Transmission And Substation Foundations - Technical Design Manual (TD06088E)

DESIGN EXAMPLES

Figure 7 -14: Pile Layout

Recommendation: 1. Install a SS175 Helical Pulldown Micropile a. 6” Grout Column b. Case first 12 ft with minimum 6” Nominal Schedule 40 pipe per ASTM A500 GRD B c. Helix Configuration: 10/12/14/14 d. Installation torque and length per attached installation torque vs required pile length plot Figure 7-13 e. Locate piles per attached Pile Layout (Figure 7-14) f. Estimated Embedment: 40 ft g. Minimum embedment: 27 ft (16+11)

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