Calculate Helical Pier Load Online in our website

Project Information

Project Name

Project Number

Address

City

State

Zip

Data Input Fields

Enter the desired pier load excluding safety factor

Enter the diameter of the first helix

Enter the diameter of the second helix

Enter the diameter of the third helix

Enter the factor of safety

Enter the size of the pipe

Enter the pile spacing in feet


Project Name:		Project No:
Address:		City:
State:		Zip:
Results
Symbol	Description	Value	Unit
T	Installation torque		Ft-lbs
Qa	Allowable load (with FS)		lbs
Qult	Ultimate load (without FS)		lbs
N60	Blow count
POD	Pipe outside diameter		in
Kt	Empirical torque factor		Ft
FS	Factor of safety
P	Total live load		lbs/ft
X	Pile spacing in feet		ft
H1	Helix 1 diameter		In
H2	Helix 2 diameter		In
H3	Helix 3 diameter		In
A1	Helix 1 area		sq ft
A2	Helix 2 area		sq ft
A3	Helix 3 area		sq ft
Ah	Sum of helix area		sq ft
c	Soil cohesion		psf
Nc	Bearing 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 = (N60 / 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.