Project Triathlon is plot No. 12 on the EMG (East Midlands Gateway) site in Castle Donington. The project consists of a 35m tall high bay warehouse and a 20m tall low bay warehouse. All roof areas are drained via primary and secondary siphonic drainage systems.

Vaccines Manufacturing and Innovation Centre (VMIC)

West Siphonics has been selected to develop the Siphonic Roof drainage scheme for the new Vaccines Manufacturing Centre in Didcot, Oxford. This state-of-the-art building will benefit from our industry leading design with both Primary and Secondary siphonic rainwater drainage systems offering the greatest protection to the building and its invaluable contents. West Siphonics will Design, Manufacture and install 1400m of pipework to drain a total of 410 litres per second from the roof.

The rapid acceleration of this 7000 square-metre building due to the current Covid -19 pandemic means the doors will now open 12 months ahead of the scheduled date in 2022. Works began on the site at the Harwell Campus in early April, West Siphonics will commence with the installation of the systems in July.

This impressive site contains a 1,000,000 square foot warehouse and a multi-storey staff car park. The main warehouse roof consists of 2 eaves gutters & 14 valley gutters, the roof is also hip ended. The total roof area is approximately 91,950 m2, based on the specified rainfall intensity and geographical location of the project, this equates to a staggering 5,300 litres of rainwater per second falling onto the warehouse roof during peak storm conditions.

Due to the vast amount of water on the warehouse roof and external yard area, your typical surface water underground drainage network would simply not suffice. Therefore, approximately 1.5 Kilometres of Ø2800mm (yes, 2.8-metre diameter pipe!) was installed underground around the full perimeter of the warehouse to cope with the extreme volume of water.

A 261,000 sq ft distribution/industrial facility strategically located 1 mile from junction 28 of the M1. The 234m long warehouse was drained via siphonic downpipes located at only one end of the warehouse, drastically reducing the amount of underground drainage required.