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9.Impact Pressure Coefficients(ASCE 7-10,Figure 6-8) <br /> r= 0.60 <br /> Conditions Rise to Span Ratio, r= C <br /> H/W Windward Quarter Center Half Leeward Quarter <br /> 0<r<0.2 -0.9 -1.30 -0.5 <br /> Roof on Elevated Structure 0.2<=r<0.3 0.60 -1.30 -0.5 <br /> 0.3<=r<=0.6 0.95 -1.30 -0.5 <br /> Roof S rin in from Ground 0<r<=0.6 0.84 -1.30 -0.5 <br /> 10.Snow Load Coefficient, Exposure Factor Ce(ASCE 7-10,Table 7-2) <br /> EXPOSURE CHOSEN: B <br /> Ex osure of Roof <br /> Fully Partially Sheltered <br /> Ex osure Factor Ex osed osed <br /> B 0.9 1 1.2 <br /> C 0.9 1 1.1 <br /> D 0.8 0.9 1 <br /> Above the tree line in windswept <br /> mountainous areas 0.7 0.8 NA <br /> In Alaska, in areas where trees <br /> do not exist within a 2 mile radius <br /> of the site 0.7 0.8 NA <br /> 11.Snow Load Ccefficient,Thermal Factor Ct(ASCE 7-10,Table 7-3) <br /> Thermal Conditions Ct <br /> All Structures exce t as indicated below 1 <br /> ru ures ep �us a ove reezmg an o ers wi co ,ven i a e <br /> roofs in which the thermal resistance(R-value)between the ventilated �.� <br /> s ace and the heated s ace exceeds 25 de F x h x ft2/btu <br /> Unheated structures and structures intentionall ke t below freezin 1.2 <br /> Continuously heated greenhouses with a roof having a thermal 0.85 <br /> resistance R-value tess than 2.0 de Fx h x ft2/btu <br /> 12.Importance Factor for Snow Is(ASCE 7-10,Table 7-4) <br /> BUILDING CAT.CHOSEN: II <br /> Building Occupancy Category I, <br /> I 0.8 <br /> II 1 <br /> I11 1.1 <br /> IV 1.2 <br /> JOB NO: Able Energy <br /> NAME: Robb Residence <br /> Sheet 6 <br />