Project Overview
Perfect Contracting was engaged as Principal Contractor to deliver the early works and excavation package for a landmark five-storey residence in Rose Bay. Our Design & Construct scope covers piling, retention, excavation, capping beams, shotcrete, and structural steel bracing, providing a complete dig-out and temporary works solution that will enable the main build.
Located on a constrained site fronting a busy road and directly opposite a school, this project requires precise engineering, careful sequencing, and community-sensitive operations. All works are governed by strict DA conditions on hours, noise, vibration, and traffic management.
Scope of Works
- Piling & retention — installation of bored and hand piles, steel bracing, capping beams, and shotcrete to secure excavation faces.
- Excavation & rock removal — staged dig-out from RL28.75 down to RL12.52, including spoil classification and EPA-compliant disposal.
- Temporary works design — scaffold, stairs and engineered access systems for safe personnel and plant movement as excavation deepens.
- Civil & concrete works — crane base, footing preparation, reinforcement, formwork and pours for structural stability.
- Traffic & site interface — DA-approved Construction & Traffic Management Plans, including haulage controls, restricted hours (09:00–16:00 weekdays, 09:00–13:00 Saturdays), and school-zone safety measures.
- Specialist plant — 30t, 15t and 5t excavators, piling rigs, concrete pumps and spray shotcrete rigs deployed in rotation.
Key Challenges & Solutions
- Tight site access & school interface: Managed with sequenced deliveries, restricted haulage windows, and controlled pedestrian crossings.
- Unknown ground conditions & design changes: Addressed through ongoing design review and rapid consultation with engineers and client representatives.
- Deep excavation safety: Implemented scaffold/stair access systems, strict exclusion zones, and continuous monitoring to maintain safe movement of crews and rigs.
- Neighbouring structures: Extra geotechnical monitoring, vibration limits and protective measures to ensure zero damage to adjacent properties.
Outcomes
- Safe delivery in progress: Works remain on schedule, with piling completion set to unlock bulk excavation and shotcrete progression.
- Zero LTIs: Safety remains the project’s top milestone — ensuring every worker and consultant returns home safely each day.
- Client relationship: Strong collaboration with the project manager ensures variations and scope changes are absorbed without delay or compromise.
- Sustainable practice: Spoil classified and disposed of per NSW EPA guidelines, with water and dust controls aligned to Woollahra DCP and DA conditions.
Project at a Glance
- Location: Rose Bay, Sydney’s Eastern Suburbs
- Scope: Design & Construct principal contracting for piling, retention, excavation, capping beams, shotcrete and crane base
- Complexity: Constrained frontage, opposite school, live traffic and sensitive residential interfaces
- Duration: 18 months (Perfect scope), forming part of a ~3 year redevelopment
- Focus: Safety, precision engineering, stakeholder interface
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Perfect Contracting acknowledges the Aboriginal and Torres Strait Isander people as Traditional Custodians of the country on which we live and work. We pay our respects to the Traditional Custodians and Elders past, present and future, and honour their connection to the land and ongoing contribution to society.
