Using laser scanning technology for retail redevelopment

Author: 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调查，一家为商业，资源和住宅行业提供端到端的调查解决方案的澳大利亚公司很高兴参与其最近的项目，当时一家建筑师公司与该项目联系，以创建调查级的建筑和结构修订BIM模型Kardinya Park购物中心的重建。毕竟，该公司有一个新的Leica RTC3603D laser scanner.

The Perth shopping centre is expanding and upgrading the facilities to elevate the overall appeal of the centre and to bring new shops, mixed-use amenities and a multi-deck covered parking to the local community.

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.

速度扫描和建模

RM调查团队使用了一些Leica Geosystems解决方案来捕获，建模和分析数据。在外部，该地点的西南角有很大的地形变化，并具有高固定壁。为了更好地捕获和表示3D空间中的复杂地形，RM调查团队使用了一些Leica GeoSystems解决方案来捕获，建模和分析数据。

Starting with theLeica ScanStation P40survey-grade laser scanner, the surveyors used the P40 for the external facades due to its long-range capability. It was the first project the team had an opportunity to integrate its new RTC360 3D laser scanner into its workflow.

为什么是RTC360？选择RTC360是因为其可移植性，捕获的数据的现场预注册和强大的可视化功能。在白天，团队在现场购物中心的现场工作，购物者漫步，RTC360的紧凑而光滑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，完整的点云，并提高了团队的生产力。

集成RTC360的另一个优点取决于3D激光扫描仪的紧凑设计与扫描和Go uplift 500相结合，作为捕获天花板腔的现成解决方案。

的高速RTC360对RM苏是显而易见的rveys team when it comes to improving site workflow – the team doubled the number of scans they were able to do per day. The automated targetless field registration (based on VIS technology) and the seamless, automated transfer of data from site to office reduced the time spent in the field and the time the team had to spend on tightening the final registration, helping them eliminate a large portion of office work. To quantify the time saving, the team was able to complete the job 45% faster using the RTC360.

该团队每天使用RTC360进行大约150次扫描，其中大多数扫描以中等分辨率完成，而购物中心的一些较小区域则以低分辨率为单位。该项目总共产生了1200次内部和外部扫描。最初，团队的任务是完成外部工作。看到数据后，客户对可交付的印象深刻，以至于团队也被录用并能够在五天内完成内部扫描。

清洁了这些扫描中的捕获数据，并最终使用Leica 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

从一开始，团队就接触了该项目，希望他们能完成完整的范围，并根据完整的范围计划所有的测量方法。这涉及建立一个广泛的控制网络，并涉及无人机捕获，地面穿透雷达以及与许可测量师的咨询。

In addition, the RM Survey team ensured that they were consulted as spatial consultants, as to what data would be used for moving forward.

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.

By consulting and understanding this information early in the project, the team had the foresight for when three months down the track they would be asked by a fabricator if the Revit BIM model was suitable to use to fabricate steel from.

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.