Appendix F - Geo-Environmental Investigation Report · RAL24/0003

                               PROPOSED SUBDIVISION
                               41 TALLOWWOOD PLACE, BLACK MOUNTAIN




Text Figure 14: Footing depth required to prevent undermining or surcharge loading

Footing bases must be cleaned following mechanical excavation to expose undisturbed materials over the
full base area. It is essential that the piling contractor have a ‘mud bucket’ or similar device to enable clean
out of the pile bases.

If any soil conditions encountered during construction are found to differ from those noted in the geotechnical
investigation, Tectonic should be notified immediately, and an inspection carried out to determine if changes
to footing design are required.

6.4       Retaining Structures
Design for retaining structures could be carried out using a pressure distribution applicable to the wall type
and based on the parameters listed in Table 3 overleaf. The values in Table 3 assume that the walls are
fully drained, and no allowance is included for hydrostatic pressures, construction loading, up-slope footing
loadings, the effects of sloping ground and backfill compaction stresses.




22 May 2023
Report No. 23099-001-Rev0                                 17