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<br /> BUILDING DESIGN PROPERTIES SYMBOL VALUE UNIT
<br /> BASIC WIND SPEED V 140 I mph Figure 26.5-1C,page 249a
<br /> ROOF PITCH e >7 to 27 degrees
<br /> MEAN ROOF HEIGHT h 15 ' ft
<br /> ROOF SETBACK a 3 ft
<br /> ADJUSTMENT FACTOR FOR BUILDING
<br /> HEIGHT AND EXPOSURE 1 1.00 Figure 30.5-1,pg 347
<br /> TOPIGRAPHICAL FACTOR K 1 Figure 26.8-1,pg 252
<br /> EXPOSURE g ��
<br /> EFFECTIVE WIND AREA 1p sf
<br /> ZONE1 ZONE2 ZONE3
<br /> VARIABLE DESCRIPTION SYMBOL VALUE VALUE VALUE UNIT REFERENCE:ASCE 7-10
<br /> NET DESIGN WIND PRESSURE(UPLIFT) P„e,313 -32.3 -56.2 -83.1 psf Figure 30.5-1,pg 346
<br /> NET DESIGN WIND PRESSURE(DOWN) P-M 20.3 20.3 20.3 psf Figure 30.5-1,pg 346
<br /> NET DESIGN WIND PRESSURE(UP) Pie,vv -32.30 -56.20 .83.10psf Calculation:P_u,=hxK„xP_m
<br /> NET DESIGN WIND PRESSURE(DOWN) Pn.r aDwn 20.30 20.30 20.30 psf Calculation:Pn.t dD,,,n=1,x K.x P,,,m �
<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.lgn -22.70 -41.21 -62.05 psf Calculation:Pde,ign=D+SORT(0.6)W(asd)
<br /> DOWNFORCE CASE 1 Pd.1gn 3 3 3 psf Calculation:Pd,lgn=1.0D+1.0S
<br /> DOWNFORCE CASE 2 Pd.,* 23.30 23.30 23.30 psf Calculation:Pd�lgn=1.0D+1.0W
<br /> DOWNFORCE CASE Pd.l.. r 18,23 18,231 psf Calculation:Pd.lgn=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 5.22 ft
<br /> MODULE WIDTH B 3.28 ft
<br /> DESIGN LOAD PER MODULE T -388.34 -705.11 -1061.63 Ibs Calculation:T=Area`W
<br /> DISTRIBUTED LOAD(UPLIFT) w -59.20 -107.49 -161.83 plf Calculation.w=T/B•2 3r11sP--
<br /> DISTRIBUTED LOAD(DOWNFORCE) w 38.21 38.21 38.21 plf Calculation:w=PB/2`A„DD'•,2,z11,p-m
<br /> RAIL SPAN BETWEEN ANCHORS POINTS L 6 6 4 ft
<br /> POINT LOAD(UPLIFT) R -355.19 -644.91 -647.34Ibs Calculation:R=PLB/2•" "z`•'sD.,row
<br /> POINT LOAD(DOWNFORCE) R 229.27 229.27 152.851bs Calculation:R=PLB/2`M,u-2,.ibp -
<br /> L-FOOT CONNECTED BY LAG SCREW TO
<br /> ROOF TRUSS/RAFTER
<br /> Specific Gravity,Rafter G 0.55 0.55 0.55 Table 11.2A,NDS 2005,page 68(Southern Pine)
<br /> Min.Dia.of Lag Screw,5/16 D 0.3125 0.3125 0.3125 In
<br /> Pullout Value of W 306.87 306.87 306.87 Ibs/in W=1800 G3/2 Da/4
<br /> #of Lag screws 1 1 1
<br /> Thread Length Td 2.3125 2.3125 2.3125 In Table L2,NOS 2005
<br /> Design Pullout Value per Mount Wt 709.64 709.636 709.636 W,=W•#of Lags`Td
<br /> SAFTEY FACTOR SF 2.00 1.10 1.10 Calculation:SF=W,/R(Uplift)
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<br /> IMrrnsv m v]k�rcM rev 3D,sp,'1)x+n f.4v,+r4'!nx
<br /> 1.7,nr]�r.nd.nf NISI.+r 3
<br /> ftx-2-YwrNwl kd u„ w9-d-0,
<br /> Flat hoof Hip R-1(7-<•5 ilry
<br /> 000
<br /> G.bM IIeo1(BS Try G,we Roof(T cis 4f•) � \�
<br /> In,. o=on., [d Zo n ■ Co..zar., T
<br /> f.n..�.QYG]OS.N.nv.Dni-[rd IV A.YT.O Mrbwv...Osa./.D.1. 0i,
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