Under Eurocode 2, elements without shear reinforcement must satisfy:
Reinforcement detailing must comply with EN 1992-1-1 and EN 1992-2 requirements: box culvert design calculations eurocode 2021
| Exposure Class | Environment | Limiting Crack Width | |----------------|-------------|----------------------| | XC3/XC4 | Moderate humidity | 0.3 mm | | XD3/XD4 | Chloride attack (de-icing salts) | 0.2–0.3 mm | | XS1/XS2/XS3 | Sea water exposure | 0.2 mm | | XF4 | Freeze-thaw with de-icing | 0.2 mm | Under Eurocode 2, elements without shear reinforcement must
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is the depth of fill above the top slab. For deep burial depths, engineers apply soil-structure interaction arching factors according to local National Annex specifications. Hydrostatic Pressure ( Gk,wcap G sub k comma w end-sub