30 October 2025 - If you're in the precast concrete industry, you know how critical watertightness is for underground structures like box culverts, pipes, and tanks. Leaks can lead to corrosion, freeze-thaw damage, and long-term structural issues. But here’s the good news: you can achieve watertight precast elements using Steel Fiber Reinforced Concrete (SFRC) — and validate it with a simplified serviceability design approach.