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l <br /> " Easy��a� CALCULATIONS FOR FREESTANDING SIGNS <br /> easyseals.mm <br /> Hollow Structural Pipe in'Bending <br /> Allowable Stress Design per 2010 AISC Spec for Structural Steel Buildings <br /> Material Properties <br /> Yield Stress,A53 Grd B Steel: Fy= 35 ksi Safety Factor= 1.67 Per Section 63.4 <br /> Modulus of Elasticity: E= 29000 ksi <br /> End Supports: Cantilever <br /> Member Properties ANSI 4"Schedule 40 steel pipe <br /> Nominal size: 4" diam - Sch 40 <br /> Outside Diameter d = 4.5 in Moment of Inertia: Ix= 7.2 in' <br /> Wall Thickness t= 0.237 in Section Modulus: S= 3.21 in <br /> Deflection Limit: Defl = L/80 <br /> Design wind pressure: P= 24.7 psf <br /> Sign area: A1= 60.0 sq ft ...tributary area for each post(e.g.sign+post) <br /> Eccentricity of applied force: e1= 3.0 'ft ...distance to area centroid(weighted avg hl,h2) <br /> (1):Yielding Limit State <br /> Mn= Fy*S Allowable Moment: Mallow= Mn/1.67 <br /> Mn= 112.5 kip-in Mallow= 67.4 kip-in <br /> Check Member Bending <br /> Moment in member: Mmax= P*A1*e1 <br /> Mmax= 53.3 kip-in Mmax < Mallow... OK <br /> Check Member Deflection: <br /> Allowable Deflection: Dauow= 0.45 in i_/80 <br /> Deflection in member: Amax= P*(A*e-3)/(3*E*I) <br /> Amax= 0.11 in Amax < Aallow ... OK <br /> Page 4 <br />