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Tolerable crack widths for exposure conditions of ACI 224R-90 [43].
| Exposure Condition | Tolerable Crack Width (mm) |
|---|---|
| Dry air protective membrane | <0.40 |
| Humidity, moist air, soil | <0.30 |
| Deicing chemicals | <0.18 |
| Seawater and seawater spray; Wetting and drying | <0.15 |
| Water retaining structures | <0.10 |
