Laserfiche WebLink
h �as Seals CALCULATIONS FOR FREESTANDING SIGNS <br /> � easysealsmm <br /> Footing Design for Freestanding Signs and Flagpoles <br /> Structure Dimensions & Loading <br /> Design wind pressure: P= 24.7 psf <br /> Overturning Safety Factor: O= 1.5 ...FBc 1807.2.3 <br /> Sign area 1: Al= 150.0 sq ft ...tributary area 1 for each footer(e.g.sign) <br /> Height of applied force above grade: h1= 7.5 ft ...height of area 1 centroid <br /> Sign area 2: A2= 0.0 sq ft ...tributary area 2 for each footer(e.g.post) <br /> Height of applied force above grade: h2= 0.0 ft ...height of area 2 centroid <br /> Overturning Moment: Mn = P*(A1*h1+A2*h2) <br /> Mn= 27.8 kip-ft <br /> Sq/Rect Footing dimensions: B= 5.75 ft L= 5.75 ft <br /> Footing depth: d = 3 ft Soil cover: ds= 0 ft <br /> Superstructure weight: Dr= 200 lb <br /> Soil cover weight: Ds= 0 lb ...=100pcf*B*L*ds <br /> Footing weight: Df= 14878 lb ...=150pcf*B*L*d <br /> Total weight: D= 15078 lb ...=Dr+Ds+Df <br /> Soil Strength ...FBC Tables 1806.2,1819.6 <br /> Soil class: 4.Sand,silty sand,silty gravel <br /> Lateral bearing strength: Plat= 150 psf/ft <br /> Vertical bearing strength: Pbrg= 2000 psf <br /> Check Vertical Soil Bearing Pressures <br /> e= 1.84 ft ...=(P)*(Al*h1+A2*h2)/D ... > B/6 <br /> qtoe= 2*D/[3*L*(B/2-e)) ...reaction below footer at toe <br /> qtoe= 1691 psf qtoe< Pbrg OK <br /> Resisting moment due to Dead Load: My= D*13/2 <br /> My= 43.3 kip-ft <br /> Total Resisting Moment: Mtot= My/.Q <br /> Mtot= 28.9 kip-ft Mtot>Mn OK <br /> Page 3 <br />