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Holistic Approach to Structural Damage Assessment and Repair Planning

Understand the cause, extent, and structural significance of damage to plan effective repairs. Consider client needs, risks, and long-term costs for sustainable solutions. Use advanced survey tools and classification codes for precise evaluation. Opt for durable repair methods to avoid future issues. Plan meticulously for lasting repairs.

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Holistic Approach to Structural Damage Assessment and Repair Planning

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  1. Information To Assess Right Way Forward • Cause of damage • Would you have surgery without seeing a physician to see what is wrong? • Extent of damage • Job blow out • Expands to become structural • Structural significance of damage • If it will not become unsafe or cause loss leave it • Likely future damage if left – two extremes • If it wont fail in design life leave it • A stich in time • Prognosis if repaired • Some repairs cause more problems than they solve • Life Cycle Cost – Cheap and repetitive vs once off and long life

  2. Client Interview • Ask questions • What does he want in terms of • Overall Life • Aesthetics • Operational interference • Safety • Budget (lowest cost now or long term) • Risk • Consequence of failure (Likelihood comes from survey) • History • Design, construction, operation and maintenance • Inform • Company policy on • Approach to assessment and repair • Liability involved • Risk minimalisation • Confirm in writing*

  3. Damage Assessment Repair Patch Injection CP Coating Environmental Control Damage Spalling Cracking Active Corrosion Future Activation Future Damage Survey Method Visual Visual Potential, Drummy Cl-, Carb, Cover Resistivity Polarisation

  4. Planning - the most cost effective survey tool • Split structure into environments • Prepare proformas based on • structural assessment • detailing & general arrangement • expected damage • environmental exposure • usage • Prepare inspection & testing plan • Adopt defect classification code

  5. Spray Zone Intermediate Zone Splash Zone Variable Pressure Hollow Leg High Pressure Hollow Leg

  6. Complex Simple Simplicity = Operability x Interpretability Low Use 1 6 25 Low Value 0.2 TP IEold GPRold LPR GPRnew IEnew/Crack Value = Applicability / Cost 1 High Value IEnew/Thick CR ISAT REP DRH RCMr High Use 5

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