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     =>
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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