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0 <br /> 4 <br /> BUILDING DESIGN PROPERTIES SYMBOL VALUE UNIT <br /> BASIC WIND SPEED V 1140_ mph Figure 26.5-1C,page 249a <br /> ROOF PITCH 6 I >7 to 27__ degrees <br /> MEAN ROOF HEIGHT h ft <br /> ROOF SETBACK a 4 It <br /> ADJUSTMENT FACTOR FOR BUILDING <br /> HEIGHTAND EXPOSURE 1 1.00 Figure 30.5-1,pg 347 <br /> TOPIGRAPHICAL FACTOR K 1 Figure 26.8-1,pg 252 <br /> EXPOSURE B '!I- <br /> EFFECTIVE WIND AREA 10 li- sf <br /> ZONE 1 ZONE 2 ZONE 3 <br /> VARIABLE DESCRIPTION SYMBOL VALUE VALUE VALUE UNIT REFERENCE:ASCE 7-20 <br /> NET DESIGN WIND PRESSURE(UPLIFT) P°bap -32.3 -56.2 -83.1 psf Figure 30.5-1,pg 346 <br /> NET DESIGN WIND PRESSURE(DOWN) P°::.' 20.3 20.3 20.3 psf Figure 30.5-1,pg 346 <br /> NET DESIGN WIND PRESSURE(UP) P_, -32.30 -56.20 -83.10 psf Calculation:P,,,p=Xx Knx P„� <br /> NET DESIGN WIND PRESSURE(DOWN) Pn°r down 1 20.301 20.30 20.30 psf Calculation:Pt,mw°=Tx K„x P°°r3o <br /> DESCRIPTION SYMBOL VALUE VALUE VALUE UNIT <br /> DEAD LOAD D 3 3 3 psf <br /> SNOW LOAD S 0, 0 0 psf <br /> DESIGN WIND LOAD W -32.30 -56.20 -83.10 psf <br /> ASD DESIGN LOAD(UPLIFT) Pd.1, -22.70 -41.21 -62.05 psf Calculation:Pd.it°=D+SQRT(0.6)W(asd) <br /> DOWNFORCE CASE 1 Pd..lp 3 3 3 psf Calculation:Pd�ly=1.OD+1.OS <br /> DOWNFORCE CASE 2 Pd".is° 23.30 23.30 23.30 psf Calculation:Pd�,e°=1.0D+1.0W <br /> DOWNFORCE CASE 3 Pd"ln, 1 18.23 18.23 18.23 psf Calculation:Pde:ig°=1.OD+0.755+0.75W <br /> DESIGN FACTORS&CALCULATIONS FOR THE USE OF L-FOOT TO ROOF TRUSS <br /> DESCRIPTION SYMBOL VALUE VALUE VALUE UNIT <br /> MODULE LENGTH C 5.42 ft <br /> MODULE WIDTH B 3.25 ft <br /> DESIGN LOAD PER MODULE T -399.54 -725.44 -1092.25 Ibs Calculation:T=Area•W <br /> DISTRIBUTED LOAD(UPLIFT) w -61.47 -111.61 -168.04 pif Calculation:w=T/B•2 <br /> DISTRIBUTED LOAD(DOWNFORCE) w 37.86 37.86 37.86 plf Calculation:w=PB/2•�`:°me2 r,it<oe<r°w <br /> RAIL SPAN BETWEEN ANCHORS POINTS L 6 4 2s <br /> POINT LOAD(UPLIFT) R -368.80 -446.43 -336.08 Ibs Calculation:R=PLB/2•Au°'"�2r1k pefO4' <br /> POINT LOAD(DOWNFORCE) R 227.18 151.45 75.73 lbs Calculation:R=PLB/2•'�:°me:2 rmiz"-w <br /> L-FOOT CONNECTED BY WOOD SCREW <br /> Specific Gravity,Rafter G 0.5 0.5 0.5 Table 11.2A,NDS 2005,page 68(Southern Pine) <br /> Min.Dia.of Lag Screw,1/4 D 0.25 0.25 0.25 In <br /> Pullout Value of W 225 225 225 Ibs/in W=1800 G3J'D3/4 <br /> #of Lag screws 2 2 2 <br /> Thread Length Td 1.75 1.75 1.75 In Table L2,NDS 2005 <br /> Design Pullout Value per Mount Wt 787.5 787.5 787.5 Wr=W"#of Lags•Td <br /> SAFfEYFACTOR SF 1 2.14 1.76 2.34 Calculation:SF=WVR(Uplift) <br /> a+ef ar otmrmme■ne/d f.•eN.+.Z . <br /> a.mxr/z-sawll..adea.m.,,d..rMrwr.... <br /> &--I---ekf w)ow rwlplr,tali.,hh+N-.hq.r. <br /> D-bw In utxh-116hr). P.•ge.m I.11-d.2>nt <br /> 1,T,ur 7rwdrnt rolttwr 2 <br /> NT°re],fxlw.lhdhh.v�wtlmrd nx/n <br /> flat Boor Nip Roof(7' 1 S 2r <br /> 00 <br /> Gabl.R.M(es Try '/ cable Reof(7'.•6 ds•) <br /> GOB//i <br /> ❑ Inlfrferzw»r ® CI-Zoo- =•� , • '�. <br /> RmA_ie+.Ilwih.So.. awn•Ten.lYhr.•z°nt Re°h.T ] �t • ���L-r-//tt f�� <br /> t.n..AICL V1W,I-au3^IwBFAMT NOJa.tsrtra.Pa�rl p+i / <br /> -0 <br /> /IlliII <br />