SS175 (1.75 in size Square Solid Section) with 8''-10''-12'' Helixes
A. Project description
This example presents a detailed example for calculating the ultimate axial capacity of a helical pile according to Vesic 1974 and Meyerhoff/Hansen method. Table 1 below presents assumed soil properties, Table 2 summarizes the soil stratigraphy, while Table 3 describes assumed helical pile properties.
Table 1: Soil properties
Table 2: Stratigraphy (Boreholes)
Table 3: Helical pile properties
Soil Properties and Model in HelixPile
Pile Section Properties and Helix Configuration
B. Ultimate bearing capacity calculations – Individual plate method
B1. Manual calculations
Effective soil stress:
The general bearing capacity equation is:
Calculations for each plate and for the tip:
Plate 3
Plate 2
Plate 1
Tip
Table 4: Bearing capacity for each plate/method
B2. Verification using HelixPile Software
The following Figure presents the software calculated Capacities with each method:
Figure: The plate results on the screen – Vesic - Meyerhoff/Hansen method respectively.
The following table summarizes the hand calculations and the software calculated capacities with all methods:
Table 5: Individual Plate Method - Results Comparison
Book A free web presentation:
