Merrylands NSW — 22-Storey Building

HomeProjectsMerrylands NSW — 22-Storey Building

Project Case Study

Construction Support

Residential Developer

Merrylands, NSW

Geotechnical Investigation

Groundwater & Dewatering

Instrumentation & Monitoring

Project Overview

About
This Project

KFM Geotech supported a 22-storey building development in Merrylands from investigation through to construction. The engagement covered geotechnical site investigation, groundwater monitoring, hydrogeological assessment, permeability testing, a dewatering management plan, vibration monitoring, inclinometer installation and movement monitoring, and construction-phase geotechnical support.

Scope of Works

Investigation & Groundwater

Geotechnical Site Investigation

Borehole drilling with rock coring, in-situ testing and laboratory testing to define the ground profile beneath the building footprint.

Groundwater Monitoring

Installation and monitoring of groundwater standpipes to establish water levels and how they vary over time.

Hydrogeological Assessment

Assessment of groundwater conditions and the inflow expected into the basement excavation.

Permeability Testing

Field permeability testing to derive the hydraulic parameters used in the dewatering assessment.

Construction Phase

Monitoring & Support

Dewatering Management Plan

Preparation of the dewatering management plan governing extraction and discharge through the excavation.

Vibration Monitoring

Vibration logger installation and monitoring through piling and excavation adjacent to occupied properties.

Inclinometer Monitoring

Inclinometer installation and movement monitoring to track deflection of the retention system as excavation progressed.

Construction Phase Support

On-site geotechnical support through the construction phase, including inspection and testing at ground-related hold points.

Results

Project Outcomes

Groundwater, ground movement and vibration were monitored continuously alongside the construction-phase inspections, so the behaviour of the excavation and the surrounding ground was tracked against expectation as the building progressed.

Slope stability confirmed — Factor of Safety ≥ 1.5
Flexible pavement design approved by certifier
Council DA requirements met on first submission
Earthworks specification accepted without amendment
Retaining wall micropile design parameters delivered on program
Construction risk reduced through early site characterisation

Standards & Compliance

All deliverables are produced in accordance with applicable standards

AS 1726

Geotechnical Site Investigations

AS 4678

Earth-Retaining Structures

Council

Local Council Requirements

Industry

Best Practice Guidelines

Austroads

Pavement Design Guidelines

What Else We Do

Related
Services

Start Your Enquiry

Need Geotechnical Advice For Your Project?

Talk to our engineering team about your project requirements. We’ll clarify the scope, advise on investigation methodology, and provide a fixed-fee proposal.

AS 1726

AS 4678

Council

Industry

Austroads

Environmental Site Assessment & Investigation

Instrumentation & Monitoring

Geo-Structure Design

Environmental Site Assessment & Investigation

Instrumentation & Monitoring

Geo-Structure Design

Pavement Investigation, Assessment & Design

Construction Phase Geotechnical Support

Geotechnical Site Investigation