

Significance and Future Implications

WASP’s Gaia project represents a significant step towards addressing global housing needs sustainably. By utilizing local materials and advanced 3D printing technology, this approach offers:

  1. A potential solution for rapid, low-cost housing construction
  2. Reduced environmental impact compared to traditional building methods
  3. Adaptability to various geographical locations and climates

The success of Gaia has led to further developments, such as the TECLA project, which aims to create even more sustainable and scalable housing solutions.

WASP’s Gaia project demonstrates the viability of combining an ancient building practice and material (earth) with modern 3D printing technology, and might demonstrate one way to create sustainable, efficient, and cost-effective housing.

Sources

  1. https://www.designnuance.com/the-first-3d-printed-house-gaia-built-with-earth/
  2. https://www.3dwasp.com/en/3d-printed-house-gaia/
  3. https://www.archpaper.com/2019/04/gaia-house-facadesplus/
  4. https://3dprintingindustry.com/news/wasp-showcases-3d-printed-bio-building-at-we-are-nature-event-176687/
  5. https://www.3dnatives.com/en/wasp-moves-towards-sustainable-construction-by-3d-printing-soil/
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TECLA House

TECLA House, designed by MCA and engineered by WASP.

The TECLA House is a collaboration between Mario Cucinella Architects (MCA) and World’s Advanced Saving Project (WASP). The name “TECLA” is a portmanteau of “technology” and “clay,” and references Italo Calvino’s Invisible Cities, specifically the fictional city of Thekla, were construction never ceases.

Massimo Moretti, WASP founder.
Mario Cucinella, MCA founder.

 

The materials used in the TECLA House include local clay and soil, water, rice husks, and a binder (which constitutes less than 5% of the total mixture). This makes it a true “0km building,” meaning the materials are sourced directly from the site on which the dwelling is built. WASP, an Italian 3D printing firm, brought their technological expertise to the project. Founded in 2012 by Massimo Moretti, WASP unveiled Crane WASP, their flagship 3D printer, in 2018. Mario Cucinella, the principal architect on this project, designed a morphology inspired by the potter wasp and based on the research of the School of Sustainability (SOS), Cucinella’s post-graduate school.

Sketch for the TECLA House by Mario Cucinella.

 

Interior view of the TECLA House.

TECLA was built with 350 layers of 3D printed earth. The configuration of the walls was dictated by the humidity and temperature of the climate, and SOS made several infill case studies optimized for different geographical locations.

Detail of the TECLA printing process.
Diagram of the infill configuration of TECLA.

 

Crane WASP imagined as a modular system of infinite extent.

The TECLA House is the first dwelling built using multiple 3D printers working simultaneously and collaboratively. This project was the proof of concept for the Crane WASP. WASP claims that Crane WASP is an infinite 3D printer, whose print area of 50 square meters can be extended in a modular fashion to cover a printing area of arbitrary size.

The two Italian firms built their prototypical TECLA house in Massa Lombarda, Italy, but the idea is that the house can be reproduced anywhere. WASP advertises their “Maker Economy Starter Kit,” which can be purchased online and fits inside a single shipping container. TECLA can be reproduced in “200 hours of printing, […] 150 km of extrusion, 60 cubic meters of natural materials for an average consumption of less than 6 kW.” Interested parties can also purchase an entire Crane WASP rig for €160,000.

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Gramazio and Kohler: Remote Material Deposition

Gramazio and Kohler is a research group based in ETH Zurich, Switzerland, who consider the “interlinking of data and material and the resulting implications for architectural design” [gramaziokohler.arch.ethz.ch]. Working between material, manufacturing logic, and the design process, the group uses technology, robots, and programming as a means to define a new architectural expression.

Remote Material Deposition Sitterwerk Timelapse

Interrogating methods and workspace limitations of the construction/build process, Remote Material Deposition literally builds from afar; “remote material”, as in material situated at a distance, and “deposition” as the ejection, depositing, and/or build up of a material.

Ballistic trajectories of light projectiles through bulb exposure

A robotic catapulting device, which is hooked up to a camera sensor installed at a birds-eye view, is installed within in a confined workspace. The catapulting device is loaded with loam projectiles, a composite soil made of clay, sand, and silt. The material in this process must be able to adhere to its fellow material upon impact, and harden after. For this reason loam (mud, earth) was chosen as the primary building material. The loam is shaped in cylinders, as to maximize the colliding forces of impact in order to adhere to the existing materials that were “shot” before it. Below is a diagram of the workspace.

Since uncertainties are bound to occur with the depositing, or lack of depositing, of the loam projectiles the over head sensor captures the mistakes, uncertainty, and data from the build, sends that information back to the design system (computer), and adjusts for the next round of projectiles. Although a defined proposal for design is used to set up and initialize the machine, the construction and build process becomes the design process; the two are linked in a feedback loop.

Design + Feedback loop

The use of earth/loam in this context is necessary for the method of construction applied, the adherence of projectiles, however the material and concept of this application can exist independently. What would the process of “ballistic architecture” look like at a much larger scale, if material were not a condition?

Consider the word “ballistics”: missiles, bombs, destruction. Countries such as Palestine and Afghanistan  (and so many more) have had entire historical and cultural identities destroyed through ballistic warfare and destruction of their architecture and built infrastructure. It is an incredible thought to place Gramazio and Kohler’s work in the context of ballistic creation. Instead of destroying each other through missiles and projectiles, can countries and nations build each other instead?

Size: 12 m × 12 m and a ceiling height of 7 m (interior construction space)

Year: 2014

Photos: ETH Zurich, Gramazio and Kohler, Michael Lyrenmann

Architects: Gramazio and Kohler

Students: unknown

References:

[1] https://gramaziokohler.arch.ethz.ch/web/e/lehre/277.html Gramazio Kohler website

[2] https://www.researchgate.net/publication/317340911_REMOTE_MATERIAL_DEPOSITION Conference Paper

[3] https://vimeo.com/100784860 Production video

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IAAC: Open Thesis Fabrication

image of 3d printing robot making curvy cellular forms out of clay
Image Source: OTF Booklet

Open Thesis Fabrication is a six-month applied research program for postgraduates at the Institute for advanced architecture of Catalonia.

The program focus is on combining additive manufacturing with construction technology to create sustainable architecture with key areas of research in robotic manufacturing, material research, and performance-based design.

The program works with non-governmental organizations to develop designs for use in African humanitarian contexts and is comprised of architects, engineers, designers, and professionals with previous knowledge of digital fabrication and computational design.

It’s learning objectives are for program participants to:

  • Gain experience in large-scale 3D printing
  • Develop skills in digital fabrication, computational design, and material research
  • Learn to provide architectural solutions considering various aspects of construction

This is achieved through the implementation of three phases, Exploration, Prototype Design Charettes, and Prototype Construction.

chart that displays the phases of implementation and timeline
Image Source: OTF Booklet

Examples of projects that have been completed include:

  • Digital Adobe – A 2-meter wide and 5-meter-high printed clay wall [2017-2018]
  • Terraperforma – A façade design of parametrically constructed modules optimized for solar radiation, wind behavior, and structural 3D printing [2016-2017]
  • Digital Urban Orchard – A wooden pavilion made with digital and robotic fabrication divided into a wooden structure, aquaponic system, and silicon skin designed to capture the ideal solar radiation for winter and summer.
  • Minibuilders – a family of small-scale construction robots that are capable of constructing objects larger than itself in order to address the limitation found in additive manufacturing that often constrains the proportions of fabricated objects to the size of the machine.
Image Source: OTF Booklet
Image Source: OTF Booklet
Image Source: OTF Booklet

 

Image Source: OTF Booklet
schematic and images of mini robots being used to produce clay structures larger than the size of the machine
Image Source: OTF Booklet

For more information regarding tuition fees, how to apply, grading systems, etc., be sure to check out IAAC OTF resource guide: https://iaac.net/wp-content/uploads/2019/07/OTF_Booklet_2019-22-07-2.pdf

 

 

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Stone Spray Project

Stone Spray Project from Stone Spray on Vimeo.

The Stone Spray Project is a revolutionary robotic construction method which uses soil as the base material and a liquid binder to solidify the soil granules. And uses a jet spray system to deposit the mix of soil and binder, for constructing architectural shapes.

Stone Spray is a project by architects Petr Novikov, Inder Shergill and Anna Kulik. The project is done in the Institute for Advanced Architecture of Catalonia and supervised by Marta Male-Alemany, Jordi Portell and Miquel Lloveras. With professional advisors: Santigo Martin from Vortica and Guillem Camprodon from Fab Lab Bcn.

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Computer Modeling to Build Better Mud Bricks

Rammed earth and stabilized mud block or brick are cheap, easy to make, usually durable materials widely used for building homes and low-level structures, especially in developing countries. Despite their widespread use and long history, the structural properties of these materials are not well understood, so how they could be manufactured to better withstand destructive natural forces, such as earthquakes and weathering, remains a goal. Craig Foster, assistant professor of civil and materials engineering at the University of Illinois at Chicago, hopes a specially tailored set of computer models he is developing may provide the necessary answers. He has just won a three-year, $243,000 National Science Foundation grant to conduct the work.

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Bio-Engineered Sand Brick

The winner of the 2010 Metropolis Next Generation Design Competition proposes a radical alternative to the common brick: don’t bake the brick; grow it. In a lab at the American University of Sharjah, in the United Arab Emirates, Ginger Krieg Dosier, an assistant architecture professor, sprouts building blocks from sand, common bacteria, calcium chloride, and urea (yes, the stuff in your pee). The process, known as microbial-induced calcite precipitation, or MICP, uses the microbes on sand to bind the grains together like glue with a chain of chemical reactions. The resulting mass resembles sandstone but, depending on how it’s made, can reproduce the strength of fired-clay brick or even marble. If Dosier’s biomanufactured masonry replaced each new brick on the planet, it would reduce carbon-dioxide emissions by at least 800 million tons a year. “We’re running out of all of our energy sources,” she said in March in a phone interview from the United Arab Emirates. “Four hundred trees are burned to make 25,000 bricks. It’s a consumption issue, and honestly, it’s starting to scare me.” Read more…