Helical Pier Load Calculator


Project Information


 

Project Name:

Project No:

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Results

Symbol
Description
Value
Unit
TInstallation torqueFt-lbs
QaAllowable load (without FS)lbs
QultUltimate load (with FS)lbs
NBlow count
PODPipe outside diameterin
KtEmperical torque factorFt
FSFactor of safety
PTotal live loadlbs/ft
XPile spacing in feetft
H1Helix 1 diameterIn
H2Helix 2 diameterIn
H3Helix 3 diameterIn
A1Helix 1 areasq ft
A2Helix 2 areasq ft
A3Helix 3 areasq ft
AhSum of helix areasq ft
cSoil cohesion factor
NcBearing capacity factor
Formulas

Installation torque: T = (Qult / Kt)

Ultimate load: Qult = Qa FS

Ultimate load capacity: Qt = (A1 + A2 + A3)cNc

Installation torque: T = (Pw FS) / Kt

Working pier load: Pw = P in (lbs/ft) X in (ft)

Soil cohesion: c = (N / 8) 1000

The figures above are based on general and theoretical calculations from various formulas. The above results are for reference only and are provided for general informational purposes. You should not solely rely on the above referenced results. On-site field tests should be conducted to verify actual load capacities. You should always consult with a professional engineer for the final design and the installation parameters based on the individual project and site conditions. TMG Manufacturing cannot certify or warrant the accuracy of the above results and assumes no liability pertaining to these results.