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Pole Footing Design <br />Column Size= <br />Location= Flagpole <br />bfooting =3.0 ft [footing diameter] <br />qa= 267 psf /ft [Allowable lateral soil-bearing pressure per Geotechnical Report] <br />qa,max= 2400 psf [Maximum Allowable lateral soil-bearing pressure per Geotechnical Report] <br />Satisfy 1806.3.4? Yes <br />design qa= 534 psf /ft <br />h= 30.00 ft [height from ground surface to point of application of P] <br />Equiv. Lateral P=284 lbs [ASD Level Applied Lateral Force at midheight of Column] <br />Mg=5059 lb-ft [Moment in the post at grade: Pxh] <br />Axial PV= <br />A. NON-CONSTRAINED <br />Embedment depth required to resist lateral loads: <br />assumed d= 4.00 ft OK <br />S1=712 psf [Allowable lateral soil-bearing pressure based on d/3] <br />A= 2.34P/(S1b)=0.31 ft <br />d= 3.35 ft [Required depth, d= 0.5A{1+(1+4.36*h/A)1/2 } ] <br />Use depth =4.00 ft <br />PROJECT <br />CLIENT <br />LOCATION <br />ITEM <br />SHEET NO. <br />PROJECT NO. <br />DATE <br />ENGINEER <br />St. Barbara Catholic School <br />Flagpole Footing Design <br />- <br />C24-0036 <br />3/7/2025 <br />ALS <br />H:\C24-0036 - DLR - St. Barbara\Engineering\Misc\Flagpole Pole Footing.xlsx <br />BRANDOW JOHNSTON, INC structural + civil engineers Calculation p1