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Concrete Structure Crack Survey (ACI 224)
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Systematic crack mapping and characterization of concrete structures, classifying crack type, width, and cause with durability implications per ACI 224.
ACI 224.1RACI 201.1RASTM C856
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Survey Setup
- Structure / element ID *
- Date of survey *
- Element type (deck, girder, column, wall, foundation) *
- Is a crack map / grid reference established for documentation? *
Crack Characterization
- Are crack widths measured with a crack comparator or microscope? *
- Maximum measured crack width (inches)
- Are cracks classified by orientation (transverse, longitudinal, diagonal, map/pattern)? *
- Are cracks assessed as active (moving) vs. dormant?
Cause Assessment
- Is the likely cause identified (structural load, shrinkage, thermal, ASR, corrosion, settlement)? *
- Is there evidence of reinforcement corrosion (rust staining, delamination)? *
- Is efflorescence, leaching, or moisture migration present along cracks?
- Was petrographic sampling (ASTM C856) recommended for suspected ASR/DEF?
Severity & Actions
- Do any cracks exceed the tolerable width for the exposure condition? *
- Is the crack pattern indicative of a structural (versus durability) concern? *
- Is repair (epoxy injection, routing/sealing, overlay) recommended?
- Findings and recommended actions
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