This Floor Vibration Analysis (FVA) tool analyses the dynamic response of floor systems.
Information about the floor grid and loading is input via a simple interface. The beam section sizes can be either user-defined or the FVA tool can determine optimised primary and secondary beam sizes using the online design tool for HSS beams: http://strobe.steel-sci.org. The FVA tool then calculates the critical response factor for the floor system by performing an eigenvalue analysis using finite element methods. The mode shapes, frequencies and modal masses for the floor are determined and used to calculate the acceleration. In accordance with the assessment method in SCI Publication P354, the steady state response factor is determined from the weighted root mean square (rms) acceleration and the transient state response factor from the weighted peak acceleration. The critical response factors are compared against regulatory limits in ISO 10137. The FVA tool can analyse a range of floor systems, including beams (rolled sections in S355/460, homogenous and hybrid plate girders in HSS), floor slabs (solid concrete and various composite decking products) and loading types (normal walking and specialist loading functions relevant to gyms, hospitals and laboratories). The floor systems are limited to rectangular grids with capability for defining openings for a staircase or building core.
Although care has been taken to ensure that the calculated resistances are correct, users should verify the output. The Steel Construction Institute and other parties associated with this software and website assume no responsibilities for errors or misuse of this software, or damage arising from use of this software