Transmission And Substation Foundations - Technical Design Manual (TD06088E)

Pile Capacity: The first step in the design is to look at the soil profile and estimate a maximum ultimate axial capacity that can be attained. This is done by putting the boring into Helicap®, selecting the product line you wish to use, and helix configuration. This value is generally the maximum capacity for the pile you wish to use (the axial capacities of shafts can be found in the Drawings and Ratings section), but can be lower if the soils are not very good. You will use this value for the initial T-Z curve in the group model. In this example, we will use a SS175 pulldown pile with helical configuration 10/12/14/14. The estimated capacity is 100 kip (See Figure 7-9).

DESIGN EXAMPLES

Figure 7-9: Helicap Printout

Page 7-17 | Hubbell Power Systems, Inc. | All Rights Reserved | Copyright © 2017