Characteristics of wind induced net force and torque on a rectangular sign measured in the field

Douglas Smith, Delong Zuo, Kishor Mehta

Research output: Contribution to journalArticlepeer-review


Full-scale field tests for a billboard sign are conducted at the Wind Science and Engineering (WISE) field site to provide a benchmark for model scale tests performed in the wind tunnel. The field site is located at the Reese Technology Center in Lubbock, Texas. The aspect and clearance ratios for the sign are 2.0 and 0.5, respectively. Wind induced forces and torques on the full scale sign are established using 470 15-min duration records. All the records used are stationary in speed and direction and have mean wind speeds greater than or equal to 15 mph (6.7 m/s). The characteristics of the parent and joint distributions for force and torque acting on the sign are presented herein. The characterization includes empirical functions to describe the mean, standard deviation, skewness, kurtosis, and their correlation in time as a function of angle of attack. Mean extreme force and torsion coefficients are provided along with mode and dispersion parameters for the Fisher–Tippet Type I di
Original languageEnglish
Pages (from-to)80-91
JournalJournal of Wind Engineering and Industrial Aerodynamics
StatePublished - Oct 2014


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