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<br /> Hollow Str.uctural I�ipe in [3endiri ; � , ; , � �
<br /> Allowable Stress Design per 2005 AISC Manual of Steel Con truction 13th'Ed. ' , ' :
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<br /> Material Proper;ties , ; ; ; � � ;
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<br /> Yield Stress,ANSI Sch-40 Steel:. Fy= � 35 k i ; � ,Safety Factor= 1.67 ' Per Section;63.4' 4
<br /> Modulus of Elasticity: E,= ' �29000 k i ; , ; j , � '
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<br /> Meml�er Properties aNSi 6°Schedule 40 teel pipe ; � , � ; � , ;
<br /> Nominal size: . `6°�diam - Sch 40 ' � � ' ; ' � � �
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<br /> Outside Diameter ' d = ' 6.625 in � i Moment of I'nertia: Ix= , 28.1 in4
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<br /> Wall Thickness� � t= ' 0.28 in Section Modulus: � S= � 8.50 in3 �
<br /> � � � � � Deflection Limit: ' Defl= L/80 �
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<br /> � D.esign wind pressure: P= 24.7 � psf ; ' , ' � ; �
<br /> , Sign area 1: A1= � �104.5� ; sq ft ...tributary area 1 fo'r each post(e.g.sig'n) �
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<br /> Eccentricity of applied force: ; e1= � 5.5� i ft� � ...distance to area 1 centroid ;
<br /> Sign area 2: ; A2= � ' 0:0 i � Sq ft ...tributary area�2 for each post(e.g.po'st) �
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<br /> Eccentricity of applied force: � e2 = � 0.0 I ft; ...distance to area 2 centroid {
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<br /> (1):Yeelding Limit Sta#e I ' I ; ' '
<br /> M!n=, Fy*S � � I�lovirab�le Moment: Mallow= Mn/1.67 , . ' �
<br /> , Mn�= � 297.4 kip-in , ; ! ` Mallow= 178.1 kip-in `
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<br /> Check IVlember Bending . ; � ; � � �
<br /> , Moment in member:• Mmax= P*(A1*e1+A *e2) ! ' � ', � I'�
<br /> ' Mmax= ,170.2 ki -in i , Mmax < Mallow...� , ' OK '
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<br /> Check Member Deflection: ! ; � � .
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<br /> � Allowable Deflection: � � �aiioW= , 0.83 in , �/so ' �
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<br /> Deflection in member: �maX= P*(A1*e1^3 2*e2^3)/(3*E*I) ' � � ;
<br /> � � � � � = 0.30 in i � �max < �allow . OK
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