COVER STORY Statnamic Load tests JTC has used Statnamic Load Tests for Jurong Rock Caverns and several 66 kV substations. The Static Load Test or Kentledge Load Test requires extensive equipment, a large amount of concrete test blocks to simulate the load, and a large working space. Comparatively, the Statnamic Load Test or a Rapid Load Test uses pressurised gas or hydraulics to exert force on the test pile. This test method improves productivity and lowers potential onsite hazards as it does not require the transporting and stacking of concrete blocks. With this test, preparation time is reduced from a month to less than a week. Laying of roadside kerbs Conventionally, the roadside kerblaying process involves tedious preparation work which includes the setting up of formwork, dropping of inlet chambers and final casting of concrete. This method is not only labour- and resource-intensive, it is also inflexible. JTC will be piloting the use of automatic kerb-laying machines at infrastructure projects at Tuas View Extension.
JTC Furniture Hub @ Sungei Kadut (artist's impression).
Use of Statnamic Load Tests for Jurong Rock Caverns.
The automatic kerb-laying machine is self-propelled, self-guiding and selfadjusting, whilst allowing smooth and continuous casting of kerbs of all levels and shapes. Compared with conventional methods, the use of this machine will result in a shorter construction timeline, better quality control and less low-skilled labour requirements. It is estimated that, by using a kerb extrusion machine, manpower savings of 95% will be achieved, as compared to using conventional kerb-laying methods.
Self-climbing hydraulic steel formwork Erecting formwork and falsework to shape and support concreting is labourintensive and tedious.The hydraulic selfclimbing framework, which will be used at JTC Furniture Hub @ Sungei Kadut, improves the safety of workers working at height and also increases construction productivity by generating manpower savings of more than 60%. All images by JTC
The hydraulic self-climbing framework will be used in the construction of the JTC Furniture Hub @ Sungei Kadut.
January 2017 THE SINGAPORE ENGINEER
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