STRUCTURAL STEEL DESIGN CES 523DESIGN WIND LOADINGMAC 15 JULY 15

Location of Site: Butterworth Type of Terrain: Sub-urban Altitude of site: 9 m Closest Distance to Sea: 10 km Height of Building: 75 m Length of Building: 45 m Width of Building: 40 m

Site Wind Speed Vsit = Vs x Md x Mz x Ms x Mh Basic Wind Speed for Zone 2, Vs = 32.5m/s Terrain Multiplier, Mz,cat Terrain Category 3 and Height of 75 m .: Mz,cat = 1.12 Shielding Multiplier, Ms = 1.0 Hill Shape Multiplier, Mh = 1.0 Vsit = 32.5 x 1.0 x 1.12 x 1.0 x 1.0 = 36.4 m/s Design Wind Speed

Vdes = Vsit x I Importance Factor, I Category Structure = 2 .: I = 1.0 .: Vdes = 36.4 x 1.0 = 36.4 m/s

Wind Acting on Short Faces Design Wind Pressure, p p = 0.5 air Vdes2 Cfig Cdyn External Pressure Coeficient, Cpe For Windward h > 25m .: Cpe = 0.8 For Leeward d/b = 45/40 and 10o .: Cpe = -0.45 For Sidewall Horizontal Distance from windward edge = 0 to 1h (45 m