Transmission And Substation Foundations - Technical Design Manual (TD06088E)

When looking at L-pile results, the goal is to have the deflection below what is allowable for the design and the moment less than 0.6Mp. These results show that 2-RS8625.188 wall pipes will carry the lateral load with an estimated 0.07” deflection and 20 kip-in of moment. With the intended pipe shaft determined, Helicap® is now used to get a helix configuration and estimated installation depth for both the center piles as well as the guy anchors. Figure 3 is the Helicap® report for the center piles.

DESIGN EXAMPLES

Figure 7-22: RS8625.188 Helicap® Report

For the guy anchors, with the ultimate capacity known (FS*working), it is possible to design the anchor using Helicap®. See Figure 7-23 for results.

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