Condensate pumps are high rotary machines, in which the canter of gravity is situated above the top surface of the foundation plinth. This might cause to big displacement amplitudes during normal work of the machine. In the paper different way of building up the foundation was proposed using the secondary turbine hall fittings and different ways of calculation according to Polish Standards was presented as well. Results of numerical analysis of SOLID models Dlubal RFEM software were presented consisting of the different structures comparison. Finally, the SOLID results were compared with the SURFACE results. Systems were analysed in non-resonance frequency and in resonance frequency as well.

Keywords: block type foundation, pumps’ foundation, damping.