What Does RL m AHD Mean in a Geotechnical Report?
RL means Reduced Level, AHD means Australian Height Datum. Two worked examples, a platform in cut and a platform in fill, showing what a des...
Geotechnical
Geotechnical engineering resources covering soil mechanics, foundations, and site investigation.
Everything You Need to Know About Borehole Logs
How to read an Australian borehole log: the header, main columns, soil and rock description structure, weathering grades, consistency terms,...
Geotechnical Investigation for Site Classification
How the borehole, sampling and laboratory testing program behind an AS 2870 site classification is scoped, carried out and converted into a...
Proof Rolling Test and Proof Roll Assessment
A practical guide to planning, observing and recording proof rolling of earthworks and subgrade surfaces.
Soil Sampling for Geotechnical Investigations
A practical guide to representative soil sampling, sample types, handling, identification and chain of custody.
AS 2159 Geotechnical Strength Reduction Assessment
A review workflow for applying and documenting an engineer-approved geotechnical strength reduction factor for pile resistance.
Pile Assessment: Capacity, Demand and Verification
A structured pile assessment workflow covering demand, resistance, serviceability, group effects and verification.
Settlement Assessment: Total and Differential Movement
A structured settlement assessment combining movement components, locations, differential settlement and time effects.
AS 2870 Site Classification Assessment Workflow
A standards-controlled workflow for residential site classification under AS 2870, designed for engineering review.
Boussinesq Vertical Stress Calculation
Calculate vertical stress increase beneath a surface point load using the Boussinesq elastic half-space solution.
Pile Capacity from DCP: Correlation Assessment
A cautious, configurable workflow for using DCP-derived correlations in preliminary pile assessment.
Soil Classification Workflow for AS 1726
A review workflow for soil description and classification aligned with AS 1726, without reproducing controlled standard tables.