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<br />, ;��; ������ ���►� ; C/�LCUL/�TIONS FOR FREEST/�NDIfVG SIGNS
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<br />: ASCE 7-10 D�esign Wind Loads ! i, ' ; �
<br /> FREES7a4NDING SOLID SIGNS AND WALLS (A�GR DE) ; ' �
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<br /> Buildin�Specs '
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<br /> V= 130 mph easic wind speed � Risk Category 1 Structure �
<br /> Exposure ` C � ; � �SD Load Combo Coeff: ,0.6 ' , ,
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<br /> Calcula$ions � ; , ; � � � �
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<br />� a= 9.5 � 3-sec gust speed power law exponent ; Kd= 0.85 Directionality factor
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<br />� • zg= 900' Nominal ht.of atmos.boundary layer ; � �i Kzt= `1.0 Topographic factor '
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<br /> G= 0.85 � ' � � , � ,
<br /> j � ' � Cf= 1.55 Force Coefficient ,
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<br /> ; � ...Width/Heightratio >_0.5
<br /> 130 mph�- Exp "C" ' ; � � � , , '
<br /> Monuments at grade �, ' � '
<br /> W/Ht Ratio=0.2 to 2.0 ! , ' � ' ;
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<br /> : 'DESIGN ' ; � ' �
<br /> SIGN WIND = ' � � j .
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<br /> HEIGHT PRESSURES Y � qZ � , �
<br />' 15 ft ± 24J sf 0.85 18J ;' � i
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<br />, :' 18 ft ; ' ± 25.6 psf 0 88 ; 19.5 , ;
<br /> 20 ft ± 26.2 psf 0.90 � 19.9 � ;
<br />, 30 ft � ± 28.6 psf 0.98 21J ,
<br /> � , 35 ft ± 29.5 psf 1.01 22.4 � '
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<br /> 40 ft ± 30.3 psf 1.04 23.0 � ' ' '
<br />; 45;ft� � '± 31.1 psf 1.07 � 23.6 , ' i
<br /> 50 ft ,. ± 31.8 psf 1.09 24.1 � ' , �
<br /> 55 ft ± 32.4 psf 1.12 � 24.6 � ,' '
<br />'I� , 60 ft ` ± 33.0 psf 1.14 ; 25.1 � � ' � ,
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<br /> 70 ft ; , ± 34.1 psf 1.17 ' 25.9 , ; ; ' ,
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<br /> 80 ft ± 35.1 psf 1.21 I 26.6 ` I �
<br /> 90 ft � ± 36.0 psf 1.24 ' 27.3 ; ` �
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<br />� 100 ft , ± 36.8 psf 1.27 ' 27.9 ; � , '
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<br /> 110 ft � ± 37.5 psf ' 1.Zg i 2g.5 ' '' ' , �
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<br /> I 120 ft � ± 38.2 psf , 1.32 � 29A ;
<br /> 130 ft �, ± 38.9 psf 1.34 �� 29.5 ; , i , ,
<br />� 140 ft � ± 39.5 psf 136 ' 30.0 � , ; , �
<br /> 150 ft � ± 40.1 psf 1.38 30.4 i . ,
<br /> 175 ft ± 41.4 psf 1.42 31.4 ' ' ` � '
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<br /> 200 ft t 42.6 psf 1.46 32.3 I : � � , '
<br /> 250 ft ± 44.6 psf 1.53 33.9 ' � �
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