Thanks to the GERB spring support of fans, heavy block foundations are no longer required. Instead of he need for a massive RC-block, the fan foundation can either be eliminated or reduced to a small size slab. The efficiency of vibration isolation of more than 95% will not cause any disturbance to the surrounding area. Furthermore, the low total weight of the spring supported fan protects from settlement of the substructure.

https://www.gerb.com/manufacturing-industry-energy/