High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade1Calculation Sheet for Canopy of Undergroud Lobby-Doha High Rise Office BuildingKing Glass Engineering GroupCalculated by： Checked by： Approved by：Architectural: Structural: High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade2This calculation sheets should be read in conjunction with the related drawings.1. Calculation of Perforated Al SheetThe perforated Al sheet at the outermost of the canopy is the most critical one in press bearing and calculation is required. Relevant sketches are as follows:Figure 1-1 Perforated Al Sheet Plan High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade3Figure 1-2 Section A-AFigure 1-3 Section B-B High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade4Figure 1-4 Sample C High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade5Figure 1-5 Sample DFigure 1-6 Sample E High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade61.1 Calculation of Supporting Frame and Rinforcement Bar of Al Sheet1.1.1 Design SketchFigure 1-6 Supporting Frame and Reiforcement BarThe in the sketch symbolizes hinged connection.Section of frame is as follows:Figure 1-7 Frame SectionSection data of reinforcement bar is as follows: High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade7Figure 1-8 Sectional Data of Reinforcement Bar1.1.2 Standard Load1.1.2.1 Standard WindloadThis project is 100m from the coastline, which ground surface roughness is sorted as “Village”.Building-type factor: Kb=2。 （ BS6399 part2-1.6.1 table 1）Building height: H=1.3m300m,Cr0.25,( BS6399 part2-1.6.1 table 1)Effective height: He=1.3m According to Section 2.2.2, part 5 of tender document for Doha High Rise Office Building, the basic wind speed Vb is 25m/s.Site windspeed: Vs=VbSaSdSsSp (BS6399-part 2-2.2.2)Sa=1+0.001 s (BS6399-part 2-3.2.2) In which：In which：Vb Basic wind speed.Sa Height factorSd Direction factor (Ref. BS6399, Clause2.2.2.3, Volume 2.)Ss Season factor (Ref. BS6399, Clause2.2.2.4, Volume 2.)Sp Propability factor (Ref. BS6399, Clause2.2.2.5, Volume 2.) s is the altitude of site ground surface. High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade8 s=2m, So, Sa=1+0.001x2=1.002Sd =1.0，S s =1.0 ，S p =1.0 Vs=VbSaSdSsSp=25x1.002x1.0x1.0x1.0x1.0=25.05m/sEquivalent wind speed is：Ve=VsSb (BS6399 Part-3.2.3.1, Division 2)Sb= Sc1+（ gtxSt） +Sh (BS6399 Part-3.2.3.2.2, Division 2)In which：Sb Factor of topography and building. Sc Wind field factor (Ref. BS6399 table 22, Division 2)St Onflow adjustment factor(Ref. BS6399 table 22, Division 2)gt Gust peak factor (Ref. BS6399 clause 3.2.3.3, Division 2)Sh Topography increment (Ref. BS6399 clause 3.2.3.4, Division 2) :Sc=0.873（ effective height He=1.3m） ; St=0.203（ effective height He=1.3m） ;gt =3.44; Sh=0 ： Sb= Sc1+（ gtxSt） +Sh= 0.873x1+（ 3.44x0.203） +0=1.483Effective wind speed at 1.3m:Ve=VsSb=25.05x 1.483=37.15m/s Dynamic press is：q=0.613Ve2=0.613x(37.15)2=846N/m2=0.846KN/m2 (BS6399, Part-3.1.2.1,Division 2)static press p ：p=qeCp （3.1.3.1.3 b ） qe is dynamic press susdained by canopy or building members under effective wind speed. See 3.1.2；Cp is the coefficient of static press on members. See 2.7.qe =q=846N/m2Cp=2.0p= qeCp=846X（2.0）=1692 N/m2Punching ratio of perforated Al sheet is 32.1%.So the standard effective windload on Al sheet is:(1-0.321)x1692=1149 N/m2（ Attraction） High Rise Office Building， Doha， Qatar Calculation Sheet for the Facade91.1.2.2 Standard Deadload（1） ，Deadload of Perforated Al SheetThickness of Al sheet is 3mm with punching ratio 32.1%. For the strength of material is decided by youngs modulus and moment of inertia,ie rigidness：EI, in which E is youngs modulus and I is moment of inertia. In this design, the sheet is uniform