--- title: World-Health-Organization-Manila-Headquarters description: The Regional Headquarters for the Western Pacific, located in Manila, Philippines, represents World Health Organization in the Asia Pacific. The office act --- - [Wavin India Blog](https://blog.wavin.com/en-in) - [World Health Organization Manila Headquarters, now with QuickStream Siphonic Roof Drainage System](https://blog.wavin.com/en-in/world-health-organization-manila-headquarters) # World Health Organization Manila Headquarters, now with QuickStream Siphonic Roof Drainage System Case Study Share - [![Facebook](https://blog.wavin.com/hubfs/raw_assets/public/Wavin_March2022/images/facebook.svg)](http://www.facebook.com/sharer/sharer.php?u=https://blog.wavin.com/en-in/world-health-organization-manila-headquarters) - [![Twitter](https://blog.wavin.com/hubfs/raw_assets/public/Wavin_March2022/images/twitter.svg)](https://twitter.com/share?text=World%20Health%20Organization%20Manila%20Headquarters,%20now%20with%20QuickStream%20Siphonic%20Roof%20Drainage%20System&url=https://blog.wavin.com/en-in/world-health-organization-manila-headquarters) - [![LinkedIn](https://blog.wavin.com/hubfs/raw_assets/public/Wavin_March2022/images/linkedin.svg)](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.wavin.com/en-in/world-health-organization-manila-headquarters) - [![Email](https://blog.wavin.com/hubfs/raw_assets/public/Wavin_March2022/images/email.svg)](mailto:?body=https://blog.wavin.com/en-in/world-health-organization-manila-headquarters) 2 min read time 2017-02-07 06:47:00 --- The Regional Headquarters for the Western Pacific, located in Manila, Philippines, represents World Health Organization in the Asia Pacific. The office acts as the health conscience of the Asia Pacific Region now with QuickStream Siphonic Roof Drainage System The Regional Headquarters for the Western Pacific, located in Manila, Philippines, represents World Health Organization in the Asia Pacific. The office acts as the health conscience of the Asia Pacific Region. In 2009, the original office building was extensively damaged by the historic strong typhoon Ketsana (known as “Ondoy” in the Philippines).   A plan was made to rehabilitate, renovate and improve the building and its facilities which involved the installation of a new roof drainage system that can withstand intense rainfall of over 400mm in 24 hours (Typhoon Ketsana, at its peak, was documented to have released 455mm of rainfall in 24 hours!). Wavin QuickStream Siphonic System was the only choice by the lead designer and consultant, Meinhardt Philippines, Inc. for the new roof drainage requirements for this renovation project which was done in 2016.  The design had a roof area of 2,400 square meters, and mandated a flow rate of 168 liters per second capacity.   The roof drainage was designed with the help of the Wavin QuickStream Siphonic Software to ensure optimum performance for the whole system. Taking the lead in this project is Wavin’s Philippine partner for QS Siphonic System:  Unitec Pipe Manufacturing Corporation.   ![](https://www.wavin.com/en-in/-/media/project/fluent/mexichem-wavin/wavin-corporate/india/images/knowledge-center/cases/750x465---body-image/18b4b07e-8400-4910-90b4-b4fd7d8069f8_who.png) For queries about the Wavin QuickStream Siphonic System, please contact your local Wavin representatives, or you may visit www.wavin.asia  #### Share this page  ## Our solutions [![Wavin Drinking Water Solutions](https://blog.wavin.com/hubfs/Denmark/DK%20-%20blog/Hand%20holding%20a%20glass%20that%20is%20being%20filled%20with%20drinking%20water_1024x1024px_E_NR-18865%20copy.jpg) ### Drinking water Delivering clean water efficiently and safely has become a world-wide problem. Water is lost due to leakages and ageing networks. We need to improve the distribution of clean drinking water from source to tap. 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Simultaneously, ageing and poorly designed sewer systems contaminate groundwater resources. We need to future-proof wastewater transport and make sanitation accessible for everyone. We will work towards these goals by building sewer systems with modern technology, preventing leakages, corrosion and clogging of sewer systems, and boosting renewal of sewer infrastructure. ](https://www.wavin.com/en-en/solutions/solutions-for-sewer) [![Wavin Waste Water Solutions](https://blog.wavin.com/hubfs/Czechia/Blog-migrace/AS%20plus%20Wavin%20NL.jpg) ### Waste Water We need to future-proof wastewater transport and make sanitation accessible for everyone. Although drainage pipes may sound like a simple form of construction, there are many considerations behind a good and solid drainage system in buildings. We offer a range of market-leading and BIM-supported waste-water solutions incl. low-noise. 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