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.

 

For queries about the Wavin QuickStream Siphonic System, please contact your local Wavin representatives, or you may visit www.wavin.asia

The Wavin Academy building contains meeting facilities and a fully equipped training room where visitors can work with the various Wavin systems. Wavin Turkey expects to welcome over 10,000 partners such as plumbers, contractors and engineers each year.

The Wavin Academy in Adana is the second of its kind to open this year. In March, Wavin Italy officially opened a state-of-the art Solutions Center next to the factory in Santa Maria Maddalena, near Bologna. The center has a strong focus on Wavin’s innovations, with a meeting room designed to conduct training courses and an extensive showroom where practical skills can be trained.

You can visit the website here

 

The challenge

The area to be heated included a large, open plan kitchen as well as a utility room and entrance hallway. Radiators had previously been used to heat this space, but had failed to provide even heat and were considered unfit for purpose.

Our approach

Underfloor heating was considered the best heating solution, as it provided a cost effective way of heating the space evenly at once, with one system, operating independently from other rooms in the house. Hep2O Low-Build Max was specified, and 250m of 10mm Hep2O pipes were used over five 50m circuits on this project. Due to the large size of the panels (1200mm x 600mm x 15mm), and the flexible pipe and simple push fit fittings that make up the Hep2O system, installing the Low-Build Max system in this large area was completed in under two days, including laying all panels and pipe, installing the five-port manifold and setting up the programmable thermostat.

The benefits

Hep2O Low-Build Max was the chosen solution as the system has minimal impact on the height of the floor, allowing for a speedy installation due to minimal disruption to the current structure of the house. Being able to tile straight on top of the panels was a great bonus too as this ensured the overall build height was kept to an absolute minimum, ensuring the system was compatible with existing fixtures and fittings. The panels could be walked on in a matter of minutes, meaning the completion of this project could be carried out in the minimum amount of time.

About Low-Build Max

The Hep2O Low-Build Max system gives installers a quick and easy-to-fit heating alternative to radiators, particularly on renovation projects. The Low-Build Max panels have been specially designed to keep overall floor height to an absolute minimum. At just 15mm deep and featuring pre-routed channels for easy pipe placement, the system allows UFH to be installed quickly on all refurbishment projects – from kitchen re-fits to new spaces created by knocking walls through – without the need for existing flooring levels to be lowered. Low-Build Max is equally applicable for new build jobs and extensions. The panels are of a large enough size – 1,200mm x 600mm – to allow installers to cover large areas at speed without being too bulky to handle. As the panels can be neatly trimmed using a hand saw and secured using adhesive, installation is simple and can be carried out by just one person if necessary.

The Okada Manila Project is landmark premium hotel and casino project located right alongside the Manila Bay area.  Because of its location, anything metallic object installed may suffer extreme acceleration of corrosion and subsequent failure, due specifically to salt air environment.  The use of cast iron for its waste water piping system is certainly not an option for the design consultants.

The Okada Manila Project owners and design consultants unanimously chose Wavin AS to address the demands of the high salt air environment, as well as their building wastewater system requirements.   Unlike cast iron, Wavin AS is resistant to salt air environment and very ideal for this kind of application.  The system is very easy to install because of its push fit jointing system.  And to top it all, Wavin AS is the best in class plastic sound-insulation soil and waste piping system.

For more information on Wavin AS, please visit our website

Beijing Urban Construction Engineering Company was tasked with the development of the Guangzhou International Sports Arena that was meant to serve the Guangzhou and Pearl River Delta area. The third arena in China, it is designed and constructed according to NBA standards and this comprehensive 65,000m2 18,000-capacity stadium was built to cater for various sports and performing arts functions. Due to its importance, they needed a large, professional and reliable partner and Wavin fit the bill perfectly. The Guangzhou area is notorious for its extreme rainfall and in 2010, some areas saw rainfall intensity levels that are seen once every 300 years while others saw even more extreme rainfall levels seen only once every 500 years – both frequencies and intensities that are beyond imagination! This posed a major challenge when developing the Guangzhou International Sports Arena. Wavin was selected due to its abundant experiences in design, having worked on key international projects such as the Frankfurt Stadium and the Berlin Stadium and due to its expertise in storm water management systems for large industrial and commercial projects. Wavin’s Quickstream Roof Siphonic Drainage System is a key part of its storm water management systems, helping to drain away rainwater quickly and efficiently with its negative pressure system. In fact, it passes tests for managing severe and exceptional rainstorms – allowing the Beijing Urban Construction Engineering Company to continue with construction on a normal schedule through intense rain.

The 18,000m2 roof area of Guangzhou International Sports Arena is designed to handle rain intensity levels up to those seen once every 100 years. In 2010 however, it experienced rainfall 3x beyond its design limit – rainfall intensity seen only once every 300 years! Even in such an extreme situation, the siphonic roof drainage system offered a high degree of discharging water efficiently and effectively.

Wavin also provides software for designing a rainwater management system. Contact Wavin to find out more!

Always forward-thinking, Wavin wanted to come up with a unique roof drainage solution that would amplify all the benefits and advantages of siphonic roof drainage. And it did. It’s called Wavin QuickStream.

Gravity drainage vs. Siphonic drainage

Conventional (gravity-fed) roof drainage systems rely on gravity and water’s ability to spread out and flow to the lowest point – channeling from the roof down through the gutter, outlets and downpipes to the ground below. As water enters the downpipe, air is also drawn in and this significantly reduces the drainage capacity, making it less efficient. Additionally, gutters tend to get clogged with leaves and other debris. Blocked pipes and gutters cause the water to pond on the roof, which then may cause damage to the roof, at the very least. By contrast, a fully-engineered siphonic roof drainage system contains an anti-vortex plate that acts as a baffle and prevents air (and debris) from entering the piping system at full flow, allowing the pipes to completely fill up with water. The water is sucked or siphoned from the roof down into the drain at high velocity. The lack of air and the downward pull of the water creates a vacuum, making the drainage process fast and efficient.

The advantages of a Wavin QuickStream siphonic roof drainage system

• Fewer roof outlets and downpipes, smaller pipe diameter, shorter pipe lengths takes up less space and reduces installation costs
• Pipes run level and full, without air; higher flow rates increases efficiency
• Lateral pipes need no gradient maximises the use of the building height
• Bracketing system is unaffected by pipe elongation resulting from temperature change resilient
• Special inspection chambers allow ventilation and overflow, preventing water accumulating on the roof safety is of paramount importance to Wavin
• Wavin design software has rigorous safety checks built in, therefore we only release safe designs optimised for performance, reliability and safety
• QuickStream system is designed according to the characteristics of your building customer-focused
• QuickStream also connects to our complete range of below-ground components seamless
• Wavin bracketing system for horizontal pipe work fast, easy and safe installation
• Robust design minimises the number of parts needed makes metal roof installation trouble-free

Wavin QuickStream is backed by over 30 years experience in the calculation and design of siphonic drainage systems. Our determination to “Connect to Better” is evident in the wide spectrum of innovative and sustainable rainwater solutions that we provide. And Wavin QuickStream is proof of that.