Widespan Membrane Roof Structures 179 XA△AP ADABAPBAPA AOHNA KEPATIINI KAIEAPIANH MOEXATO BYPONAE NE AnOE AHMHTP例DE AIOYnOAH 233.699 3KM APANETEONA AAAIO中AAHPO RK孙A 910.906 1.830.93010KM EAAHNIKO Fig.5.Geographic location of the stadium The model has been made in a geometric scale of 1:250 and includes:the roofing, the stands,all the structures of the stadium,and other private and public buildings not far then 250 m (in full scale)Figs.10-11 from the centre of the stadium.The geometric scale has been chosen in order to fulfil the similitude laws (Figs.6-9). In turn the extension of the model around the stadium was dictated by the chosen scale and by the diameter(2m)of the rotating platform over which the model has been placed in the wind tunnel. Fig.6.Profile of mean wind velocity Fig.7.Profile of the turbulence intensityWidespan Membrane Roof Structures 179 Fig. 5. Geographic location of the stadium The model has been made in a geometric scale of 1:250 and includes: the roofing, the stands, all the structures of the stadium, and other private and public buildings not far then 250 m (in full scale) Figs. 10-11 from the centre of the stadium. The geometric scale has been chosen in order to fulfil the similitude laws (Figs. 6-9). In turn the extension of the model around the stadium was dictated by the chosen scale and by the diameter (2m) of the rotating platform over which the model has been placed in the wind tunnel. Fig. 6. Profile of mean wind velocity Fig. 7. Profile of the turbulence intensity 14 16 18 20 22 24 26 0 10 20 30 40 50 60 70 80 90 approx esponenziale approx logaritmica