[Decoration Expert] How is same-floor drainage implemented in hotel bathrooms?

[Decoration Expert] How is same-floor drainage implemented in hotel bathrooms?

Recommend HDPE acoustic drainage pipes + drop-down same-floor drainage. The recessed slab depth is typically 300-350 mm; after backfilling, the finished floor level should be 20-30 mm lower than the living room. Horizontal pipe gradients shall comply with the code, and the decorative floor drain must align with the tile joints.