Royal La Rasante is an exclusive sports club and spa with a lively history. Founded in 1902, the club closed its doors in 1997, only to be rebuilt in 2001. The project contains several fitness studios for aerobics, spinning and yoga, and a large fitness hall. The wet area consists of 2 swimming pools - a training pool and a leisure pool - with steam baths, saunas and shower rooms. Outside, there are 9 tennis courts, 2 hockey fields and a running track. Furthermore, the club also contains: a restaurant, a crèche, a spa and beauty salon, a meeting room facilities, offices, changing rooms, a laundry, and an underground car park.

All these functions demand numerous different climate conditions. VK designed a series of complex building services studies which took into account the different temperatures, relative humidities and ventilation systems per space. The consumption of sanitary hot water for laundry, kitchens, showers, ... was a complex exercise. Simultaneity coefficients and estimation of peak consumption resulted in a correct dimensioning of production and buffering of the various zones. The hot water was also divided into different circuits, related to building area or type of user of hot water.

Several energy saving measures were integrated. For example, heat recuperation through cross flow heat exchangers. Using free cooling the fresh outside air is used to cool the water. Other techniques applied are underfloor heating, condensing boilers, speed regulated ventilation groups, ...