SITE MANAGEMENT TEAM OF GRAND MARINA, SAIGON PROJECT CONQUER THE DEEPEST BASEMENT IN VIETNAM
On October 20, 2022, late at night, the Newtecons Site Management Team rushed to pour the second largest batch of concrete of the B4 basement at the Grand Marina project in Saigon, with a volume of up to 2,600m3.
With a total volume of up to roughly 12,700 m3, basement B4 of the Grand Marina project in Saigon includes 5 huge batches of concrete for the annulus area (excluding the pit foundation area). The Site Management Team and the Technical Department evaluated several options in order to balance cost, time, and concrete quality. The last decision was using low heat cement for large concrete batch because it helps to lower the risk of mechanical cracking caused by the thermal effect of cement hydration in concrete after construction, the thermal insulation method was also applied to increase the cement block’s efficiency.
The project’s Vice Construction Site Manager, Mr. Tran Hong Phuoc, shared: “The B4 basement of the Grand Marina, Saigon project has substantial components and a challenging building process, necessitating the Site Management Team’s intense concentration. My team is “stretching” for the second batch tonight following the success of the first. I am confident that we will achieve this significant milestone together, with the help of experienced staff, carefully monitored construction activities, and the application of numerous ideal technological measures.
Site Management Team of Grand Marina, Saigon project is determined to complete this important milestone.
The project’s basement B4 is now the deepest basement in Vietnam, with a digging depth of -29.75m. When building such a depth basement, the Site Management Team faces numerous difficulties, such as the ease with which leads to the quality of nearby construction projects subsiding, the dangers of the diaphragm wall from depths pushing up the excavation pit and lowering the groundwater, and so on.
Faced with the aforementioned challenges, the Site Management Team’s compliance with the measures has been strengthened, and all engineers are well aware of the measures; monitoring diaphragm wall displacement cyclically, focusing on areas with poor prognosis, checking reverse analysis for continuous assessment during construction; conducting exploratory excavation of the diaphragm wall in each area; closely supervising and coordinating with the Technical Department throughout the construction process. Many contingency construction plans, in particular, are prepared to respond to potential risks in a flexible manner.
The remaining batches of basement B4 are expected to be deployed and completed in late October, followed by the Site Management Team carrying out construction and excavation to the bottom of the foundation area in mid-November.
Best wishes to the Grand Marina, Saigon Project’s Site Management Team for successfully completing the important milestone and conquering Vietnam’s deepest basement.
Some images from the second batch of the B4 basement construction of the Grand Marina project in Saigon: