High-rise drainage needs just one stack

Geberit, soil stack, drainage
Single-stack drainage for high-rise buildings — Geberit’s Sovent fitting.

The first UK installation of Geberit’s Sovent space-saving drainage and ventilation solution for high-rise buildings is the Premier Inn in Birmingham. Since there is no need for a 2-stack drainage system, Sovent takes up less space in the service riser while servicing bathrooms in this 140-bedroom hotel efficiently, quietly and without the risk of unpleasant smells.

Rapidly changing pressure situations in conventional discharge stacks above a certain height can lead to unwanted side effects. Floor pipes connected to the stack could, for example, be sucked dry by high negative pressure or blown dry by overpressure. To prevent such problems, the drainage systems of many high-rise buildings include generously dimensioned discharge stacks and a parallel ventilation pipe connected with this stack at regular intervals.

Sovent prevents hydraulic closures in the discharge stack caused by floor connections, enhancing its flow capacity. Sovent also ensures a supply of air between a branch discharge pipe and discharge stack, making it possible to dispense with parallel ventilation pipes. In addition, a partition prevents foam or splash water getting into the branch discharge pipe.

Also installed in this hotel is Geberit’s Silent-db20 wastewater pipe with built-in sound insulation and the Mapress press-fit system for general plumbing.

The systems were installed by Sharpe Mechanical Services.

For more information on this story, click here: August 2013, 128
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