A Comparative Study of Wind Tunnel Tests and Design Codes in Evaluation of Along-Wind Effects on Towers

Table 3

Wind velocities and gust effect factors.

Parameter	KBC	ASCE	EUROCODE	AIJ
Average time	10 min	3 s	10 min	10 min
Basic wind velocity at 10 m	40 m/s	55.2 m/s	40 m/s	40 m/s
Height correction factor at 120 m	1.456	1.689	1.479	1.448
Wind velocity at 120 m	64.1 m/s	71.7 m/s	59.2 m/s	57.9 m/s
Turbulent intensity at 120 m	0.120	0.132	0.128	0.124
Gust effect factor (rigid)	1.756	0.855	1.899	—
Gust effect factor (flexible)	2.412	1.370	2.651	2.402