An easy-to-use solution to prevent utility accidents

Waskita Karya（Persero）TBK是印度尼西亚领先的州公司之一，在基础设施发展中起着重要作用。Waskita Karya成立于1961年，最初参加了与水有关的项目工作，包括填海，疏ed，港口和灌溉。但是，自1973年以来，该公司已开始在更广泛的建筑活动中发展其作为总承包商的业务，包括道路，桥梁，机场，废物加工厂，水泥厂和其他工业设施。

该公司最近引入了Leica DSX, utility detection solution, to reduce accident during excavation works and to mitigate money loss due to fines caused byutility strikes. By carrying out utility detection before earthwork jobs with the Leica DSX, Waskita Karya increased the speed, efficiency and safety of its on-site works.

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On-site utilities detection and documentation

The Bekasi-Cawang-Kampung Melayu Toll Road or shortly Becakayu is a motorway constructed over the Kalimalang River to decrease traffic congestion around Kalimalang. The construction of the motorway section was finished in 2018. Since then, Bekasi has started to grow rapidly and has now become an "escape" to citizens who can't afford to purchase their property in Jakarta. Besides, Bekasi has also become an important satellite city of Jakarta.

来自2016年BPS（统计中心）的数据显示，从Bekasi到Jakarta的通勤者约有359.531个通勤者，这增加了交通拥堵，例如在高峰时段驾驶2-3小时的距离为15公里。因此，政府启动了Becakayu高速公路的建设，该高速公路将沿21,042公里连接到​​雅加达，总投资总计高达72亿IDR。

With Becakayu Elevated highway the same route will only take 30 minutes. This highway project has a vital role in accelerating traffic, as well as goods transportation and services distribution connecting the two major cities.

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The challenge

Waskita Karya was contracted for the entire design and building of the infrastructure and the motorway. On this current project (Becakayu Phase 2A – edge), along with over 700 meters, the contracted team is passing through various terrain and asphalt conditions. The section consists of 48 pillars (foundation) with different dimensions, and those pillars are embedded from 5 m up to 10 m depth.

在早期过程中，必须确保柱子的设计是正确且安全的，以嵌入5或10 m的深度。只有在此步骤之后，施工过程才能开始。
Typically, there are plenty of utilities buried underground, especially as the project site dominantly is in the inner city and some of the utilities are critical such as electric cables, oil and gas pipes. Those utilities are usually buried under 2 m depth; therefore, right after the predesign of the pillar's position, it's necessary to check the real situation on-site, before the construction begins.

The reason behind this is to avoid utility strikes when doing excavation work. If the on-site check is indicating that the planned pillar's position will jeopardise the utilities, the location of the pillar's need to be re-designed and sometimes, the dimension of the pillars themselves needs to be redone.

"Due to the short timeline of the project and a complex scope-of-work, we needed a solution which could enable us to detect buried utilities easily, but precise. Quickly means here is not only easy to use and operate but also easy to analyse and get the results. We needed a solution that allows us to know the accurate position of the utilities easily and quickly and could get the documentation immediately," explains Luki Danardi, Senior Vice-President for TREK Division.

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The solution

The easiness to operate the Leica DSX and the visualisation in real time with the DXplore software, detecting buried utilities became much more straightforward, and anyone could do it without the need to having ground penetrating radar (GPR) background expertise. With little training, the staff was able to use without any issues.

除此之外,软件允许检测埋utilities underground faster yet precise. Allowing also to export the data collected onto various file's format (CAD or BIM Software), which allowed the data to be used later on with other divisions or even send directly to the excavator's machine control system.

"Leica DSX is supporting us in detecting all types of buried utilities, such as water pipes (PDAM), fibre optic cables, and oil and gas pipe, with high resolution. Thus, we could avoid the risk of utility strikes during construction, saving us time and avoid additional costs to the project. To reduce utility strikes during excavation works and to mitigate the loss of money due to fines caused by the failure of works," explains Danardi.

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结果

"We could detect buried utilities in our project so it could mitigate the accident during the construction and pay-fine due to the failure of excavation. Comparing with old methods we used; this equipment is helping us a lot, from time savings until cost savings and delivering accurate design for an infrastructure project，” Danardi解释说。

Besides the cost and time savings, the detection solution is easy-to-use, and the learning curve is very low. Due to the logical and user-friendly interface of the Leica DSX, Waskita Karya only needed one-day training, which was conducted by Leica Geosystems team.

"Start from that day; our internal team have been able to operate the GPR correctly. They could even teach their colleagues to use the system,"总结说丹纳迪。