Investigation of Snow Load Effects on Modal Parameters of a Steel Structure Roof

Table 1

The mass participation factors of the first 6 modes.

Modes	Frequency (Hz)	MPF (x direction)	MPF (y direction)	MPF (z direction)
1	1.868	5.7502e − 7	0.088211	2.9071e − 3
2	2.1515	0.13824	2.0175e − 05	9.2569e − 6
3	2.4782	0.043337	1.3335e − 05	1.1031e − 5
4	2.6548	1.3547e − 5	0.051783	0.15724
5	2.8389	1.7101e − 6	0.033359	0.043044
6	3.301	0.033303	4.0892e − 05	1.2661e − 3