Drone with thermal camera shows hot spots in massive fire in Oakland, Calif.

Thermal Drone Image

Oakland firefighters have been battling a massive fire overnight at a construction site where townhomes are being built. The fire was reported at 2 a.m. this morning. About 90 firefighters were on the scene as the massive fire ripped through the townhouse construction site located at West Grant and Filbert Street in Oakland, Calif. The Alameda County sheriff’s deputies brought a DJI Inspire 1 in to get footage of the fire. The drone equipped with a thermal camera shows exactly where the hotspots are.

Drone with thermal camera deployed

According to Department chief Nick Luby, the fire went up so quickly because of the construction supplies.

“So basically it was just a big pile of kindling- 2×4’s and small timber and a lot of air in there and it can circulate and get the timber going real quick and then it grows quickly,” he said.

Power company PG&E shut down the power for about 2,200 customers as firefighters were battling the fire. Near Myrtle Street, about 30 homes were evacuated out of fear of the fire spreading.

A second fire starts in Oakland

Only a few blocks away at 3266 Peralta Street, another fire broke out at a residential construction site later this morning. According to the firefighters, it was a small fire that was already out by the time they arrived. However, they did see some suspicious looking evidence and called for investigators. In recent years more residential construction sites in Oakland have been going up in flames. Today’s two fires mark number six and seven and both are currently under investigation.

“In addition, we had a report of attempted arson at 3266 Peralta and so with that – we are on heightened alert and awareness to try to ensure that we do our due diligence to understand what happened here and whether or not the two incidents are related,” said Oakland Fire Chief Darin White according to ABC7News.

To assist the firefighters, the Alameda County sheriff’s deputies brought a DJI Inspire 1 drone in to get footage of the fire. The drone equipped with a thermal camera shows exactly where the hotspots are.

Drone Thermal video

In the video below you can see what the drone pilot saw on his screen. The thermal camera has a number of different ways in which the information can be displayed. Depending on the circumstances, certain settings may help the operator get a better understanding of what is happening on the ground. You can see the operator flick through the various options at about nine minutes into the video. The DJI Inspire 1 was flown by the Alameda County Sheriff’s Office and released by Alameda County Fire.

Video credit: Flown by Alameda County Sheriff’s Office and released by Alameda County Fire.

Article pulled from Drone DJ.

Surveying with Drones is a Game Changer for Real Estate Developers

Less Buck, More Bang

No developer can justify spending tens of thousands of dollars to stake acreage for development, or to commission aerial photography by plane, until the project feasibility is fully assured. But for a fraction of the cost of traditional survey means, developers can use drone services to survey a large land parcel to determine if it will fit their needs, before investors are even on board.

By Aavaaz home builder

By Aavaaz home builder

The envisioning stage of a project has always been hindered by reliance on old surveys or the lack of sufficient detail from aerial and satellite imagery. How much time and money do you tie up in an idea, to get to the stage of knowing it will be profitable? Drones now supply superior detail and accuracy up-front to identify more opportunities, and reveal more pitfalls, within an area.

While it now costs much less to survey specific parcels that a developer is interested in, using drones allows developers to take a deeper look at more parcels up-front. If you look at more parcels, you will always make a better land purchase. A drone can survey a 100-acre property in three days for a few thousand dollars.

One or two parcels thus become five or 10 properties under consideration. Big IS better when it means finding that perfect site for development. Using high-accuracy topography and orthomosaic maps from qualified drone companies can make this a reality.

The envisioning stage of every project involves a feasibility study across a number of fields, from funding to approval, to construction to ultimate return on investment. All the professionals involved in this process – from contractors to zoning boards, county authorities and local inspectors, and from investors to architects – will look at photographs first as the realistic view before moving on to any of the detailed drawings.

Drones can quickly and affordably fly over areas of varied terrain and capture potentially millions of data points for later software manipulation, all the while bringing back superb, high-resolution photographs that present all this data in a way that humans can immediately relate to.

Survey Accuracy

While drone affordability and rapid delivery time make drone surveys a game changer in the initial thinking and investment stages, the great feature of drone imagery lies in its accuracy, which benefits subsequent development work. Photographs and videos present a mass of data in a clear way, but engineers need drawings and measurements.

As planning evolves, the data returned from the initial drone survey can be overlaid into maps, topographic contour lines and even 3D models. These output files can be imported as shape-files, Autocad/DXF files and other industry-standard formats, integrating right into your existing workflow. Because the drone can fly close to the ground, and can maneuver dexterously around structures, true oblique imagery is returned showing side features that can’t be captured from higher above by satellite or plane.

Assuming the data commissioned is dense enough, drone survey images will be orthorectified to match not only their map coordinates but the elevations at each point also. Orthomosaic mapping results, with all images stitched into a coherent whole. Drainage and elevation calculations can be made from drawings all produced at scale across the parcel.

The great bonus of the drone is that its spectacular photography is also accurate enough to offer precise measurements, to within centimeters or finer. Many times, depending on the level of service commissioned, the exploratory survey data can be incorporated into the eventual construction work.

The Industry

The skill sets of a drone company and a survey firm are quite different, and as the field of drone surveying evolves, developers are using specialized drone service companies that also work extensively with surveyors. Piloting drones and investing in their rapid technological innovations typically takes a specialized drone company, while surveying is a professional skill. The two fields are synergizing well together, and real estate development loves it.

To gain a clear vision of our land we once had to go to the mountain top. Then we had planes, and then we had satellites, and now finally drones have supplied the missing piece of land development. Land surveying, and real estate developers, were always waiting for drones.

Source: Drone Life

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Survey of Aggregate Quarry is Safer — and 20x Faster — Thanks to Drones

Hydrogeologist Uses Drone-Generated Maps and Models as Water Management Tool at Ontario Quarry

In the aggregate industry, water management and extraction from below the water table go hand in hand. If it isn’t managed well, surface water and groundwater can collect in the quarry and affect day to day operations. The aggregate industry usually relies on time-consuming ground surveys to gather the elevation data needed to make water-management decisions. Drone maps improve the development of the water management plans for quarries. By using drones to survey an Ontario aggregate quarry, Tecia White of Whitewater Hydrogeology Ltd. not only improved jobsite safety and gathered a richer set of data, but she did it all twenty times faster than a traditional ground survey.

Tecia White, President at Whitewater Hydrogeology Ltd.

Tecia White, President at Whitewater Hydrogeology Ltd.

Tecia White has over nineteen years of experience as a geologist and hydrogeologist. She spends most days solving hydrogeological challenges through her environmental consulting firm, Whitewater Hydrogeology Ltd. The firm primarily works with aggregate operators in southern Ontario to help them understand the influence of existing and proposed operations on the groundwater and surface water regimes. A little over a year ago, Tecia began offering a new service to Nelson Aggregate Co. and began incorporating drones into her work as a way to analyze stockpile volumes. But it wasn’t long before she discovered that drone maps and models could give her far more than just volumetric data. She tells the story of how she used drone-generated maps and 3D models as a tool for gathering elevation data and creating water management plans at Nelson Aggregate’s Uhthoff Quarry. Nelson Aggregate has also taken the use of the drone one step further by using it to inspect the operating condition of large production equipment.


Drone-Based Stockpile Analysis is “Miles Ahead of Standard Surveying”

As Tecia puts it, “Everyone should be using drones for stockpile analysis. It’s miles ahead of standard surveying.” Tecia would know. Over the past year, she has fired up her drone nearly a dozen times at six of Nelson Aggregate’s gravel pits and limestone quarries. What began as a way to inventory stockpile materials has quickly become a key tool in her everyday workflow.

Tecia spoke with us about the maps and models she created at the Uhthoff Quarry, which is owned and operated by Nelson Aggregate. The 1400 acre aggregate quarry supplies various limestone products to the construction industry. Over the past year, Tecia used her DJI Phantom 4 several times each season to map major stockpiles, then used DroneDeploy’s stockpile analysis app to inventory the materials. In a matter of minutes, she was able to measure the cut, fill and volume of any stockpile she mapped.

She also used DroneDeploy to conduct a complete aerial survey of the quarry multiple times throughout the year. From creating drainage and discharge plans, to estimating the volumes of overburden material that must be removed, Tecia used drone-generated data in nearly every aspect of her work at the quarry.

Hydrogeologist Tecia White used DroneDeploy’s stockpile analysis tool during her work at a southern Ontario aggregate quarry.

Hydrogeologist Tecia White used DroneDeploy’s stockpile analysis tool during her work at a southern Ontario aggregate quarry.


Aerial Surveys are Twenty Times Faster than Ground-Based Methods

Continual changes across the landscape of the quarry makes water management an ongoing process. At a site like the Uhthoff quarry, elevation data is usually gathered twice a year. But before drones entered the picture, this information could only be gathered by ground survey. It takes upwards of twenty man hours to survey and process data for a 1400 acre quarry. And even then, the survey would only gather the elevations of individual stockpiles, and occasionally spot elevations for the quarry floor.

An aerial survey of the Ontario site, on the other hand, takes Tecia just two hours to complete, including both flight time and data extraction. Tecia’s drone not only gathered accurate elevation data for the entire 1,400 acre site, but it did so twenty times faster than a ground-based survey of just individual stockpiles. This represents a far greater data set and a ninety-five percent reduction in man hours.

A ninety ninety-five percent man hour reduction is impressive enough, but the biggest return-on-investment can be seen by looking at time and money savings over all six of Nelson Aggregate sites. A bi-annual survey of six quarry sites represents about 240 man hours. Compare that to just twelve hours needed to complete twice-yearly aerial surveys at all six sites. That’s a savings of 228 man hours.

In terms of money savings, the results are no less impressive. Nelson Aggregate spends about $3,000 to subcontract out a single ground survey. Bi-annual ground surveys of all six quarries cost around $36,000 total per year. Factoring in drone equipment and software subscriptions, the same amount of aerial surveys cost just $7,500 — $28,500 less than a ground survey. This represents nearly 80% in costs savings.

By replacing ground-based surveys with bi-annual aerial surveys, Nelson Aggregate saved a total of 228 man hours and $28,500 across six quarry sites.


Drones Improve Worker Safety at Aggregate Operations

With steep slopes, unstable rock faces and lots of heavy machinery, rock quarries can be dangerous places to work. Aggregate operators are always looking at field methods to improve the safety of the work environment. As Tecia sees it, one of the greatest benefits of drones is their ability to improve worker safety by removing the requirement to have men on the ground in and around the operation areas (stockpiles, equipment).

“Anytime you can reduce the number of workers in a quarry it is going to reduce the chance of injury and improve overall safety,” — Tecia White, Whitewater Hydrogeology Ltd.

Instead of spending twenty hours navigating stockpiles and quarry terrain to complete a ground survey, flights are launched outside of the operating quarry and pit working areas. All of the elevation data needed for the Ontario site is now gathered without ever setting foot within the operation. This improvement alone is worth the investment in drone technology.

“Anytime you can reduce the number of workers in a quarry it is going to reduce the chance of injury and improve overall safety,” says Tecia. “Drones allow us to do that.”


Drone Maps and Models Give Hydrogeologist a Rich Data Set

Although Tecia first set out to gather elevation data and stockpile information, she soon discovered that her drone provides a rich set of data that is useful in many other aspects of quarry management. “With a surveyor you’re just getting the data,” says Tecia. “There are no maps or models.”

Now, with the help of DroneDeploy, Tecia uses her drone maps for far more than elevation data and stockpile analysis. With accurate drone maps, DroneDeploy’s built-in volume tool is used to estimate the amount of overburden material that must be removed prior to the extraction of aggregate. High-resolution 3D models allow her to remotely assess progressive and final rehabilitation work. She also uses the models to conduct aerial circle checks of heavy machinery, searching for issues that would not be visible from the ground.

Speaking to others who work in hydrogeology and quarry management, Tecia has these words of encouragement about using drones: “Embrace the change and move forward. This technology is working.”

Article pulled from DroneDeploy.


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