Laboratory test data from the University of the Philippines+engineering cases from Vietnam/Malaysia
1、 Analysis of Southeast Asian Climate Challenges and Roof Failure Cases
1. Tropical storm destructive power data (updated in 2023)
According to the report from the Asian Typhoon Monitoring Center (ATMC), Southeast Asia experiences an average of 22 typhoons with a magnitude of ≥ 12 per year, with the coastal areas of the Philippines and Vietnam being the most severely affected. The key data is as follows:
–Wind speed threat:
-The maximum sustained wind speed of Typhoon Sura in the Philippines in 2023 is 240km/h (level 17), with gusts of 285km/h
-Traditional color steel tiles have a displacement rate greater than 30mm/m ² at a wind speed of 150km/h, resulting in seam tearing
-The probability of a wooden roof collapsing in a 12 level wind is as high as 78% (data source: Vietnam Institute of Building Safety)
– rainstorm threat :
-Penang, Malaysia recorded the highest daily rainfall of 516mm (2022), causing 75% of the city’s roofs to leak
-The average annual rainy season precipitation in Bangkok, Thailand is 1500mm, and the water absorption rate of traditional asphalt shingles is over 40%, which leads to the growth of mold
–Corrosion threat:
-Salt spray deposition in coastal areas>1.5mg/m ²/day (ISO 9223 CX level)
-The corrosion perforation rate of ordinary galvanized steel sheet within 3 years is greater than 60%, and the maintenance cost can reach up to $45/m ²
2. Typical Failure Case Warning (with added in-depth analysis)
Case 1: Vietnam Danang Seaside Hotel Project
–Project Background: Built in 2019, using 0.3mm galvanized steel tiles, with a total roof area of 12000m ²
– Problem outbreak : -Typhoon “Kangsen” passed through in 2021 (level 14), causing 25% of tiles to be overturned and fragments to shatter glass curtain walls -Salt spray corrosion causes perforation of roof panels, with an average daily leakage of 3.2 tons during the rainy season
– Repair cost:
-Direct loss: $380000 (tile replacement+structural reinforcement)
-Indirect losses: Compensation of $1.2 million for business closure, damage to brand reputation
Case 2: Traditional Residential Areas in Penang, Malaysia
–Accident reduction : In the rainstorm season of 2022, the ceramic tile absorbed water and gained weight to 82kg/m ² (dry state 48kg/m ²)
– Structural failure : The maximum load-bearing capacity of the wooden truss is 65kg/m ², causing roof collapse and resulting in 2 deaths
– Regulatory impact : Penang state government issues new regulations in 2023: roof materials with a water absorption rate greater than 15% are prohibited in typhoon prone areas
2、 Analysis of core technology for typhoon resistant stone coated metal tiles (with added process details)
1. Military grade aluminum zinc coated steel plate substrate
1.1 Comparison of Material Parameters
| Indicator | Our product (SKW-G550) | Traditional galvanized sheet (DX51D) | Improvement range |
|---|---|---|---|
| Substrate thickness | 0.45mm ± 0.02 | 0.3mm ± 0.05 | +50% |
| Coating weight | 150g/m ² | 60g/m ² | +150% |
| Salt spray corrosion resistance time | ≥ 5000 hours | ≤ 1000 hours | +400% |
| Yield strength | 550MPa | 280MPa | +96% |
| Vickers hardness | 180HV | 120HV | +50% |
1.2 Precision Manufacturing Process
–Hot dip coating control:
-Accurate control of zinc aluminum melt pool temperature: 557 ℃± 2 ℃ (to avoid alloy composition segregation)
-Air knife pressure: 0.15MPa (coating thickness error ≤± 3g/m ²)
–Nano silicification treatment:
-Generate a 5-8 μ m thick SiOx dense layer on the surface of the steel plate (see Appendix 1 for electron microscopy image)
-Improved acid and alkali resistance: Corrosion rate ≤ 0.02mm/year in pH 1-13 environment
2. Innovation in typhoon resistant structures
2.1 Biomimetic Shark Skin Ripple Design
–Fluid dynamics optimization:
-Ripple depth of 8mm, wavelength of 120mm, verified by CFD simulation to reduce wind resistance coefficient by 23%
-Design of diversion channel accelerates rainwater discharge and reduces wind pressure accumulation
–Patent Lock Lock System ：
-Horizontal tensile strength ≥ 12kN/m (ASTM D1761 standard)
-Vertical pull-out force ≥ 2.5kN/m ² (simulating the lifting force of a typhoon)
2.2 Complete Record of Extreme Environment Testing
**Record of Wind Tunnel Laboratory Testing at the University of the Philippines * :
– Testing conditions : -Wind speed range: 60-240km/h (simulating typhoons of 12-17 levels) -Turbulence intensity: IEC 61400-1 Class S (Extreme Turbulence) –
Key Data :
-The displacement at a wind speed of 240km/h is only 1.7mm/m ² (safety threshold<5mm/m ²)
-After 3 hours of continuous impact from a Category 17 typhoon, the locking system maintains zero failure
Rainstorm scouring test :
– Simulation scenario : 150 mm/h rainfall (equivalent to the 100 year rainstorm in Malaysia)
– Drainage performance :
-Drainage volume ≥ 8.5L/m, evacuate 200m ² roof within 20 minutes
-Anti backflow eaves design to prevent strong winds from driving rainwater to flow back
3、 Comparison of Southeast Asian Engineering Cases and Economic Benefits (New User Witness)
1. Sunrise Commercial Complex in Ho Chi Minh City, Vietnam
– Project Background :
-Owner: Vingroup, the largest real estate developer in Vietnam
-Challenge: Need to withstand a 215km/h typhoon and meet LEED Gold certification
– Solution :
-Customized Ho Chi Minh City skyline texture using SKW-G550+PVDF coating
-Install AI stress monitoring system to provide real-time warning of structural risks
– Achievement :
-Zero tile detachment, saving $520000 in post disaster repair costs
-Received the “Best Disaster Prevention Design Award” from the Vietnamese Ministry of Construction, with a LEED score of+15
Customer review :
During the 2023 typhoon season, Sunrise was the only commercial entity in Ho Chi Minh City that remained open. SKW’s roof system helped us avoid a loss of at least $2 million in revenue
Nguyen Van A, Engineering Director of Vingroup
2. Coral Coast Resort, Sabah, Malaysia
–Corrosion Protection Plan:
-Adopting Seawater Pro special coating (resistant to Cl ⁻ ion concentration up to 50000ppm)
-The drone inspection system generates corrosion heat maps every quarter
–6-year tracking data:
| Indicator | SKW Colored Stone Tile | Competitive Galvanized Tile |
|---|---|---|
| Annual maintenance cost | $0.8/m ² | $4.2/m ² |
| Customer complaint rate | 0.3% | 12.7% |
| Increase in occupancy rate | +28% | -9% |
4、 Selection toolkit and free resources (new operation guide)
1. Typhoon Risk Level Calculator
Usage steps :
- Access https://skwroof.com/contact-us/
- Input parameters:
-GPS coordinates (or click on location selection on the map)
-Building height, surrounding terrain (flat/mountainous/coastal)
-Roof slope (10 ° -60 °) - Obtain results:
-Recommended tile models and installation specifications
-Cost Budget Table for Wind Reinforcement (including Material/Labor Details)
User case:
After using this tool in a hotel in Cebu, Philippines:
-The original design used galvanized steel plate, with a budget of $187000
-Suggest upgrading the tool to SKW-G550+eaves reinforcement, with a total cost of $213000
-Actual saved typhoon losses of $390000 (investment return rate of 183%)
2. Free access to resources
▶️ [Download the PDF of the Southeast Asian Rooftop Anti Typhoon Design Code]
-Including 78 pages of technical parameters, construction details, and acceptance standards
▶️ [Watch the actual test video of the University of the Philippines]
-4K image quality display of the entire 240km/h wind tunnel testing process
5、 Future trend: Intelligent roof protection system (new chapter)
1. Internet of Things (IoT) monitoring solution
–Sensor Network : -Real time monitoring of wind speed, tile displacement, and corrosion rate -Data dashboard warning of potential risks (such as automatic alarm for displacement>3mm)
–Malaysia Pilot Project :
-Deploy 500 monitoring points around the Petronas Twin Towers in Kuala Lumpur by 2023
-Successfully warned of 3 strong wind accidents, with evacuation time advanced by 40 minutes
2. Self repairing coating technology
–Microcapsule technology:
-Embedding repair agent capsules with a diameter of 50-80 μ m in the coating
-Automatically released when scratch depth>20 μ m, repair rate ≥ 92%
– Laboratory data :
-Scratch resistance improved by 300% (ASTM D3363 test)
-Expected to be mass-produced by 2025, with a cost increase of approximately $0.8 per square meter
6、 Frequently Asked Questions (Added FAQ)
Q: Do colored stone tiles in typhoon areas need additional reinforcement
A： When the wind speed is greater than 200km/h, it is recommended to:
-Encrypt fixed nails to 6 per piece (standard is 4)
-Install wind resistant clips on the eaves ($0.5 per piece, spacing ≤ 300mm)
Q: How to determine if the existing roof is safe
A： Three step quick self check:
- Check if the edge of the tile is curled (caution is required if it is greater than 3mm)
- Check for water stains in the attic after rain (early signs of leakage)
- Use drones to capture the condition of the entire roof before the typhoon season every year