Using laser scanning technology for retail redevelopment

作者：Bjorn（Bernie）Bernhardt, RM Surveys Survey Manager - Construction & HDS.

Bjorn is a leader in laser scanning and BIM technology with a wealth of experience in infrastructure and commercial construction projects, such as New Perth Stadium. He is a keynote speaker for industry and universities championing spatial technology survey solutions.

RM Surveys, an Australian firm who provide end-to-end survey solutions for commercial, resource and residential industries was excited to participate in its recent project when it was contacted by an architect firm about creating a survey-grade architectural and structural Revit BIM model for the redevelopment of the Kardinya Park Shopping Centre. After all, the firm had a newLeica RTC3603D激光扫描仪。

珀斯购物中心正在扩大和升级设施，以提升该中心的整体吸引力，并将新商店，综合用途设施和多层覆盖的停车场带到当地社区。

The client needed a Revit BIM model for architects, engineers and facility managers to accurately plan the work needed. The RM Surveys team was tasked by the architect firm to capture the 90,000m2 site area, supply a complete as-built deliverable of BIM Level of Development (LOD) 300 for the exterior and LOD 200 for interior for general planning, early involvement and consultation review and to help with the conceptual design.

Scanning and modelling with speed

The RM Surveys team used a couple of Leica Geosystems solutions to capture, model and analyse the data. Externally there were very drastic topographic changes along the southwestern corner of the site with high retaining walls. To better capture and represent the complex topography in a 3D space the RM Surveys team used a couple of Leica Geosystems solutions to capture, model and analyse the data.

Starting with theLeica Scanstation P40测量师的测量级激光扫描仪由于其远程功能而将P40用于外墙。这是该团队有机会将其新的RTC360 3D激光扫描仪集成到其工作流程中的第一个项目。

为什么是RTC360？选择RTC360是因为其可移植性，捕获数据的现场预注册和强大的可视化功能。在白天，团队在一个现场购物中心的现场工作，随着购物者漫步，RTC360的紧凑而时尚的设计并没有阻碍购物者。通常，当扫描高流量的地区（例如购物中心）时，行人会创建“幽灵点”，从而覆盖感兴趣的对象，并且需要在办公室的后处理阶段手动删除。删除这些幽灵点后，它们留下了缺失点的空白，并且在最终扫描数据的背景中可见。利用RTC360的双重扫描功能意味着捕获的数据导致了干净，完整的云，并提高了团队的生产力。

Another advantage of integrating the RTC360 comes down to the compact design of the 3D laser scanner combined with the Scan & Go UPLIFT 500 as a ready solution to capture ceiling cavities.

RTC360的高速在改善现场工作流程时显然是RM调查团队 - 该团队每天可以进行扫描的数量一倍。自动化的无目标现场注册（基于VIS技术）以及从站点到办公室的无缝自动传输的数据减少了在现场花费的时间以及团队在收紧最终注册上花费的时间，帮助他们消除了大部分办公室工作。为了量化节省时间，团队能够使用RTC360更快地完成工作45％。

The team conducted approximately 150 scans per day using the RTC360 with most scans completed in medium resolution, and some of the smaller areas of the shopping centre in low resolution. A total of 1,200 interior and exterior scans resulted from the project. Initially, the team was tasked to complete the external work. After seeing the data, the client was so impressed with the deliverable that the team was also hired and able to complete the internal scans within five days.

The captured data from these scans were cleaned and finally registered usingLeica Cyclone REGISTERpost-processing office software. Autodesk ReCap was used to produce rcp files for the LOD 200 and for more detail LOD 300 modelling in Autodesk Revit.

得到教训

From the get-go, the team approached the project hoping that they would do the full scope and planned all the surveying methodology according to the full scope. This involved setting up a broad control network and involved drone capture, ground-penetrating radar and consultation with licensed surveyors.

此外，RM调查团队确保将他们作为空间顾问咨询，以涉及哪些数据用于前进。

It’s important to note the consultation and communication early in the project scope. For the RM Surveys team this involved consulting on the accuracy of drone data compared to point cloud data captured from the ScanStation P40 and the RTC360.

通过咨询和了解该项目的早期信息，该团队具有远见卓识的距离，该轨道将被制造商询问他们是否适合用来制造钢的修订版BIM模型。

One piece of advice from the RM Survey team is to spend more time in the planning stage, considering multidisciplinary opportunities and foresee what the client’s future requests or questions might be.

By doing an external full site laser scan survey upfront, we were able to save the client time and money by producing information and drawings for multiple sub-contractors without the need for anyone to remobilise to site.

This would not have been possible without the speed and data-rich product achieved by combining the technology of the RTC360, P40 and Leica Cyclone REGISTER. Without this technology, a large amount of this survey would have been completed using traditional methods which takes more time and delivers less information to the client.

This project is just one of many examples where RM Surveys use the latest technology to capture reality and transform it into a 3D model.