Case Study: Mixed-Use Plaza Converts Ponding to Predictable Flow
Site: Neighborhood mixed-use plaza (retail + apartments) with frequent ponding along storefronts after moderate rain.
Challenge: Limited elevation fall (shallow grades) and a requirement for a discreet, pedestrian-safe drainage line that wouldn’t distract from premium stone pavers.
Solution: A 220-ft run of ACO K100 using pre-sloped and neutral channels to achieve a continuous slope section. Stainless edge rails were specified for corrosion resistance, and slotted stainless grates delivered a minimalist look while meeting Load Class C for service carts and occasional light-duty vehicles.
Outcome (first rainy season):
- >90% reduction in surface ponding at storefront thresholds.
- Faster maintenance: Boltless locking enabled single-person grate removal for quarterly cleanouts.
- Better aesthetics: Linear grate pattern aligned with paver joints, preserving design intent.