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Diagrams <br /> O I p I 1r 01 <br /> i 1 i 1 <br /> i 1 i 1 9 <br /> 1 1 i 1 <br /> 1 1 i 1 <br /> 01 (D 1 2r O 10 h <br /> 1 1 I g I <br /> ELEVATION <br />• PLAN <br /> cd <br /> Notation <br /> Na= 10%of least horizontal dimension or 0.4h,whichever is smaller,but not less than either 4%of least horizontal <br /> dimension or 3 ft(0.9 m).If an overhang exists,the edge distance shall be measured from the outside edge of the <br /> coverhang.The horizontal dimensions used to compute the edge distance shall not include any overhang distances. <br /> B=Horizontal dimension of building measured normal to wind direction,in ft(m). <br /> o h=Mean roof height,in ft(m),except that eave height shall be used for 0<-10°. <br /> w 0=Angle of plane of roof from horizontal,in degrees. <br /> ui <br /> External Pressure Coefficients <br /> -4.0 D KID -5.0 1p 100 <br /> -3.E 4.9 Overhan 4.7 <br /> R, -3.6 r -16 .4.6 B- <br /> ° •3.4 •4.4 <br /> U .3.2 .4.2 <br /> -3.0 39 -4.0 U <br /> -is iy •3.9 <br /> N v •2.6 G -3.6 <br /> c U .2.4 - Cv .3.a <br /> ° d -20 1 40 <br /> -1.6 a.t -2.6 <br /> c g .1.6 8 t6 -2s <br /> Q Uu •1.4 yUu -2A 1 -23 <br /> y -t0 •1.0 -0 i -10 <br /> on <br /> 45 � :�A 1 S <br /> v -0.2 12 <br /> 0 -t0 <br /> +0.2 - 40.3 -as <br /> ti t0.4 - 41.6 <br /> a 40.6 0.7 -OA <br /> {0.3 - � 42 <br /> +tO t 1020 50 too 200 5001000 1 t0 20 50 too 200 5001000 <br /> (00 (09) 09) (46)(93)(46) (166)(929) 109) (19) (46)(93)(16) (4-90) <br /> o Effective Wind Area,ft 2(m2) Effective Wind Area,ft 2(m2) <br /> QNotes <br /> 1.Vertical scale denotes(GCp)to be used with qh. <br /> 2.Horizontal scale denotes effective wind area,in ft2(m2). <br /> 3.Plus and minus signs signify pressures acting toward and away from the surfaces,respectively. <br /> 4.Each component shall be designed for maximum positive and negative pressures. <br /> 5.Values of(GCp)for roof overhangs include pressure contributions from both upper and lower surfaces. <br /> 6.If overhangs exist,the lesser horizontal dimension of the building shall not include any overhang dimension,but the <br /> edge distance,a,shall be measured from the outside edge of the overhang. <br /> FIGURE 30.3-213 Components and Cladding [h<60 ft(h< 18.3 m)]: External Pressure Coefficients, (GCp), for Enclosed and Partially <br /> Enclosed Buildings-Gable Roofs, 7°<0<20' <br /> Minimum Design Loads and Associated Criteria for Buildings and Other Structures 337 <br />