SBIR-STTR Award

Additive Manufacturing in Construction
Award last edited on: 4/15/2021

Sponsored Program
SBIR
Awarding Agency
NSF
Total Award Amount
$1,549,999
Award Phase
2
Solicitation Topic Code
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Principal Investigator
Robert Platt Boyd IV

Company Information

Branch Technology LLC (AKA: Branch Technology Inc)

100 Cherokee Boulevard Suite 125
Chattanooga, TN 37405
   (423) 682-8800
   info@branch.technology
   www.branch.technology
Location: Single
Congr. District: 03
County: Hamilton

Phase I

Contract Number: 1520482
Start Date: 7/1/2015    Completed: 12/31/2015
Phase I year
2015
Phase I Amount
$150,000
The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project is in the availability of an additive manufacturing (3D printing) process suitable for full-scale building construction. The construction industry represents a critical nexus in the American economy. Building construction impacts nearly every economic sector, particularly manufacturing, transportation, energy, consumer products and appliances, and real estate. Simply, a building is perhaps the most essential economic stimulus there is. Yet, the practice of building has seen little of the technological revolution that has transformed virtually every other industry. As a result, the construction industry produces significant material and financial waste, and its productivity has steadily declined over the past several decades. Additive manufacturing is the most efficient and cost-effective approach to creating custom products, of which buildings are by far the most valuable and most widely purchased. Customization is increasingly driving demand by today?s consumers. Additive manufacturing in construction could reduce costs and material waste while providing unparalleled design freedom and driving innovation through the consolidation of many isolated industrial activities into one highly flexible and efficient manufacturing process, which directly serves industry professionals and clients at an individual level.

The intellectual merit of this project stems from the vast potential of Additive Manufacturing to transform design and making. In a broad sense, the proposed method of construction aims to make the complexity, efficiency, and freedom of digital architectural design accessible to the average consumer. Phase I research will serve to scale and develop a new large-scale additive manufacturing process, and to evaluate the performance of the physical products in their functions as building components. The proposed method may potentially impact other types of large-scale manufacturing as well, including aerospace and automotive. Our technology is rooted in observations of the processes in which forms are created in the natural world. Structures in nature have long fascinated scientists and engineers, due to their remarkable efficiency and complex forms. 3D printing now allows us to manufacture products of similar efficiency and complexity which reflect our observations of nature. We believe that if the genius of natural organisms can be applied to the way we create shelter, provide transportation, design infrastructure, or construct cities, the resulting innovations could profoundly, and very literally, shape the way our societies develop, and transform our relationship with the natural world.

Phase II

Contract Number: 1632267
Start Date: 9/15/2016    Completed: 8/31/2018
Phase II year
2016
(last award dollars: 2018)
Phase II Amount
$1,399,999

This Small Business Innovation Research Phase II project is in support of Branch Technology's novel Additive Manufacturing (AM) process that combines 3D printing technology and conventional construction materials to enable a new way to create buildings. The construction market in the US is approximately 8% of GDP. Any portion of the market that could be enhanced would have a large impact in the US economy. To that end, Branch is creating a process similar to building found in the natural world. In the formation of natural systems, material is the most expensive commodity; a structure is derived by the efficient use of material, but shape is free to be created in almost any form. Branch can approach this efficiency with additive manufacturing, where form is created and material is deposited only when needed and little waste is created. At the core of Branch's method of AM-based construction are three key developments: a three-dimensional freeform structure (the cellular matrix or lattice) which serves as a scaffold for other materials, a robotically- controlled extrusion mechanism by which the cellular matrix is produced, and the algorithms necessary to control the robot for successful production. The proof of concept for this process and more have already been demonstrated by Branch in Phase I of this grant.The technical objectives for Phase II focus on improving the procedures and technology already created. The focus areas for this phase are algorithm development, hardware improvements, the application of finishing materials, code compliance testing, and material science experiments. Algorithm development consists of refining and creating the software necessary to extrude the printed matrix and support a client base. Hardware improvements are necessary to improve the speed and efficiency of the process to create a commercially viable workflow. This research will necessitate the purchase of extra hardware for experimentation. American Society for Testing and Materials (ASTM) testing for load bearing capacity is necessary to enter the market and provide code compliant construction. Experimentation in the application of finished materials to the 3D printed lattice such as spray foam and concrete are vital to the realization of complete buildings.