Commercial Geotechnical Solutions

Multi-storey commercial buildings require comprehensive investigation including borehole spacing per AS1726, minimum 3m below foundation level extending to competent bearing stratum. Melbourne's basalt/mudstone profile necessitates rock coring, pressuremeter testing for settlement analysis, and dynamic testing for pile capacity verification. Investigation depth typically ranges 15-30m depending on structural loads and geological complexity.

CBD projects require detailed hydrogeological assessment, groundwater modeling, and dewatering design with environmental compliance. We design retention systems (secant/diaphragm walls) with groundwater cut-off, implement building settlement monitoring programs, and obtain permits for controlled blasting in Silurian rock. Finite element analysis ensures minimal impact on adjacent heritage structures.

AS2159 requires preliminary test piles for working loads greater than 1000kN, with static load testing to 200% working load. For high-rise applications, we implement comprehensive testing protocols including PDA monitoring on greater than 90% production piles, CAPWAP analysis for setup/relaxation effects, and integrity testing using PIT/CSL/thermal methods. Load testing frequency increases with structural importance levels per AS1170.

We utilize CPT/SPT correlations, pressuremeter testing for in-situ modulus determination, and laboratory consolidation testing on undisturbed samples. For Melbourne conditions, we account for variable weathering profiles, analyze both immediate and consolidation settlement using Schmertmann/Burland methods, and apply appropriate factors of safety per AS3600. Finite element modeling addresses complex loading scenarios.

Design incorporates soil-structure interaction analysis, lateral earth pressure calculations with seismic coefficients per AS1170.4, and stability analysis against base heave/piping. We assess construction methodology impacts, temporary works design, and implement real-time monitoring systems with automated alert protocols. Rock excavation requires pre-split blasting design and vibration monitoring compliance.

Projects require signed reports by chartered professional engineers (CPEng/RPEng), NATA-accredited laboratory testing certificates, and compliance statements for relevant Australian Standards. We provide inspection and test plans (ITP), construction compliance reporting, and professional indemnity insurance documentation. All deliverables meet council submission requirements and Building Code of Australia compliance framework.