Installing Of SHEET PILE WALL August 2004 Designed & created by C2 Design Studio Pte Ltd For those who have any suggestions or feedback, please call our Customer Support Line: 1800 – CALL LTA 1800 – 2255 582 While noise, dust along with other inconveniences are inevitable throughout construction, LTA works carefully using the contractor to ensure that they’re low. The subterranean retaining wall is installed before excavation commences. The retaining wall could be a concrete diaphragm wall, a concrete bored pile wall or perhaps a steel sheet pile wall with respect to the site condition, soil type and also the excavation depth. 01 . Installing of Retaining Wall The soil is excavated towards the first strut level. The very first level strut is installed prior to the excavation proceeds further. The subterranean Rapid Transit System (RTS) stations and cut-and-cover tunnels are usually built through the -open-cut and bottom-up- method. Within this method, our planet is excavated towards the needed depth with retaining walls and struts supporting the soil in the sides. Upon the conclusion of excavation towards the needed depth, the bottom slab from the subterranean structure is cast at the end-most level, then along side it walls. Casting of concrete progresses upwards, level by level up until the roof from the structure is finished. Ground will be backfilled and reinstated. OPEN-CUT & BOTTOM-UP CONSTRUCTION METHOD Retaining Wall 02 . Excavation & Installing of First Steel Strut Level Strut Diverted Road Suggested Subterranean Structure Construction Site Hoarding 03 . Excavation & Installing of Steel Strut 06 . Backfilling & Reinstatement Following the roof slab is finished, the soil is backfilled towards the first strut level prior to the first level strut is taken away. This really is then completely backfilling the top subterranean structure. When the retaining wall is really a diaphragm wall or perhaps a bored pile wall, the very best 2 metres from the wall is going to be removed. If it’s a wall, the sheet piles is going to be removed. First Level Strut The soil is excavated to another strut level and also the second level strut is installed. It continues up until the excavation reaches the ultimate depth or formation level. The amount of strut levels is dependent around the excavation depth. 04 . Construction of Subterranean Structure First Level Strut At formation level, the strengthened layer of concrete or base slab is built, then removing the cheapest level strut and also the side walls are built. Second Level Strut Cheapest Level Strut 05 . Construction of Subterranean Structure A higher level of slab is built, then removing the strut close to that slab level. This method progresses upwards up until the roof slab is built. Roof Slab Formation Level Backfill Base Slab Side wall Completed Subterranean Structure Reinstated First Road Level Strut

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