Compiled Reference Document - MCU25/0020 (As Published)

Table 5: Estimated Settlements Under Raft Slab

                       Description                            2 Storey Building + Double Basement

            Approximate Elastic Settlement                                  < 10 mm
       Approximate Consolidation Settlement                               Up to 15 mm
              (in addition to above)
         Approximate Secondary Settlement                                 Up to 15 mm
            Approximate Total Settlement                                  Up to 30 mm

The elastic (immediate) settlements should mostly occur during the construction and initial loading
phase; however, ongoing consolidation and secondary settlement will occur over the design life of the
building, which should be considered in the design. Further analysis should be carried out once
structural design details and building loads are finalised to confirm the above estimates remain valid.
Settlement parameters were based on published and empirical correlations with in-situ test results from
the boreholes. An output from the Settle 3D modelling is presented in Text Figure 8.
It should be noted that concentrated wall/column loads or peak perimeter pressures exceeding 55 kPa
(soil contact pressure) could substantially increase settlement and thus, piled footings may be required in
these areas.




                              Text Figure 8: Settle 3D output of Total Settlement




Geo-environmental Investigation Proposed Residence
4 June 2025 | 25040-001-Rev1                                                                             15