可视化破坏，创建亚特兰大地标

Author:Renata Barradas

The team atDarden＆Companyhas been managing largescale construction projects in the Atlanta, Georgia, USA, area since 1999. Its portfolio includes the training facility of Major League Soccer team Atlanta United, the Arthur M. Blank Family Office Building, and several other large hotel, condominium, office and mixed-use buildings.

The biggest project to date was the construction of the Mercedes-Benz Stadium, the associated demolition of the Georgia Dome, and the construction of The Home Depot Backyard. That such an immense project was entrusted to a local firm is a testament to the confidence the Atlanta community has in Darden & Company.

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Documenting one of the largest covered stadiums

在亚特兰大的梅赛德斯 - 奔驰体育场结束后，达登＆公司的任务是管理佐治亚州圆顶（有史以来最大的覆盖体体育场之一）的内爆 - 随后建造了娱乐场所。该公司发现，无人机（UAV）图像和映射服务是按计划保持项目并与从上到下与利益相关者进行沟通所需的。

佐治亚圆顶是70,000-seat stadium在亚特兰大。建造时，它是世界上最大的覆盖体。圆顶是NFL亚特兰大猎鹰的家24 seasons，在当时，它的托管超过1,400 events参加超过3700万观众。It was demolished in November 2017, after the completion of the Mercedes-Benz Stadium just83英尺(approximately 25 metres) away.

家得宝后院是44,515平方米的绿色空间located on the former Georgia Dome site. It’s the perfect spot to tailgate before a Falcons game, see an outdoor movie, or attend a community festival.

The story of how the Georgia Dome became The Home Depot Backyard is the story of5,000 pounds(about 2,268 kilograms) of explosives, tons of debris, and nearly a year of hard work — and Multivista was there to document all of it.

Data generated included:

• 33,085 Images captured
• 生产的70个天线天线视频
• 535千兆字节处理的数据量

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第一个挑战 - 保护邻居

The Georgia Dome was bordered by the Georgia World Congress Center to the north and the new Mercedes Benz Stadium to the south. One of the major considerations of the demolition was verifying these buildings weren’t damaged by the implosion.

Project management firm Darden & Company was contracted to coordinate and oversee the many players contributing to the demolition of the Georgia Dome and the construction of The Home Depot Backyard. The team at Darden & Company hired Multivista to capture detailed imagery of the neighbouring structures and the Dome itself immediately before and after demolition.

“爆炸是精心计划的，以避免损坏，但我们想确保我们有很多世界国会中心和新体育场的图像，以防万一发生任何意外发生的资源。”says Jason Hughes, senior vice president at Darden & Company.

Multivista使用基于地面的图像和无人机在内爆之前和之后立即在视觉上记录所有三个建筑物。Darden＆Company与五家合作伙伴公司共享了所有捕获的视觉文档的访问权限，以进行审查和验证。

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Second challenge – Tracking material removal

When you destroy a70,000-seat stadium, you get a lot of debris. Removing all that rubble and bringing in new materials for The Home Depot Backyard was a monumental challenge — but Darden & Company, with its unparalleled largescale project management experience, was more than ready.

Darden＆Company使用Multivista使用无人机映射记录项目网站。Once a week, Multivista pilots would fly UAVs over the site, collecting visual data. That data was processed through an advanced photogrammetry engine to produce a map that could be accessed from within the Multivista platform. Project stakeholders were able to annotate the map, use it tomeasure distance, volume, area and elevation, and export the captured data to创建3D模型。

“我们将拍摄上周的航空地图，将其并排与本周的地图进行比较，以便我们可以说出过去一周中删除的内容的数量，大小和规模，”says Hughes.

“In the past, we may have said ‘Wow, it doesn’t look like that rubble pile’s moving.’ But that’s a subjective opinion and this was not. We took that out of the equation, which allowed us to be more proactive and knowledgeable about the project.”

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Third challenge - Communicating with stakeholders

Multivista’s aerial images and orthomosaic maps were invaluable for communicating with project stakeholders who wanted to keep tabs on progress without having to visit the site. Hughes describes weekly principal’s meetings where project stakeholders would review the latest UAV map and discuss next steps.

“我们能够使用空中数据在内部和外部进行进度。‘是的，我们最重要的是，’“是的，我们正在管理它，”“是的，他们打了约会 - 这就是我们能说的，’”休斯说。

In addition, the aerial imagery turned out to be a great way to send updates to Arthur Blank, co-founder of The Home Depot and owner of the Atlanta Falcons.

“Mr. Blank loved seeing the aerial pictures with our weekly updates,”says Hughes.“We used them to communicate progress, so he could ask questions. There’s no better tool for communication than these aerial images.”

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Visualisation takes many forms

Darden＆Company使用Multivista在佐治亚州圆顶内爆和家得宝后院以及梅赛德斯 - 奔驰体育场的建设和设施管理上提供了广泛的服务。

These services spanned over four years and included site surveys, interior and exterior progressions, pre-slab, underground utilities, and MEP Exact-Built® documentation, owner training videos, and live-streaming webcams. Deliverables to document this four-year transformation included:

• UAV images
• UAV flyover videos
• 空中映射
• Photo
• 视频
• Live-stream webcam
• Webcam time lapse

“Originally, we were talking about putting up a webcam for the Falcons to use on the PR [Public Relations] side, just to give fans the latest and greatest,”says Hughes.“但是，由于我们正在从事多个项目，因此我们知道我们可以使用多维斯塔来管理日常活动。在前端这是一个非常简单的决定，我们肯定已经从中获得了价值。”

The Home Depot Backyard opened to the public, on time, in September 2018.