Flagpole Base Design Calculator

Civil Engineering & Design Applications

This calculator will determine the Flagpole Base Design requirements per IBC and UBC

Flagpole Footing Design Based on Chapter 18 both IBC & UBC
       INPUT DATA & DESIGN SUMMARY                    
IS FOOTING RESTRAINED @ GRADE LEVEL ?   (1=YES,0=NO)
  P
LATERAL FORCE @ TOP OF POLE  P =
HEIGHT OF POLE ABOVE GRADE H =
DIAMETER OF POLE FOOTING B =
  H
LATERAL SOIL BEARING CAPACITY S =
ISOLATED POLE FACTOR (IBC 1804.3.1 or UBC note 3 on Tab 18-I-A)  F =
FIRST TRIAL DEPTH D =
  D
Units ? ( English = 1, Metric = 2 )
       ANALYSIS
LATERAL BEARING @ BOTTOM :
LATERAL BEARING @ D/3 :
, FOR NONCONSTRAINED
REQUIRD DEPTH :
, FOR CONSTRAINED
NONCONSTRAINED
CONSTRAINED
LATERAL FORCE @ TOP OF POLE
   P     =>
HEIGHT OF POLE ABOVE GRADE
   H     =>
DIAMETER OF POLE FOOTING
   B     =>
LATERAL SOIL BEARING CAPACITY
   FS    =>
  1ST TRIAL         TRY D1 =>    
      LAT SOIL BEARING @ 1/3 D      S1    =>    
      LAT SOIL BEARING @ 1.0 D      S3    =>    
      CONSTANT 2.34P/(BS1)      A     =>  -    -    
    REQD FOOTING DEPTH
   RQRD D =>
2ND TRIAL :
   TRY D2=>
      LAT SOIL BEARING @ 1/3 D      S1    =>    
      LAT SOIL BEARING @ 1.0 D      S3    =>    
      CONSTANT 2.34P/(BS1)      A     =>  -    -    
    REQD FOOTING DEPTH
   RQRD D =>
3RD TRIAL :
   TRY D3=>
      LAT SOIL BEARING @ 1/3 D      S1    =>    
      LAT SOIL BEARING @ 1.0 D      S3    =>    
      CONSTANT 2.34P/(BS1)      A     =>  -    -    
    REQD FOOTING DEPTH
   RQRD D =>
4TH TRIAL :
   TRY D4=>
      LAT SOIL BEARING @ 1/3 D      S1    =>    
      LAT SOIL BEARING @ 1.0 D      S3    =>    
      CONSTANT 2.34P/(BS1)      A     =>  -    -    
    REQD FOOTING DEPTH
   RQRD D =>
5TH TRIAL :
   TRY D5=>
      LAT SOIL BEARING @ 1/3 D      S1    =>    
      LAT SOIL BEARING @ 1.0 D      S3    =>    
      CONSTANT 2.34P/(BS1)      A     =>  -    -    
    REQD FOOTING DEPTH
   RQRD D =>

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