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Eurocode 7 (SS EN 1997) for Singapore ERSS: Ultimate Limit State (ULS) vs. Serviceability Limit State (SLS)

Eurocode 7 (SS EN 1997) for Singapore ERSS: Ultimate Limit State (ULS) vs. Serviceability Limit State (SLS)

Key Takeaways Eurocode 7 provides the limit-state framework for Singapore ERSS, but a compliant design also depends on local ground conditions, construction stages, and movement control. ULS checks resistance against collapse, instability, hydraulic failure, and structural failure. SLS checks movements, settlement, deformation, and effects on neighbouring assets. Groundwater and soil variability must be reflected in […]

Sheet Piles vs. Contiguous Bored Piles (CBP) vs. Secant Piles: Choosing the Right Temporary Wall Type

Sheet Piles vs. Contiguous Bored Piles (CBP) vs. Secant Piles: Choosing the Right Temporary Wall Type

Key Takeaways Temporary excavation walls should be selected from the interaction of soil, groundwater, depth, neighboring assets, access, and construction sequence—not from wall type alone. Sheet piles can suit fast, reversible works where driving disturbance and water control are manageable. Contiguous bored piles provide reinforced concrete support but leave drainage gaps between piles. Secant piles […]

Designing ERSS for Kallang Formation: Navigating Marine Clay in Singapore Basements

Designing ERSS for Kallang Formation: Navigating Marine Clay in Singapore Basements

Key Takeaways Deep excavation in Kallang Formation demands a ground model that accounts for soft marine clay, variable fill, groundwater, and time-dependent movement. ERSS design is strongest when geotechnical and structural decisions remain coordinated from investigation through construction. Build the geological and groundwater model before selecting the ERSS. Treat excavation staging, support installation, and monitoring […]

Temporary King Post and Strutting Systems: Structural Detailing for BCA Approval

Temporary King Post and Strutting Systems: Structural Detailing for BCA Approval

Key Takeaways A temporary king post and strutting system is only as reliable as its design basis, connections, construction sequence, and site control. BCA approval depends on a coordinated package that explains both the engineering and how the system will be built. Define the ground, loading, geometry, and construction stages before detailing steel. Check member […]