26. Case Studies of Successful Human-Robot Collaboration in Construction

The construction industry is undergoing a transformative shift through the integration of robotics and automation. As projects grow in complexity, scale, and safety requirements, human-robot collaboration (HRC) is emerging as a critical solution to enhance productivity, reduce accidents, and improve project outcomes. Rather than replacing human workers, modern construction robotics are being designed to work with humans—combining human adaptability and judgment with robotic precision and endurance.

In the construction industry, there is a growing trend towards using robots to assist human workers rather than replace them. This integration helps in several ways. First, it enhances productivity by allowing workers to focus on more complex tasks while robots take care of repetitive or physically demanding tasks. Second, it reduces the risk of accidents as robots can operate in hazardous environments, keeping human workers safe. Essentially, robots bring their precision and endurance to the table and work in tandem with the flexibility and decision-making capabilities of humans.

Think of a basketball team where human players represent human workers and robots are like assistant coaches. The assistant coaches help with strategy and analysis, allowing players to concentrate more on executing plays and scoring points. This collaboration makes for a stronger team and better performance overall.

The Semi-Automated Mason (SAM100) is a collaborative robotic system developed by Construction Robotics to assist with bricklaying. It does not fully automate the process but works alongside human masons.

Nature of Collaboration

• Humans handle setup, alignment, detail work, and quality assurance.
• Robot performs repetitive and high-effort tasks like picking bricks, applying mortar, and placing them with precision.

Project Example

• Used in multiple projects across the US, including the Berkeley Building, New York.
• Achieved 3–5 times faster bricklaying speed.

Outcomes

• Reduced physical strain on masons.
• Enhanced consistency in brick placement.
• Optimized use of skilled labor for critical detailing.

The SAM100 is a robot specifically designed to assist in the bricklaying process. Instead of doing all the work alone, it works side by side with human masons. The masons are responsible for setting up the work area and ensuring everything is aligned correctly, while the SAM100 robot takes care of the physically demanding tasks, like lifting and placing bricks. This partnership leads to significant efficiency gains, making the bricklaying process 3 to 5 times faster than traditional methods. Additionally, it helps to reduce the physical demands on the masons, allowing them to focus on the quality and detail of their work rather than the heavy lifting.

Imagine building a Lego house with a friend. You might be responsible for choosing the right pieces and fitting everything together, while your friend uses a special Lego machine to automatically place the blocks perfectly. This teamwork helps you build the house much quicker and with fewer mistakes.

Brokk, a Swedish manufacturer, creates demolition robots widely used in tight, hazardous environments like tunnels, nuclear plants, and old buildings.

Human-Robot Dynamics

• Operators control the robot remotely from a safe distance.
• Robot performs demolition with hydraulic hammers, shears, and crushers.

Use Case: UK Underground Station Renovation

• Robots used for controlled demolition in London’s aging underground systems.

Benefits

• Improved worker safety in hazardous demolition zones.
• Precision demolition near sensitive structures.
• Continuous operation in confined spaces where humans cannot work effectively.

Brokk robots are designed for demolition work, especially in places that are dangerous or hard for humans to access, such as tunnels. Operators can control these robots from a safe location, reducing the risk of injury during demolition. The robots use powerful tools to break down structures while allowing for precision work, ensuring that sensitive areas nearby are not damaged. This capability means that work can proceed in confined spaces without risking the safety of human workers.

Imagine using a long-reach robot arm to knock down a wall while you stand safely in another room, away from all the dust and debris. You can control the robot to ensure that it hits the right spots without causing danger to yourself or anyone nearby.

TyBOT is an autonomous robot designed to tie rebar intersections, which is a repetitive, labor-intensive job in bridge and highway construction.

Collaboration Model

• Human teams place rebar mats manually.
• TyBOT moves along the mats and autonomously identifies and ties rebar intersections.

Case: Florida Bridge Construction

• Reduced labor requirements by over 50%.
• Improved job site ergonomics.

Key Outcome

• Freed human workers from repetitive strain tasks.
• Ensured speed and uniformity in tying.

The TyBOT robot specializes in a very specific task: tying together steel bars (rebar) that are used for reinforcing concrete in construction. In traditional construction sites, this can be a tedious and physically demanding job. The TyBOT simplifies this by autonomously finding where the bars intersect and tying them precisely. As a result, it reduces the number of workers required for this task by more than half and prevents human workers from suffering from repetitive strain injuries. Additionally, the robot helps to maintain a consistent quality in the tying process.

Think about trying to tie a lot of shoelaces on a row of shoes. If you had a special robot that could tie each shoelace perfectly while you just position the shoes, you’d save time and ensure every shoelace looks neat and tidy, without making your fingers sore.

Concremote is a sensor + AI system that works in tandem with screeding robots to determine the ideal time for concrete finishing based on curing data.

Human-Robot Interaction

• Humans install sensors and monitor data.
• Screeding robots work autonomously based on sensor feedback.

Project Highlight

• Used in German infrastructure projects for precision in large slab placements.

Advantages

• Avoids premature or delayed finishing.
• Reduces wastage and rework.
• Enhances final surface quality.

The Doka Concremote system combines advanced sensors and artificial intelligence to optimize when concrete should be finished. Humans play a vital role by setting up these sensors and keeping an eye on the data they provide. The screeding robots then use this real-time data to determine the best time to smooth out the surface of the concrete, avoiding the mistakes that can happen if finishing occurs too early or too late. This process leads to less wasted material and less reworking, resulting in higher quality surfaces.

Imagine baking a cake. If you know the exact temperature and timing to take it out based on a special thermometer, you’ll get a perfect cake every time without the risk of it being undercooked or burnt. The same goes for the concrete finishing; using the right data at the right time leads to a better finished product.

Tunnel maintenance is crucial for structural safety but poses risks to workers.

Robotic System

A mobile robot equipped with sensors, cameras, and AI for detecting cracks, misalignments, and corrosion.

Human Involvement

• Human operators define scanning paths and interpret AI-generated defect reports.

Use Case: Railway Tunnels in Italy and Spain

• Reduced inspection time by 60%.
• Increased detection accuracy.

Safety Impact

• Reduced exposure of workers to confined and dangerous tunnel environments.

Regular inspections of tunnels are crucial for safety, but they can be dangerous for human workers. The ROBINSPECT system employs a mobile robot that is equipped with various sensors and AI to find issues like cracks or corrosion in tunnel structures. While the robot does the scanning work autonomously, human operators map out where it needs to look and analyze the findings from the AI. This system has proven to enhance the speed and precision of inspections while keeping human workers safe from dangerous conditions.

Think of a robot vacuum cleaner in your house; while it works on its own to clean the floors, you still set it up and check its progress on your phone. In the same way, the ROBINSPECT robot does the tough work of checking the tunnels while you safely monitor its findings without putting yourself at risk.

ApisCor uses mobile 3D printers for on-site house construction using cementitious material.

Human-Robot Workflow

• Humans design the digital model, manage material supply, and perform electrical/plumbing work.
• Robot autonomously prints structural walls layer by layer.

Highlight: Dubai Municipality Office

• World's largest 3D-printed building using one robotic arm.

Impact

• Cost-effective, sustainable housing.
• Minimal waste and labor cost.
• Faster project turnaround.

ApisCor has revolutionized the construction process with mobile 3D printing technology. Workers first create a digital design for the building, and then the robot takes over, printing the structure's walls in layers using concrete-like materials. This method leads to significant savings in both time and resources. For instance, the remarkable achievement of creating the world's largest 3D-printed building shows how effective this technology can be, resulting in less waste and quicker construction times.

It’s like using a 3D printer to make a model at home. But instead of making a small toy, this 3D printer builds actual walls of a house! Just like you design the toy on a computer and then hit print, builders can create homes with less fuss and less waste.

Exoskeletons are wearable robotic suits that support the human musculoskeletal system, reducing fatigue and injury during heavy lifting.

Use Case: Skanska Construction Sites (UK)

• Used by workers performing repetitive overhead tasks.

Human-Robot Symbiosis

• Robot suit assists movement without replacing human control.

Benefits

• Increased work duration without strain.
• Fewer musculoskeletal disorders.
• Improved productivity.

Exoskeletons are like robotic suits that help construction workers lift heavy objects. These suits are designed to alleviate stress on the muscles and joints, which is especially helpful for repetitive or overhead tasks. While the robots do offer support, they do not take control away from the workers; instead, they augment human capabilities. As a result, employees can work longer and with less pain, leading to fewer injuries overall and increased output.

Imagine wearing a pair of high-tech gloves that help you lift a heavy box. The gloves give you extra strength, so your arms don’t get tired as quickly. That’s how exoskeletons assist construction workers, enabling them to perform their tasks without suffering from exhaustion or injuries.

Factory_OS combines modular construction with robotic systems in a factory setting to build housing units rapidly.

HRC Integration

• Robots handle module framing and material handling.
• Humans perform electrical, plumbing, and finish work.

Output

• Entire apartment units completed in weeks instead of months.
• Better quality control due to factory setting.

Example Project: Bay Area Affordable Housing Initiative

• Created hundreds of units at reduced cost and time.

Factory_OS utilizes robots to manufacture components for modular homes inside a factory environment. This method allows for faster assembly of apartments because it leverages automation for repetitive tasks like framing. Human workers complement this system by taking care of the more intricate jobs involving electrical and plumbing work. As a result, builders can produce entire housing units much more quickly and consistently than traditional construction methods, addressing urgent housing needs.

Think about assembling furniture from a flat-pack kit in a factory where specialized machines do the heavy lifting, while you just connect pieces together. The robots do the bulk work quickly, allowing you to focus on making everything fit nicely, which is what happens in modular construction.

Spot, a quadruped robot, is used in surveying and inspection tasks, equipped with Trimble laser scanners and GPS systems.

Human-Robot Integration

• Surveyors plan paths and define data needs.
• Spot navigates terrain and collects accurate 3D scans.

Case: Large-Scale Construction Sites

• Sites in Singapore and Japan using Spot for daily progress monitoring.

Results

• Reduced need for rework due to accurate and consistent progress data.
• Improved communication among stakeholders.

Spot is a robot designed to perform surveying and inspection work on construction sites. Human surveyors decide how and where Spot should go, and the robot uses advanced technology to create detailed 3D maps of the area. By providing accurate data on the construction's progress, Spot enables teams to identify problems early on, which reduces the amount of rework needed later and simplifies communications among team members.

Picture a little robot dog that roams around your garden, taking photos and recording details about your plants. While you plan its route, it effectively documents everything, allowing you to keep track of how your garden is doing without you having to walk around and inspect it all yourself.

Canvas Robotics developed a robot to assist in drywall finishing—an essential but tedious part of interior construction.

Collaboration

• Human workers prepare walls and materials.
• Robot applies compound, sands surfaces, and ensures evenness.

Deployment: Commercial Offices in California

• Completed jobs in half the usual time.
• Reduced physical wear on drywall workers.

Canvas Robotics has created a robot specifically for finishing drywall, which is often a time-consuming and repetitive job in construction. Humans set up the materials and prepare the walls, while the robot takes over the smoothing and sanding work. This division of labor has resulted in projects being completed much quicker, and workers experience less physical strain from doing the heavy lifting and labor-intensive tasks.

Imagine an advanced art robot that helps you create a mural. You outline the design, and the robot fills it in and smooths everything out perfectly. This allows you to focus on the creative side while the robot handles the meticulous detail work, speeding up the overall process.

Jaibot is a semi-autonomous drilling robot designed to perform overhead MEP (Mechanical, Electrical, and Plumbing) tasks, such as marking and drilling holes for installations on ceilings and slabs.

Human-Robot Collaboration

• Humans load design data (BIM) and supervise the robot’s positioning.
• Jaibot performs precise drilling based on the data input, guided by cloud-based planning.

Application Site: High-rise Commercial Project, Germany

• Jaibot executed thousands of drilling tasks across multiple floors.

Advantages

• Improved accuracy by eliminating manual layout errors.
• Enhanced safety by reducing ladder and scaffolding work.
• Reduced fatigue for human workers.

The Jaibot is a robotic assistant designed specifically for drilling tasks on construction sites, particularly in hard-to-reach spots like ceilings. A human inputs the design data into the robot, which uses this information to drill with precision. This capability ensures accuracy that might be missed in manual drilling and keeps workers safer by reducing the need to work from ladders or scaffolding. Consequently, workers can focus on overseeing the process instead of doing the physically challenging drilling themselves.

It’s similar to using a high-tech gadget to accurately drill holes in a wall for hanging shelves. Instead of trying to measure and drill by hand while balancing on a high stool, you let the gadget do the work. It ensures every hole is correctly placed, making it much safer and easier for you.

Volvo Construction Equipment has developed autonomous and semi-autonomous asphalt pavers and rollers for road construction.

Collaboration Model

• Engineers program paving routes and supervise quality control.
• Machines pave roads using sensor fusion and GPS control with minimal human intervention.

Case: Smart Road Projects in Sweden and Norway

• Conducted trials in extreme weather and terrain conditions.

Key Benefits

• Enhanced uniformity in paving thickness and compaction.
• Reduced human fatigue in long-haul paving tasks.
• Significant gains in operational efficiency.

Volvo has introduced advanced machines for paving roads that can work with minimal human supervision. Engineers set the route and quality expectations, while the machines use GPS and sensors to ensure the paving is done accurately. This technology not only enhances the consistency of the road surface but also significantly reduces fatigue for workers who would otherwise have to do physically demanding tasks, thereby boosting overall efficiency in road construction.

It’s like having a smart lawnmower that knows where to go on your lawn without you pushing it. You program it to cover the area, and it does the work of cutting the grass evenly, allowing you to relax while it takes care of the hard work, leading to a well-manicured lawn.

KUKA robotic arms were deployed in Skanska’s prefabrication facilities for cutting, welding, and assembling steel components for modular structures.

Human-Robot Division

• Humans provide inputs, material logistics, and supervise error handling.
• KUKA robots carry out repetitive high-precision tasks.

Site Application: Modular Hospital Units During COVID-19

• Rapid construction of hospital modules with high precision.

Outcomes

• 40% reduction in fabrication errors.
• Improved speed-to-market for urgent infrastructure needs.
• Enhanced worker safety in factory environments.

In Skanska's prefabrication facilities, KUKA robots are used for tasks like cutting and assembling steel components. Humans oversee the operation, ensuring materials are available and troubleshooting any issues that arise, while the robots handle repetitive and precise work. This collaboration significantly improved the efficiency of constructing hospital modules during the COVID-19 pandemic, allowing for quicker responses to urgent needs.

Imagine a busy kitchen where chefs focus on preparing meals while a robot helps chop vegetables and mix ingredients. The chefs ensure everything is seasoned correctly and take care of the final touches, leading to faster meals served without sacrificing quality.

Okibo is an autonomous robot designed to paint walls and ceilings on construction sites.

Human-Robot Interaction

• Workers outline the painting area and upload the building's model.
• The robot handles spray painting and adjusts its movements based on surface contours using computer vision.

Pilot Project: Residential Towers in Tel Aviv

• Delivered consistent coating with reduced material wastage.

Value Addition

• Freed skilled painters for detail work.
• Reduced respiratory hazards.
• Faster coverage with minimal supervision.

The Okibo robot is specifically designed for painting, making it a valuable tool on construction sites. Workers prepare by defining the painting area, then the robot uses advanced technology to paint the surfaces. By taking over the bulk of this work, the Okibo allows skilled painters to focus on intricate details while also minimizing hazards like inhaling paint fumes, leading to faster and safer completion of painting tasks.

Picture a friend helping you paint a big wall. They’re great at applying the paint quickly and evenly, letting you tackle the smaller, detailed areas that need a bit more care. This way, you both get the job done faster and reduce the chances of making a mess.

BEAR is a climbing and crawling robot used to inspect the undersides of bridges, often unreachable by humans.

Collaboration Setup

• Operators control the robot remotely, interpret scan results, and manage data analysis.
• Robot captures real-time visual and sensor data of steel structures and concrete surfaces.

Deployment: US Federal Bridge Inspection Program

• Used on aged infrastructure in New York and Michigan.

Benefits

• Detected microcracks earlier than traditional inspection methods.
• Safer inspections without the need for hanging platforms or divers.
• Enabled predictive maintenance strategies.

BEAR is a specialized robot designed to survey sections of bridges that are difficult for humans to access. It allows operators to receive and analyze inspection data remotely, ensuring that any signs of wear or damage—like microcracks—are identified early. This proactive approach helps keep bridges safe and enables maintenance before critical issues arise, removing the dangers associated with human inspections in such hard-to-reach spaces.

Imagine a drone flying beneath an old bridge, taking pictures and looking for cracks that you can’t see from the ground. You’d get all the information you need while staying safe on solid ground, much like how BEAR inspections work to enhance safety and efficiency.

Canvas Robotics developed a robot to assist in drywall finishing—an essential but tedious part of interior construction.

Collaboration

• Human workers prepare walls and materials.
• Robot applies compound, sands surfaces, and ensures evenness.

Deployment: Commercial Offices in California

• Completed jobs in half the usual time.
• Reduced physical wear on drywall workers.

Canvas Robotics has created a robot specifically for finishing drywall, which is often a time-consuming and repetitive job in construction. Humans set up the materials and prepare the walls, while the robot takes over the smoothing and sanding work. This division of labor has resulted in projects being completed much quicker, and workers experience less physical strain from doing the heavy lifting and labor-intensive tasks.

Imagine an advanced art robot that helps you create a mural. You outline the design, and the robot fills it in and smooths everything out perfectly. This allows you to focus on the creative side while the robot handles the meticulous detail work, speeding up the overall process.

These case studies illustrate the wide-ranging benefits of collaborative robotics in areas like bricklaying, demolition, concrete finishing, inspection, and 3D printing, among others. Each example provides insights into the nature of collaboration between humans and robots, shedding light on the potential for future advancements in the construction industry.

The various case studies detailed in this chapter highlight how collaborative robotics are being successfully integrated into essential areas of construction. By showcasing real-world applications—from bricklaying to inspection—these examples demonstrate improved efficiency, safety, and quality in construction processes. They offer valuable insights into how humans and robots can work together, paving the way for more innovations and advancements in this industry as technology progresses.

Think of how smartphones have transformed everyday life—by integrating communication, navigation, and thousands of apps, they enhance daily tasks significantly. Similarly, the collaborative use of robots in construction will likely lead to a future where projects are completed more safely and effectively, ultimately changing the landscape of the industry.

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