Merging state-of-the-art with heritage: bringing new life to a historical structure with 3D laser scanning
Case study
Author: Matthew Dowell, RM Surveys Laser Scanning/GIS Lead
Mr Matthew Dowell is Laser Scanning & GIS Lead at RM Surveys. As a geospatial data specialist with international experience, Matt champions High-Definition Surveying across the architectural, engineering and construction industries.
RM调查，为商业，资源和住宅行业提供端到端调查解决方案的澳大利亚公司很高兴成为新的一部分Western Australian Museum建筑项目。这项395.9澳元的项目包括设计和建造与现有遗产建筑集成的新建筑物；遗产修复适用于老守高，禧年，博福特和哈克特建筑物；以及新西澳大利亚博物馆网站的公共艺术项目。
戏剧性的新设计将当代建筑与历史悠久的遗产和遗产建筑联系起来。建筑师的主要任务是将历史悠久和遗产的建筑与新的最先进的结构合并。
The task? Four, heritage buildings initially made from timber required structural steel to reinforce and enable improved exhibits. RM Surveys were tasked with the laser scanning component of the project, which includes the large halls featuring 6,000 square metres of galleries to stage large scale special exhibitions, learning studios, spaces to experience behind the scenes work of the Western Australian Museum.
Going where no other laser scanner has gone before
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。从Leica ScanStation P40调查级3D激光扫描仪，测量师在大型大厅中使用了扫描仪P40，因为它在大空间中的准确性很高。
The Western Australian Museum project was the first opportunity to integrate their newLeica BLK360imaging laser scanner into the project workflow.
该团队捕获了屋顶空间和木梁，用于制造的钢铁子结构，该子结构将被预制并安装，以支撑100年历史的木梁和屋顶结构。
对于该项目的这一部分，BLK360是该工作的唯一激光扫描仪，因为没有其他产品可以匹配可移植性并访问受限的危险工作环境。该团队还需要在佩戴特殊PPE和秋季逮捕设备时使用设备进行导航。
“This project allowed us to learn about the capabilities of the BLK360 in small spaces. It was the only option our team had to capture the confined spaces, with the challenge being to maintain safety, accuracy and scope,” said Matthew Dowell, RM Surveys Laser Scanning/GIS lead.
RM调查used狮子旋风REGISTER360 post-processing office software to register and clean the final scan data.Leica CloudWorx用于直接与AutoCAD内部的点云进行有效工作，以进行木结构的3D建模。
The other challenge aside from navigating the tight space was the difficulty to gain survey control in the roof. Being a heritage building meant that the team could not cut or make any roof penetrations.
团队通过使用狮子旋风点云的云到云登记。由于屋顶空间的限制性质，调查控制只能放置在访问权限和出口指向“爬行”空间。对于细长的屋顶空间，团队可以在远端拆除几个瓷砖，并从街道上射击控制。这是为了确保数据集的准确性（主要是方向），因为团队向下移动空间（云到云可以将方向逐渐消失）。
The new Western Australian Museum opened its doors to the public on Saturday, 21 November, with a new building and a new name: WA Museum Boola Bardip. The museum was designed and built by Multiplex and Hassell + OMA, and recently shortlisted for an Australian Construction Achievement Award.
