Moving a capital city forward

迫切需要该城市近600万人口中有90％的人口，迫切需要一种可持续的公共交通系统。但是，目前的公共交通系统几乎不存在，没有地铁，也没有在城市内行驶的公交线路。2014年，地面被打破，开始了利雅得地铁项目，2018年底雄心勃勃的日期。

该市的第一个铁路地铁将有6条线，其中85个站覆盖了176公里，地下约有40％。地铁每天将能够搬出多达300万乘客。总的来说，该项目的投入约为201亿欧元。

Finding common global solutions
为了建立世界上最大的基础设施建设项目之一，它占据了多元文化团队。三个跨国联盟正在合作该项目，结合了来自世界各地的公司。

FAST Consortium, led by FCC Construccion from Spain with Freyssinet of Saudi Arabia, Atkins of England, Alstom and Setec from France, Samsung C&T from South Korea, Typsa also of Spain, and Strukton of The Netherlands, was contracted to construct and design Lines 4 (Yellow), 5 (Green) and 6 (Purple) of the metro. The project oversees 64.6km of the rail track, 29.8km of viaducts and 24 stations at an overall cost of 7.1 billion Euros.

Construction of these three lines is overseen by three partners in the Consortium: FCC Construccion, Samsung C&T and Strukton. Each line has a dedicated survey team with all using solutions from Leica Geosystems.

负责第6行（紫色）的Strukton负责捕获用于地形调查的数据，拟合检查，计算和现有实用程序的清单。专门从事铁路系统和民用基础设施的技术公司还负责建筑和偏差监测的遗物。

“Though these are typical tasks for us, the sheer size of the project is new for us,” said Clemens Tierie, survey manager for Strukton. “Only on Line 6, I have 28 teams with more than 10 nationalities represented.”

有了如此多样化的组合，Tierie需要找到所有团队成员熟悉的通用解决方案。他发现在Leica Geosystems。Strukton团队结合了总站，GNSS接收器bob apple以及施工激光器和水平与测量软件相结合的组合，可以按时按时完成该项目。

Tierie说：“测量是团队合作，来自世界各地的测量师都知道并欣赏Leica Geosystems Solutions。”

与元素竞争
在如此大的项目中，由于雄心勃勃的截止日期超过四年，Tierie知道球队不允许任何中断。

First, working in temperatures upward of 50 degrees Celsius in desert conditions, they needed to be able to trust the instruments to withstand.

“由于我们的时间表，我们已经有很多天必须直接工作。我们迫不及待地等待晚上或温度凉爽。”“借助我们的Leica Viva TS15总站的耐用性，我们能够在工作日的任何部分都进行高临界性的占有性。这使我们能够确保一切都准备好按时开始。”

Using Leica Geo Office and Infinity software, the team was able to instantly transfer reality capture data back to the office from the field for quicker processing. This way, if there were extra measurements needed, the team could do so while on site without having to return later.

该团队还使用Leica Rugby旋转激光和施工水平来进行准确的AS构建检查。凭借几乎所有的Leica Geosystems仪器能够从-20到50摄氏度运行，Strukton团队都按计划完成该项目。

Next, as the largest city in the country and with a unprecedented growth in the past decade, the city’s utilities have created a complex infrastructure challenge. While constructing the Riyadh Metro Line, the team had to remain vigilant not to interfere with any of the buried utilities or lines running above, many times not knowing exactly where these utilities were located. Combining the Leica GS14 GNSS smart antenna with the Leica GR10 GNSS reference station receiver, Tierie and his team were able to precisely locate and account for rogue utilities. Saving precious time and avoiding dangerous utility strikes, the team was able to work quicker, safer and more efficiently.

“Due to precise locating abilities of these instruments, we were able to inform our designers in the early stages of the project exactly where the utilities were located so they could incorporate this new information in the metro design,” said Tierie.

Finally, the constant ongoing construction put roads and buildings in unstable environments. With the vibration from heavy machinery, such as when excavating trenches for cut and cover tunnels, these city assets were in danger of uneven and unsafe settlement. In conjunction with their measuring task, the surveyors were also in charge of monitoring the ongoing construction and its impact on the surrounding areas.

“With the accuracy of the Leica TM50 total station, we were able to quickly determine if construction operations were negatively impacting surrounding structures,” said Tierie. “Improving the safety for the crew and community, our work has been well received here in Riyadh.”

该团队未来计划使用Leica Geomos监视软件来补充监视过程，以便即时警报到结构中的偏差。

全球支持
Perhaps even more critical in an international environment such as the construction site of the Riyadh Metro Project is the assurance of support at anytime, anywhere.

Tierie说，他通过Leica Geosystems的共同努力在沙特阿拉伯安排了该项目。他的前Leica Geosystems网络在荷兰的迪拜和瑞士地区的支持下，利雅得当地的经销商都投入了下来，以使该项目成为可能。自2014年该项目开始时搬到沙漠国家以来，他一直依靠他从Leica Geosystems的许多地点获得的出色支持。

“ Leica Geosystems Solutions的质量很棒，但是对我的支持是最大的好处。我得到了荷兰Leica Geosystems，迪拜和当地经销商SITML的很好的支持。” Tierie说。“由于积极的客户服务支持，我们可以快速有效地处理我们在现场遇到的任何问题。”

莫妮卡·米勒·罗杰斯（Monica Miller Rodgers）撰写