Concrete replacement is considered where investigation and assessment identify structural members requiring local removal and replacement. The defect extent, member forces and overall structural condition must be established before selecting a feasible strengthening approach.
The company has documented engineering experience in staged shear-wall replacement, framed-column replacement and structural stress transfer. Temporary support and unloading, replacement sequence and load transfer between new and existing concrete are central to scheme assessment.
Different members and site conditions require different temporary-support and monitoring arrangements. The suitability of staged replacement, construction details and control criteria must be established by the project design and construction scheme.
What to establish before discussing a project
Describe the existing condition, the problem to be resolved, intended use and construction constraints. Drawings, investigation results and site information then inform the engineering approach. Scope, implementation conditions and deliverables are defined in the project agreement.
Information to prepare
- Original structural drawings and design changes
- Concrete strength tests and assessment reports
- Defect locations, extent and photographs
- Construction progress and operating loads
Project pathway
- Records review and confirmation of defect extent
- Structural analysis and replacement design
- Support, unloading and construction-stage control
- Staged work, monitoring and quality inspection