3D - Laser Scanning vs Photogrammetry

The architecture industry is embracing digital robotic systems for the layout of buildings and interior fit-outs due to proven financial and time benefits – replacing the inaccurate tape measure, stringline and laser level approach. Many of our projects feature complex designs with curved walls and buildings with prefabricated materials and non-orthogonal spaces.

Traditionally, the layout of building services on site involved working based on the provided paper drawings. These drawings were used in combination with tape measure, levels and grids to identify location points for elements. This is all changing now. We seek to improve efficiency, ensure accuracy and provide quality data control to move forward with projects faster than traditional methods.

Laser scanning (High-Definition Surveying) is a strategy for capturing reality with high-accuracy mapping. We use laser beams to rapidly capture complete detail of the entire building construction project. Capturing 360 photography is important for visualizing projects and detail. Laser scanning and 3D Imaging are similar except there is an accurate position for every pixel. Capturing a project with an accurate position of the building project is called a Point Cloud. Point Clouds act as a 3D repository embedding information where it is intended to be used. Point Clouds were initially used maintaining industrial plants, but is now becoming a main-stream source for the best way to document any construction project throughout its life-cycle. Point Clouds are the segway to Building Information Modeling (BIM) which will be the bridge to robotic and automatic construction processes.

When to use laser scanning and photogrammetry

  • Renovations: most as-builts are inaccurate and incomplete. We can capture reality files to highest degree of accuracy that can be overlaid on existing, working or finished plan.

  • Additions

  • Expansions: Laser scanning is used to aid in creating anything from massing studies to site renderings. Site plans (applied to global coordinates), Floor Plans, Sections and Elevations can effectively be drawn on top of laser data.

  • Restorations

  • Historical Preservation

  • Mechanical, Electrical, Plumbing, Structural Steel

  • Construction Phases

  • Infrared/Thermal Inspections

  • Pre-construction coordination

  • Pre-drywall

  • Pre-ceiling

  • Pre-slab – quickly assess flatness of concrete floors to calculate the extents of any areas that need to be adjusted and accurately. Coloring the point clouds based on elevation determines volume metrics or high and low areas in the pour. This data can be uploaded to a total station to be staked out in the field.

  • As-built QA

  • As-designed model and drawing comparison

  • Archived records – milestones to manage and maintain building

  • Pre-Fab Components – HVAC, structural steel, floors, and rebar in the concrete slabs with actual installation time record. This information is used to verify components are installed in the correct place.

  • Design revisions – problem identification to avoid future conflicts

  • Construction logistics – Point Cloud can also be used to create paths with the correct clearances to remove equipment from the site once construction is complete

Compare newly constructed work against the as-designed model or drawings. Re-work accounts for 12 to 15% off the cost of construction. With laser scanning, the ability to catch conflicts before they happen can reduce rework to 1% to 3% keeping the project on schedule. We help GCs white-label and transfer data to owners.


Construction Gear of The Future

New Construction Technology | RJP Consulting Group

Within the last decade and a half, technology has grown exponentially and nearly every industry has been impacted as a result. The construction sector is no exception to this technological growth. Just to name a few industry developments: the ease of networking, project management software, the use of tablets in the field, 3D CAD and many other improvements. Construction technology continues to grow and there are several great products that have recently been brought to market. 

Drone Surveying
Small unmanned aerial vehicles (UAVs), commonly called drones, have become tremendously popular in the past few years. These drones are used for recreational purposes, commercial delivery and in the military. Now, drones are being looked at for their potential in the construction industry as a surveying tool.  Many drones are extremely self intuitive to use, have advanced self balancing technology, and can be equipped with high resolution video cameras. These attributes all lend to the perfect surveying tool that can take clear, quality video of a site from a bird’s eye view. Some drones can even be controlled with tablets, giving a real time picture of what the drone is seeing high above the framing, trucks or scrap on your project. This removes the need for surveyors spending the entire day moving their equipment around trying to get clear sight lines. Companies are already taking advantage of this incredible technology, with more surveyors sure to jump on board soon. 

Smarter Clothing & Gear
Construction sites can be dangerous; according the US Department of Labor, 899 people involved in construction were killed in 2014. Fortunately, new gear is being brought to market all the time which provides safe, smart technologies. One of these is the Halo Light which provides 360˚ of illumination on one's hard hat, visible up to a quarter mile. Check out this video of this cool light. Another hard hat innovation is the DAQRI Smart Helmet which allows wearers to have instant access to augmented work instructions right in front of their eyes on the visor equipped on their helmet. The helmet also allows video capture and thermal imaging. There are additional wearable technologies being introduced including a smart safety vests that alert workers when they are near hazards on the site (e.g. ledge without railings) as well as numerous other gear.

Exoskeleton Technology
Esk Works, an exoskeleton bionics company has developed a platform suited for the construction sector. The technology uses lightweight yet super strong materials and allow individuals to handle long duration, hard physical activities with minimal fatigue. From the companies' website: "With Ekso Works’ innovative exoskeleton technology, your workers can now complete heavy hand tool tasks with less fatigue, better workmanship and fewer workplace injuries." This system can be easily attached to any aerial works platform and connects to heavier power tools, allowing the worker to finish his job without overexertion or strain. As bionic technology gains more traction and prices come down, we can expect to see more systems similar to this all across work sites. 

Technology is constantly progressing and it is exciting to see what products will come to the construction industry next! To find out how RJP incorporates technology into their project management from inception to completion, give us a call today. (610)518-2930



Happy Campers


RJP Builds New Camp Store as Service Project

A camp in Honeybrook, PA received a new camp store and snack bar courtesy of RJP. Camp at the Old Mill is a Christian camp that brings inner city kids to for both day trips and overnight stays. Kids come from Washington, DC, Philadelphia, New York City, and Coatesville. For many of these kids, it will be the first time they have been outside of their home cities. Program director Josh Crans explained, “Volunteers actually pay to come serve at the camp. This is a mission trip for them. People think you need to go abroad to serve, but Coatesville is full of broken homes, families living far below the poverty line, and many other issues, and this is just 15 minutes away from Downingtown.” Kids are able enjoy arts and crafts, sports, fishing, canoeing, swimming, and archery among other activities while being taught the Gospel. 

RJP teamed up with local construction companies and contractors to complete the project. We wanted to serve our local community and Camp at Old Mill gave us the opportunity with this project. The first floor is a snack bar, where kids can get a drink or something to eat free of charge. The second floor is planned on serving as a camp store with shirts, mugs, etc. and lounge area for counselors or campers to hang out. We were excited to see campers and counselors line up outside the snack bar on its opening day for a snack or cool drink in the hot summer afternoon. To learn more about Camp at Old Mill, you can visit their website www.campatoldmill.org