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Rainwater harvesting - a case history - Warehouse in Peterborough

RAINWATER HARVESTING

The Business and the Site

Big Web Warehouse Ltd., a sister company to Rainwater Harvesting Ltd., were planning an office extension to their giant warehouse near Peterborough.

They took the opportunity to install rainwater harvesting both to provide water for all the toilets and for truck washing, and, incidentally, to show proof of concept for installation techniques and new rainwater management products.

Installation

A GRAF Carat 2700 litre tank was installed next to the new extension to store all the water off the new roof and a part of the existing roof. Excess water goes to soak-away as normal. The rainwater is pumped by a submersible pump through a Rain Director control panel to its smart header tank in the roof of the warehouse from where gravity takes the water to the toilets as required. Vehicle washing is assured by a tap fed directly off the submersible pump prior to the Rain Director control panel; in this way the full power of the pressure-sensitive pump is available when the tap is turned on.

The first picture A shows the tank lowered into the hole, with a temporary cover over the turret. Good! We advise our clients to ensure that no dirt gets into the tank at any stage of installation so that the pump, valves and appliances do not suffer from grit that might get in.

The second picture B shows the pea shingle being distributed round the base of the tank to fill in the concavities of the tank.

The bottom picture C shows the turret of the tank with the pipe from the roof gutters (furthermost right), the service pipe to the
building for the pipe from the pump and its cable (underneath) and the overflow/debris pipe running from behind the turret to the soak-away in the black turret. Very neat.

Quotes

Dave Gayton, Warehouse Manager for Big Web Warehouse says “The rainwater is staying perfectly clean in the cool of the ground and all toilets running perfectly on rainwater. We’re delighted with the installation and look forward to some savings on the water bill”.

References

RainWaterHarvesting.co.uk is the UK based supplier of rainwater harvesting systems whose mission has been to make rainwater collection simpler and cheaper for homeowners and contractors.

www.rainwaterharvesting.co.uk
Marcus Bicknell – marcus@rainwaterharvesting.co.uk
01733 405118
October 2011

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