3D Printing in the Construction of Houses: How it is Applied
The typical process of building a house might take several weeks or months and is fraught with problems like overspending, understaffing, and delays. Companies seeking innovation or individuals in critical need of housing are no longer satisfied with this sluggish and costly approach. Here we come to 3D printing. This blog post delves into the current state of building 3D printing and how it enables the construction of full-sized homes in as little as two days. Faster, cheaper, and smarter housing is the future, and this revolutionary idea is making it a reality.
How 3D Printing Is Transforming the Way We Build Homes?
Because it allows for more efficient, quicker, and cheaper ways to build houses, 3D printing is transforming the construction business. 3D printers use a carefully mixed composite or concrete material that is extruded layer by layer to create a house's walls, as opposed to the conventional methods that depend on wood, steel, or bricks. An electronic blueprint serves as a guide for this procedure, guaranteeing accuracy while decreasing room for human mistake. This allows for the rapid printing of whole home designs in a few days or even hours, drastically reducing building times and labour expenses.
3D printing encourages sustainability and design flexibility in addition to speed and cost advantages. Without increasing the use of materials or expenditures, architects can produce intricate curves, forms, and bespoke designs. In addition to reducing raw material use and building waste, 3D printing frequently produces more energy-efficient buildings. The rapid, inexpensive, and long-lasting construction of 3D-printed houses provides a scalable response to housing crises and natural calamities.
Printing a House in 2 Days: Real-World Examples
1. Gutech 3D Prints Several Structures in Less Than Eight Days in Oman
Read full story: meconstructionnews.
The German University of Technology (GUtech) collaborated with COBOD in Duqm, Oman, to construct three individual buildings in a just eight days. Among these were a fisherman's house, a public lavatory and a coffee shop. Including setup and curing, the fisherman's house took about 19 hours to print. The total time required was just over two days. The buildings were remarkably affordable, covering a total of 173 m² with concrete that cost only $3,600. A locally sourced concrete mix was utilised for the project, which helped to minimise environmental effect and logistical challenges. No longer are conventional formwork and scaffolding required due to the print process. Even in the face of extreme desert circumstances, the GUtech crew was able to assemble the printer and set it up.
2. India: L&T’s Two-Storey Printed Building in 106 Hours
Read full story: gcoportal.
The largest construction company in India, Larsen & Toubro (L&T), completed the nation's first two-story 3D-printed structure in a mere 106 hours. They have a 65 square metre building at their location in Kanchipuram, close to Chennai. Printed utilising a COBOD technique, the structure utilised an in-house-developed concrete mix.
L&T made sure the structure complied with local building requirements by adding vertical reinforcement bars and welded mesh during the procedure. This project demonstrated the potential of 3D printing to construct bigger, multi-story buildings. This was a watershed moment in Indian construction technology, demonstrating that additive manufacturing can expedite the building process while still meeting regulatory requirements.
3. Australia: Luyten 3D’s ‘Heptapod’ Created in Just Three Days
Read full story: luyten3d.
Luyten 3D and the University of New South Wales collaborated to build the "Heptapod," a two-story concrete home in Melbourne. After just two days of 3D printing, the primary structural shell was ready for final assembly. The walls were able to acquire strength in as little as five hours thanks to Luyten's Platypus gantry printer and a carefully blended concrete mixture.
Compared to more conventional building techniques, this one could have used as much as 80% less labour. Being the first 3D printed house in the Southern Hemisphere to comply with the National Construction Code, it was also the first of its kind. Not only did the Heptapod project demonstrate the practicality of using 3D printing technology to build houses, but it also demonstrated how fast and efficient it can be. Subsequently, Luyten began investigating comparable approaches for future space habitats and homes in rural areas.
4. Belgium: Kamp C’s Two-Storey Prototype with COBOD
Read full story: Cobod.
The Kamp C innovation centre in Flanders, Belgium, utilised a COBOD 3D printer to construct a 90 square meter, two-story house. The building was 3D printed utilising a fiber-reinforced concrete mixture and a fixed gantry system right there in the building site. It took three weeks to finish the first prototype, but engineers think they can make a new one in two days. The printed walls cut down on material consumption by over 60% and outperformed traditional block walls in terms of thermal performance.
The build demonstrated the labor-saving advantages of additive building by not requiring formwork or scaffolding. The idea by Kamp C was groundbreaking for Europe and garnered a lot of interest from experts in the field. This model house was an important step towards proving that 3D-printed multi-story buildings are practical, environmentally friendly, and may even be more efficient than the conventional way of building.
5. USA: ICON and Habitat for Humanity’s Fast Builds
Read full story: Businessinsider.
Using its Vulcan 3D printer, ICON built a 400 square foot house in about 24 hours in the US. One more example: in under 28 hours, Habitat for Humanity and COBOD collaborated to construct a 1,200 square foot house in Virginia. The speed and cost savings were similar in a second Arizona home that was 1,738 square feet in size. The projects achieved a cost savings of approximately 15% per square foot when it came to building walls.
The time and resource savings achieved by 3D printing were on full display in these creations. Another Texas community that was made possible by ICON's efforts is Wolf Ranch, which consists of one hundred 3D-printed homes. Building these homes is a breeze, and they last a long time while still fitting in with the regulations in your area. These initiatives demonstrate that 3D printing in the building trades is becoming mainstream.
6. Angola: Power2Build Prints a 140 m² House in 30 Hours
Read full story: greenbuildingafrica.
Angolan construction company Power2Build managed to print a 140 square metre home in under thirty hours. By utilising a COBOD printer, the team managed to "frame in" the house in a little over 24 hours, significantly shortening the typical duration of construction. The primary construction was printed at an impressive pace, even though the inside work, including wiring and plumbing, was finished later. This project showcased the possibilities of 3D printing in areas experiencing fast development and with inadequate construction infrastructure.
Power2Build was able to drastically cut down on material waste and the number of trained labourers needed by utilising 3D printing technology. Based on the results of this experiment, it seems that 3D printed homes could be a quick and long-term answer to the problem of undersupply of homes in poor countries like Africa.
7. Ireland: Dundalk’s First Three-Bedroom 3D Homes
Read full story: rte.
A pilot initiative in Ireland's County Louth saw the construction of three-bedroom, two-story 3D-printed houses. A number of local partners, including Harcourt Technologies and the Louth County Council, worked together to construct the houses. Each house achieved an A2 energy rating and covered an area of around 110 square meters. Total on-site time was 18 days, with the wall structures printed in a mere 12 days. This construction made use of cutting-edge concrete cavity wall technology and COBOD's gantry printer.
The project showed considerable time savings and waste reduction, while the ultimate cost per house was €253,000, which is comparable to traditional construction. Automated printing and the elimination of concrete blocks allowed for a 60% reduction in homeowner completion time. A further rollout across Ireland is currently being discussed based on this trial. In response to the rising need for energy-efficient and reasonably priced housing, it provides a workable and long-term answer.
8. Mexico: Nacajuca Village by New Story and ICON
Read full story: Iconbuild.
Collaborating with ICON, the non-profit organisation New Story constructed the first 3D-printed hamlet in Nacajuca, Mexico. Built in a single day using ICON's Vulcan II printer, each home has an approximate floor plan of 650 square feet. Designed specifically for families facing severe poverty and precarious housing situations, these homes offer a safe haven. Printing was a breeze and needed very little human intervention. We hired locals to do the electrical work, plumbing, and roofing.
A tiny porch and curved walls made each house seismically resistant. They were incredibly inexpensive, with materials kept to roughly $4,000 per house. The project's success proved that 3D printing has many potential applications, including those in the fields of innovation and humanitarian aid. In the time after, the Nacajuca community gained international attention as a model for how to address developing-world housing shortages through technological means.
Having looked at the best 3D printed houses, it's also important to have a look at the best 3D modeling software that you can use to create your 3D models. There are many that are available, but we recommend using SelfCAD. It is easy to use and powerful at the same time. Anyone, regardless of their experience, can get started with ease. The video below shows the overview of the software.
SelfCAD also comes with an in-built online slicer that you can use to slice your designs and generate the G-code to send to your 3D printer. It also comes with many interactive tutorials that you can use to learn how the software.