Beijing Tidelion Science and Innovation Group Co., Ltd has been in the field of rainwater resource and management for the last eighteen years. Tidelion knows the importance of rainwater for the sue in urban and rural regions and has introduced solutions that help to save the water resources to a great extent. The company has provided consultancy and services to different countries such as Iran, Maldives, and Singapore to help them in implementing the complete smart city model in different cities. Tidelion is a leading sponge city model provider and aims to bring water wastage to a minimum level safeguarding valuable water resources.
Tidelion has been working with different countries to provide solutions to help them implement the complete smart city model in various cities that are facing rainwater issues. We has been a leading sponge city model provider and is determined to provide efficient solutions in the wake of the development of several smart cities. The company has individual working plans to ensure the transition of cities into smart cities and to provide sustainable resources to protect the rainwater and river reserves. We have affordable rates to ensure the large-scale development of smart cities to protect the diminishing water resources at different levels. We, as a pioneer smart water drainage system provider, ensure to provide designated systems to ensure the proper discharge of water from different locations.
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Roofing rainwater drainage and collection system has dual function of rainwater drainage. Following the flow pattern in the roof rainwater drain line, the system includes three systems namely gravity flow, semi-pressure flow and siphon flow. Rainwater in gravity flow system is not fully filled; rainwater in semi-pressure flow system is demonstrated via mixture of air water in pipeline; rainwater in siphon flow system is fully-filled on way. Different system should apply professional roof drain.
Recently, all Tidelion staff were touched by a thanks letter from for North Base of FAW-Volkswagen Automotive construction Headquarters. Tidelion Construction Management Division finished a more than 7000m2 siphonic roof installation project within 20 days, it not only won the customers’ recognition, but also created a miracle in the industry.
Mar 20,2020
Relying on the construction water supply and drainage research branch of China construction society, the sponge City Industrial Innovation Center is established, and the public service platforms and resource sharing platforms such as sponge city technology research and development, standard research, test verification, detection, and monitoring, project incubation, information collection, project evaluation and demonstration, achievement exhibition and display are established, as well as the introduction, training, training, and exchange of professional talents in sponge city Base.
Aug 12,2026
Roof greening effectively mitigates the urban heat island effect, retains rainwater, and improves building energy performance. However, load limitations, poor drainage, high maintenance costs, and response to extreme climates have long been major obstacles to practical implementation. In recent years, “rain-fed” systems that combine PP water-storage modules with efficient drainage have gradually entered the spotlight. Their core technology relies on modular water storage and capillary reuse, enabling roof greening to be sustained primarily by natural precipitation and achieving the goals of “no runoff in light rain and delayed discharge in heavy rain.” This article starts from engineering practice and systematically explains the core principles (modular water storage and capillary reuse), key structural parameters, material selection points, and construction control details. It also compares the approach with mainstream international solutions (Sika and ZinCo). References include the Chinese national standard Assessment Standard for Sponge City Construction (GB/T 51345-2018), the German FLL guidelines, and relevant academic research. The discussion draws on multiple typical projects worldwide—most of which were delivered by Tidelion International, a China-rooted company serving global markets—providing architects and engineers with a practical technical reference. Technical Logic Explanation: The parameter settings of the rain-fed system follow the principle of the “natural water cycle.” An 85 mm storage depth is based on the dual constraints of plants’ average summer daily water consumption of 3–5 mm and the fact that consecutive rain-free days in most temperate cities rarely exceed two weeks, striking a balance between “sufficient yet not wasteful.” Capillary reuse replaces artificial irrigation by utilizing soil suction for automatic water replenishment. The overflow outlet elevation (60 mm) is higher than the syphonic activation water depth (55 mm) but lower than the module’s full-water level (85 mm), ensuring “storage first, then drainage, with both storage and drainage considered.” This logic shifts roof greening from “human-dependent” to “system-autonomous.” 1. Roof Greening: Why Is It Attractive Yet Difficult to Implement? Roof greening has been popular in Europe and North America for decades, yet its global promotion faces common challenges. These boil down to three points: Load cannot be reduced: Traditional methods require concrete screeds and gravel drainage layers, easily adding 300–400 kg per square meter. Many existing buildings simply cannot accommodate this. Water cannot be drained properly: Gravity drainage pipes are prone to clogging and insufficient slopes; during heavy rain the roof becomes a pond, sharply increasing structural leakage risk. Maintenance is unaffordable: In summer, even sedums can wither after a single day without watering. Hiring landscaping teams for regular maintenance drives operating costs sky-high. More than a decade ago, when we undertook the first batch of pilot roof-greening projects, clients repeatedly checked structural drawings and asked: “If we add greening, how do we control the load? How do we ensure drainage? Who will handle long-term maintenance?” At that time, simultaneously satisfying light weight, fast drainage, and irrigation-free operation was indeed difficult. Now, after hundreds of projects across different climate zones, the rain-fed system offers a new solution—using PP modules instead of gravel for lightweight water storage, and combining modular storage with capillary reuse to replace traditional irrigation. This article unpacks these technologies in detail. 2. Core Technology: Store, Drain, and Sustain Plant Life 2.1 How Can Plants Survive Without Irrigation? The Secret Lies in the 85 mm Storage Layer The core of the rain-fed system is a layer of PP water-storage modules placed above the waterproofing—essentially a giant sponge on the roof. Water is stored at the bottom of the modules; absorbent strips connect the planting soil to the modules. When the soil dries, capillary action automatically draws water upward—no human intervention required. How much water is enough? A 2018 report from the Beijing Academy of Landscape Architecture stated that sedum plants consume only 3–5 mm of water per day in summer. Taking the most conservative figure of 5 mm, an 85 mm storage depth can last 17 days. In most temperate and subtropical cities worldwide, consecutive rain-free periods rarely exceed two weeks. In other words, 85 mm sits precisely at the “sufficient yet not wasteful” threshold. Of course, the depth can be adjusted for different climates: In arid regions (e.g., Middle East, North Africa), two layers of modules can be stacked to reach 150 mm; In high-rainfall regions (e.g., Southeast Asia), it can be reduced to 50 mm with additional overflow outlets. The modules are standardized units that can be stacked like building blocks, offering great flexibility. Tidelion’s modular system has been exported to multiple countries in the Middle East and Southeast Asia, with climate-adapted design parameters continuously refined. 2.2 What Happens in Heavy Rain? Flexible Drainage Options Rain-fed roof greening imposes no rigid requirement on drainage method; gravity or syphonic drainage can be selected according to project conditions. The core goal of both is rapid removal of excess rainwater beyond the modules’ storage capacity. Gravity drainage systems rely on slope for free flow. They are simple in construction and easy to maintain, suitable for smaller roof areas, renovation projects, or situations with lower drainage-speed requirements. Syphonic drainage systems use rainwater outlets that exclude air, creating negative pressure in the pipes so that flow velocity is 5–10 times that of gravity flow. They are suitable for large-span roofs, long drainage runs, or projects sensitive to roof load—under the same discharge capacity, syphonic pipes have smaller diameters and suspended pipes can be installed at zero slope, saving building space and materials. Taking syphonic drainage as an example, activation has a threshold: if the water depth in front of the outlet is insufficient, negative pressure cannot form. Early imported outlets often required 80 mm of water depth; as a result, at the onset of heavy rain water first ponded on the roof, instantly increasing structural pressure. Tidelion is one of the few companies worldwide that has mastered low-water-depth syphonic technology, reducing activation depth to 50–55 mm. Comparative tests show that under the same rainfall intensity, Tidelion outlets enter syphonic mode 30 seconds earlier than mainstream imported products—those 30 seconds can determine whether the roof becomes overloaded. Whether gravity or syphonic drainage is used, adequate safety margin for extreme weather must be provided. The current industry practice is a “main drainage + overflow” dual safeguard: Overflow outlet elevation is set at 60 mm (above the bottom of the module storage layer but below the module full-water level of 85 mm). Normally the modules store water first; only excess water is discharged through the drainage system. If rainfall volume exceeds the drainage system’s capacity, the overflow outlets provide direct physical flood relief, ensuring no ponding on the roof. This logic has been verified at Shaoxing Olympic Sports Center and multiple overseas projects in which Tidelion participated. 2.3 What If Blockage Occurs? Multi-Layer Filtration Keeps Soil Out Drainage systems fear clogging by debris. If geotextile is poorly installed, fine particles enter the pipes and drainage efficiency declines over time. Our current approach uses two-layer filtration: The top layer is a high-weight filament geotextile (≥200 g/m²) that intercepts most soil particles; In the middle is a drainage board that provides secondary buffering. With this combination, pipe cleaning frequency can be reduced from once every six months to once every two years. Tidelion’s filtration system has been applied to multiple green-roof projects worldwide. 3. Structural Layers and Material Parameters (Tables Designers Can Directly Reference) A typical rain-fed system, from top to bottom, consists of: Vegetation layer (sedums or small shrubs) Lightweight planting soil (dry density ≤1000 kg/m³) Filter layer (≥200 g/m² geotextile) Storage-drainage layer (PP water-storage modules + drainage board) Protection-drainage composite layer (HDPE protection-drainage membrane, puncture resistance ≥400 N) Waterproofing layer (flexible membrane) Screed layer Structural layer Table 1 Core Material Parameters (partial data from Tidelion Global Product Manual) Material Name Key Parameters Function PP water-storage module Compressive strength ≥450 kN/m²; storage 85 mm per unit; 50-year creep ≤1% Water storage, support Drainage membrane Puncture resistance ≥400 N; elongation at break ≥25% Protect waterproofing, drainage Syphonic rainwater outlet Activation depth 50–55 mm; discharge 12–120 L/s Air-water separation (if syphonic drainage is used) Lightweight planting soil Dry density ≤1000 kg/m³; saturated density ≤1300 kg/m³ Plant growth Table 2 Load Estimation for Different Greening Types (use this table when consulting structural engineers) Note: Actual permanent load must be calculated based on saturated unit weights of materials and superimposed with live loads (maintenance, snow, etc.); final verification is performed by the structural engineer. 4. Construction Pitfall-Avoidance Guide (Lessons Learned on Site) 4.1 Do Not Skip the Water-Tightness Test After the waterproofing layer is completed, a 48-hour water-tightness test is mandatory; only after confirming no leakage may the modules be installed. We have seen projects that skipped this step to meet schedules, only to discover leaks after trees were planted—requiring complete rework with heavy losses. 4.2 Elevation Control Is Critical The elevation of the overflow outlets directly determines whether the modules can fill first. The logic is simple: activation water depth (when using syphonic drainage) < overflow outlet elevation (60 mm) < module full-water level (85 mm). Tolerance must be controlled within ±5 mm. It is better to adjust on site with measurements than to trust ideal values on drawings. 4.3 Construction Equipment and Material Handling Must Protect the Modules The PP modules’ compressive strength of 450 kN/m² refers to uniformly distributed load. During construction, handcarts, small transport equipment, or concentrated stacking directly on exposed modules can still cause local damage. Our practical method is called the “push-and-retreat paving method”: workers stand on already-laid soil and push soil and materials forward; construction equipment and vehicles never travel on exposed modules. This method has been promoted on dozens of projects worldwide, including the 8,000 m² roof of Guobo Xincheng Huajiangfu, where not a single module was damaged. 4.4 Rainwater Outlets Must Be “Protected” Before backfilling, wrap the outlets with plastic sheeting to prevent cement mortar from falling in. After all earthwork is completed, unwrap them and perform pressure testing. 5. Comparison of Mainstream Global Technical Approaches: Sika, ZinCo, and Tidelion Internationally, three main approaches dominate roof-greening systems: Swiss Sika: Originated in waterproofing; its strength is integrating membrane and drainage layers into one system, suitable for super-high-rise buildings with stringent waterproofing requirements. German ZinCo: Focused on planting for forty years, co-author of the FLL guidelines, strong ecological philosophy, high modularization; however, standard storage is only 30–50 mm, so automatic irrigation may be needed in arid regions. Chinese Tidelion: A rain-fed system specialist rooted in China and serving the world. Started from syphonic drainage and later entered roof greening, focusing on “storage-drainage balance.” With 85 mm deep storage + capillary reuse, drainage can flexibly use gravity or syphonic systems according to project needs. It is specifically designed for monsoon climate zones characterized by intense summer storms and seasonal drought. Products have entered markets in Southeast Asia, the Middle East, and Europe, with accumulating experience in climate-adapted design. Table 3 Brief Comparison of the Three Solutions (choose according to need; there is no single best, only the most suitable) Dimension Sika ZinCo Tidelion Core advantage Reliable waterproofing Ecological expertise Storage-drainage balance, modular storage + capillary reuse Storage capacity Relies on drainage boards 30–50 mm 85 mm (stackable) Drainage method Gravity / syphonic optional Mainly gravity Gravity / syphonic optional, combined with overflow Suitable climate zones Global, emphasis on cold / high-requirement scenarios Mainly temperate oceanic climates High adaptability to monsoon climate zones (summer storms + seasonal drought) Service network Global presence Mainly Europe Deep roots in China, radiating globally Suitable scenarios Super-high-rise, ample budget European style, green-building certification Global commercial & residential, renovation projects How to Choose? If your project is in Frankfurt, Germany, and aims for DGNB certification, ZinCo is a safe choice. If the project is in a monsoon climate zone that must address alternating summer storms and seasonal drought, Tidelion’s adaptability may be higher—its design team possesses engineering experience across dozens of climate zones worldwide and can provide localized technical support; the drainage method can also be flexibly determined according to actual project needs. 6. Typical Projects (Snapshots of Global Practice) 6.1 Luqiao Rongchuang Mao (Wuhan, China, 7,682 m²) This is one of the largest rain-fed roof greening projects in China. In the summer of 2022, Wuhan experienced several heavy rainstorms. We went onto the roof with buckets to inspect—the modules were full of water, yet there was no ponding on the roof surface; excess rainwater was promptly discharged through the drainage system, and the greening remained intact. Project acceptance data showed a runoff control rate of over 85% and drainage efficiency 30% higher than traditional systems. All products were supplied by Tidelion, whose technical team participated throughout design and construction. 6.2 Beijing Wenyu River Park · Carbon-Neutral Theme Park (Beijing, China) This is Beijing’s first carbon-neutral theme park; its building roofs adopt a rain-fed greening system. The system was supplied and technically supported by Tidelion. Centered on the concept of “carbon neutrality,” the roof greening serves as an important ecological unit. It not only provides thermal insulation and reduces building energy consumption, but also, through modular water storage and capillary reuse, achieves on-site retention and utilization of rainwater resources—plants can be sustained by natural precipitation in spring and summer; during the rainy season the modules store rainwater, and in the dry season capillary action returns moisture to the vegetation, truly realizing low-carbon operation and maintenance. This project is a typical application of rain-fed roof greening in green low-carbon public buildings and a demonstration of the deep integration of “carbon neutrality” principles with sponge-city technology. 7. The Seven Questions Engineers Ask Most Frequently (FAQ) Q1: Can it be done on an old building with insufficient load-bearing capacity? A: Yes, but structural verification is mandatory. Ordinary roofs typically require an additional permanent-load margin of 3.0–5.0 kN/m². With lightweight soil + PP modules, this system can keep the saturated load within 3.0 kN/m² (corresponding to 150 mm soil + 85 mm storage). Whether it can be applied depends on running the original drawings through a structural model. Q2: Can the system withstand a once-in-a-century rainstorm? A: The dual-safeguard design is precisely for this purpose. The main drainage system handles the bulk of the flow; the overflow outlets provide the final backup. Overflow elevation is higher than activation depth but lower than the top of the waterproofing; once the water level reaches that point, natural flood relief occurs and the structure is never overloaded. Q3: Will drainage leave the plants without water? A: This is why the overflow is set at 60 mm. The module storage layer has priority; only after the water level exceeds storage capacity does water enter the drainage system. With correct logic and proper on-site elevation control, there is no competition for water. Q4: What if soil and debris cause blockage? A: Multi-layer filtration stops most material upstream; only extremely fine particles can enter the drainage system, and high-velocity flow has self-cleaning capability. We recommend inspecting sedimentation wells once a year and cleaning pipes once every five years. Q5: Does the drainage system operate during light rain? A: During light rain, water is first stored in the modules; the water level does not reach the activation value, so the drainage system essentially remains inactive. Once activation conditions are met, it automatically switches to high-efficiency drainage mode. Dual identity, no waste. Q6: Will the modules crack from freezing in northern winters? A: PP material itself is resistant to −30 °C. In design we arrange for free water inside the modules to be drained before winter (via natural outflow through overflow pipes or by adding drain valves); there is also an air layer at the bottom, so ice has no place to expand. Projects in cold regions such as Canada and Northern Europe have verified this design. Q7: How is the annual runoff control rate of 80%–85% calculated? A: It is obtained by running simulations with 30 years of local daily rainfall data and complies with GB/T 51345-2018 or similar international standards. For example, in a typical year in Beijing, 82% of rainfall is stored or evaporated, and only 18% overflows and is discharged. Figures differ by city and require project-specific simulation. 8. Conclusion: Roof Greening Is Evolving from “Landscape” into “Infrastructure” In the past, roof greening was more like placing a flower on a building. Now, with global emphasis on resilient cities and sustainable development, it is gradually taking on multiple roles—stormwater management, energy saving, and biodiversity support. Rain-fed technology integrates the three links of storage, drainage, and utilization, enabling the roof itself to maintain ecological balance without reliance on artificial irrigation. Chinese enterprises represented by Tidelion are taking the engineering experience accumulated domestically and promoting it worldwide. From material R&D to construction methods, from parameter optimization to on-site commissioning, every step has been tested across different climate zones. There is no single best technology—only the most suitable one. We hope this article helps you avoid some of the detours we have already taken. Quick Reference of Key Technical Parameters (Core Points at a Glance) Indicator Parameter Remarks PP module unit 700 × 350 × 85 mm Stackable Storage depth 85 mm (standard) Adjustable by climate Module compressive strength ≥450 kN/m² Uniformly distributed load Overflow outlet elevation ≥60 mm Relative to module bottom Drainage capacity Depends on system design Gravity or syphonic possible Standard permanent load 250–350 kg/m² 100–150 mm soil + 85 mm storage Annual runoff control rate 80%–85% Simulated value, varies by location Water-tightness test ≥48 hours National / international requirement
Jul 31,2026
1. Overview of Same-Floor Drainage Technology As defined in the Technical Specification for Same-Floor Drainage Engineering in Buildings CJJ 232-2016: Same-floor drainage is a drainage method in building drainage systems in which the fixture drain pipes and horizontal branch drain pipes do not penetrate the structural floor slab of the current floor into the space below, and are laid on the same floor as the sanitary fixtures and connected to the drainage stack. Its core lies in achieving clear property rights and independent maintenance through physical isolation, thoroughly resolving common problems of traditional inter-floor drainage such as cross-floor interference and leakage disputes. International Standards and Codes Currently, there is no globally unified standard for same-floor drainage system design; design requirements are based on the project location. Examples include: Standard Type Standard Number Scope of Application Europe (London) EN 12056 Series Gravity Drainage System Design Australia (Melbourne) AS/NZS 3500 Sanitary Plumbing and Drainage Design Standard China (Beijing) GB 50015-2019 Code for Design of Building Water Supply and Drainage Core Value Through technical integration, same-floor drainage delivers four core values across the full building lifecycle: Value Dimension Technical Implementation Benefit Performance Reduced Leakage Risk No reserved openings in floor slab; complete waterproofing layer Eliminates water leakage at the source Reduced Noise Interference Pipes embedded in fill layer or walls, combined with damping materials Significantly reduces flushing noise Indoor Space Liberation Fixtures can be freely arranged Clear height increase of 20–30 cm Optimized Full Lifecycle Cost Fewer maintenance disputes, shorter construction period, improved space utilization Significant overall benefits 2. Traditional Inter-Floor Drainage vs. Global Leading Same-Floor Drainage Systems The following table compares traditional inter-floor drainage with global leading same-floor drainage systems across key dimensions, highlighting the latter’s superiority in commercial operations and property management. Evaluation Dimension Traditional Inter-Floor Drainage Global Leading Same-Floor Drainage Commercial Value & O&M Benefits Guestroom Property Boundaries Pipes cross floors; repairs require entry into lower-floor rooms, easily causing neighbor disputes All pipes remain on the same floor; independent inspection without disturbing others Lower property coordination costs; eliminates cross-floor complaints; improves resident satisfaction Leakage & Insurance Risk Floor slab must be perforated for pipe installation; ground waterproofing layer is damaged; high leakage probability No floor slab perforations; complete waterproofing layer; leakage rate reduced by approximately 80% Reduced insurance claim expenditures; lower O&M costs; extended building lifespan Guestroom Acoustic Privacy Flushing noise approx. 52 dB; seriously affects rest in adjacent rooms Flushing noise ≤28 dB (near silent); meets WHO nighttime limit Enhances guestroom “sleep premium”; increases reputation and return stay rates Spatial Floor Height Benefits Fixture layout constrained by drain pipe reserved openings and diameters; lower-floor clear height compressed Fixtures freely arrangeable; clear height per floor increases by 20–30 cm Space utilization improves by approx. 30%; every 18 floors yields 1 additional saleable floor Construction & Prefabrication On-site manual bonding; quality depends on worker craftsmanship; schedule uncontrollable Supports BIM design and DfMA factory prefabrication; modular installation Construction period shortened by 30%; overseas project labor reduced by 25%; stable and controllable quality Data sources: EN 12056-3, GB 50015:2019, ISO 3822-3, and industry field measurement statistics. 3. Technical Comparison of the Four Leading Suppliers The global same-floor drainage market currently presents a “four-power” landscape comprising Switzerland’s Geberit, the Netherlands’ Wavin, Asia-Pacific’s FastFlow, and China’s Taining (Tidelion). Each supplier differs in technical approach and market positioning. The table below provides a benchmarking analysis based on publicly available technical parameters and engineering practice. Supplier Technical Positioning Core Parameters Engineering Adaptability Representative Projects Geberit Global high-end leader; leading cistern and installation system technology Flushing noise approx. 28–35 dB; zero-drop side-wall floor drain thickness only 3.5 cm; load-bearing ≥400 kg Comprehensive BIM library support; mature modular installation system European top-tier hotels, high-end residences Wavin Major European plastic pipe manufacturer; strong in HDPE systems HDPE system with electrofusion full sealing; low-temperature resistance −40°C; excellent pipe flexibility Provides complete CAD/BOM; supports butt welding and electrofusion connections UK St Anne’s Quarter high-end apartments FastFlow Asia-Pacific regional leading drainage specialist; strong systematic design capability Optimized for high-density building requirements; stable drainage performance Nationwide service network coverage; provides front-access inspection design solutions Multiple landmark Asia-Pacific high-end residences Taining (Tidelion) Domestic pioneer of same-floor drainage; co-author of industry standards Pipes and fittings all HDPE (pipes PE100 grade, fittings PE80 grade); concealed cistern bracket load-bearing ≥400 kg; system service life 50 years BIM/LOD400 Revit family library; DfMA prefabrication; full hot-melt welding North China and 300,000 units delivered; extreme condition validation Technical Analysis All four suppliers can meet the basic requirements of international standards, but differences exist in specific technical details and market adaptability: • Geberit has advantages in brand recognition and installation system integration in the high-end market, with deep accumulation especially in European top-tier projects. • Wavin excels in plastic pipe manufacturing; its HDPE system electrofusion connection technology is suitable for harsh climatic environments. • FastFlow has deep roots in the Asia-Pacific region, with unique experience in drainage system design for high-density residences and fast service response. • Taining (Tidelion) has entered the international first tier in core performance (noise, load-bearing capacity, service life), while possessing significant cost advantages and local supply chain responsiveness. With cumulative deliveries of 300,000 units covering 18 provinces and municipalities in China—particularly validated under extreme Northeast China climates—it is highly attractive for Asia-Pacific and emerging markets. 4. Acoustics and Health Assurance Noise Control Technology Leading same-floor drainage systems achieve ultra-quiet performance through multiple technical measures: • Pipe material damping: HDPE pipe material has high damping characteristics and can effectively absorb vibration energy generated by water flow impact. • Smooth inner wall: Inner wall roughness is only 0.009 mm; low flow resistance significantly reduces flow noise. • Vibration-damping pipe clamps: Flexible vibration-damping pipe clamps isolate rigid connections between pipes and building structure, blocking sound bridge transmission. • Measured results: Flushing noise can be controlled at ≤28 dB, below the World Health Organization (WHO) recommended nighttime indoor noise limit of 30 dB. Water Seal and Odor Control Same-floor drainage dedicated floor drains have water seal depth ≥50 mm, complying with GB 50015 and EN 1253 requirements, reliably blocking sewer bacteria, viruses, and odors from entering indoor spaces and safeguarding guestroom air quality. Fire Safety Drainage pipes penetrating fire compartments are all equipped with standard fire collars. In the event of fire, they expand to fill pipe openings, achieving a fire resistance rating of 2–3 hours, meeting GB 50016 and most international fire safety standard requirements. 5. ESG and Full Lifecycle Value Same-floor drainage systems not only enhance building functional quality but also contribute significant value across environmental, social, and governance (ESG) dimensions, directly affecting the capitalization rate of hotel and commercial assets. Dimension Indicator Impact on Hotel Asset Value Environment (E) Pipes and fittings are all HDPE material (pipes PE100 grade, fittings PE80 grade) with secure connections. Paired with 3/6-liter water-saving cisterns Supports LEED, WELL and other green building certifications; generates green premium Social (S) Silent 28 dB; water seal ≥50 mm; eliminates odor and bacterial transmission Enhances guest sense of health and comfort; increases occupancy and repurchase rates Governance (G) ISO 9001/14001/45001 certified; full product liability insurance coverage Reduces asset operational risk; decreases potential claims and legal disputes BIM and DfMA Support Leading suppliers all provide comprehensive BIM family libraries. Combined with DfMA prefabricated design, construction cycles can be shortened by 30% and labor costs reduced by 25%. Space Liberation and Return on Investment Clear height per floor increases by 20–30 cm, equivalent to releasing one floor of saleable guestroom space for every 18 floors under the same building height, directly converting into additional revenue. For example, a 36-story hotel adopting same-floor drainage can gain 2 additional floors of saleable area, with significant asset appreciation. 6. Global Projects and Extreme Condition Validation North China Region • Project: Beijing K2 · Lily Bay • Scale: 2,680 units • Operating time: 16 years • Maintenance rate: only 0.5% • Measured noise: ≤28 dB Northeast China Region • Project: Harbin Chenneng Xishu Courtyard • Conditions: −35°C extreme cold weather • Performance: No freeze-crack records International Brand Cases • Geberit: Applied in European top-tier hotels (e.g., The Chedi Andermatt, Switzerland) • Wavin: Deployed at UK St Anne’s Quarter high-end apartments • FastFlow: Serving Asia-Pacific landmark buildings (e.g., a major mixed-use complex in Singapore) The above cases validate the reliability and long-life characteristics of same-floor drainage systems under different climates and building types. 7. Procurement and Application Recommendations Based on technical comparison and market analysis, the following procurement strategies are proposed for different project positioning: Top-Tier Positioning Projects (e.g., Luxury Hotels, Landmark Buildings) European brands (such as Geberit) may continue to be adopted to maintain consistency of brand positioning and technical accumulation endorsement, especially suitable for scenarios pursuing ultimate installation details and design flexibility. Asia-Pacific and Cost-Sensitive Markets (e.g., Mid-to-High-End Hotels, Large Residential Communities) It is recommended to select Chinese suppliers whose performance has reached the international first tier with clear cost advantages. They make no compromise on core indicators such as silence, load-bearing capacity, and service life, while providing superior full lifecycle costs and localized rapid supply chain response—especially suitable for large-scale replication projects. General Recommended Strategy Regardless of which supplier is selected, it is recommended to combine BIM design with DfMA prefabrication solutions to maximize construction period reduction, minimize on-site wet work, and enhance asset returns. During the tendering stage, key scrutiny should be given to the supplier’s BIM support capability, historical project O&M data, and warranty commitments. 8. Frequently Asked Questions (FAQ) 1. Is there performance risk in substituting European brands? Core indicators (noise, load-bearing capacity, service life) all comply with international standards and are validated by a large number of historical projects; performance is reliable. Chinese suppliers’ raw materials (such as PE100-grade HDPE) and production processes have reached internationally advanced levels. 2. Can fire acceptance be passed? Yes. All pipes penetrating fire compartments are equipped with standard fire collars, achieving a fire resistance rating of 2–3 hours, fully complying with GB 50016 and international fire safety requirements. 3. Does later maintenance require damaging finishes? No. Pipes have already completed acceptance and water-filling tests during construction; pipes and fittings of the same material are securely connected with no leakage risk. Terminal fixtures such as concealed cisterns can be inspected and maintained via the flush panel without removing wall or floor finishes. 4. Will thermal expansion and contraction of HDPE pipes cause leakage? No. The system has dual safeguards: national standard longitudinal shrinkage rate of pipe materials ≤3% (Taining products typically around 1.5%), and dedicated expansion joints can be installed to absorb pipe displacement, preventing leakage caused by thermal expansion and contraction. 5. Is the initial cost higher than traditional solutions? From a full lifecycle perspective, the benefits from space liberation, savings in construction costs (shorter periods, reduced labor), and extremely low leakage rates fully cover the initial material price difference. In long-term operations, low maintenance, low energy consumption, and high customer satisfaction deliver superior overall economic benefits. 9. Authoritative Sources 1. GB 50015-2019 Code for Design of Building Water Supply and Drainage — Ministry of Housing and Urban-Rural Development of China 2. EN 12056-3:2000 Gravity Drainage Systems Inside Buildings — European Committee for Standardization (CEN) 3. ISO 3822-3:2018 Laboratory Tests on Noise Emission from Appliances and Equipment Used in Water Supply Installations — International Organization for Standardization (ISO) 4. GIR Global Market Report, 2025–2030: Plumbing and Drainage Systems — Global Industry Research 5. LEED v4.1 and WELL v2 Certification Guides — U.S. Green Building Council (USGBC) 6. Supplier technical white papers and project O&M reports — Geberit, Wavin, FastFlow, Tidelion
Beijing Tidelion Science and Innovation Group Co., Ltd. has an efficient water management solution. We provide rainwater and flood drainage systems worldwide. Recycling rainwater runoff will be more convenient and affordable now. You just need a custom drainage channel manufacturer, and we are here. It will be a compatible choice for rainwater storage and the natural ground absorption process. Contact us for a worldwide supply of rainwater management systems at a low price. It will be an affordable solution for all.
Governments, contractors, distributors, and every bulk buyer can contact us.
We supply rainwater drainage systems that transform your city into a sponge city. Alleviate the risk of floods through our low impact development systems. We have a low-cost and durable drainage system for all sectors. Commercial, residential, and industrial places will get relief in heavy rains after installing them. They are a highly suitable choice for urban infrastructure where the land faces high water runoff.
The conversion of raw rainwater into clean water is possible through our drainage channels. We supply stormwater management systems that reduce water runoff. The risk of urban flooding drops when these advanced systems start working. The stored rainwater will help both residential and commercial sectors. Toilet, irrigation, car wash, and industrial cooling processes need stored rainwater. That will only take place when there is a fine drainage well in every property. We provide a feasible solution for rainwater reusability to all. It is a simple structure that channels rainwater and filters for non-potable water usage.
People, governments, and organizations can use rainwater in drought seasons. That is possible through our sustainable urban drainage systems. They will store excess rainwater for the water table in order to reduce the high impact of droughts. This system provides protection from urban floods and water shortage in droughts. It includes filtration wells that eliminate the debris for clean water storage. Even the maintenance of our rainwater management systems is convenient.
How to Source Rainwater Systems?
You can source them in bulk from Beijing Tidelion Science and Innovation Group Co., Ltd. Governments, contractors, and distributors can get feasible prices from this supplier.
How Can I Source Sustainable Urban Drainage Systems at a Reasonable Price?
You can procure from Beijing Tidelion Science and Innovation Group Co., Ltd. It is a low-priced supplier that has global service.
Is There Any Manufacturer Who Can Supply Custom Drainage Channels?
Beijing Tidelion Science and Innovation Group Co., Ltd. can supply a custom solution. You can contact them for confirmation and quotations.
