As part of the connected companies of Keller, Seaboard Foundations offers the full range of geotechnical techniques to our clients for their transmission line projects.

Sfi Anchors


Common Uses

  • Tiedowns to support monopole and self-supported lattice towers in hard rock
  • Tiedowns for Guyed V structures

Anchors use high-strength steel bars or steel strand tendons to transfer tension loads. Our sister company, Hayward Baker, designs and installs anchors either alone or as part of a turn-key foundation or tiedown solution.

See Hayward Baker's anchors page for more information.

Sfi Helical Piles

Helical Piles

Common Uses

  • Substations, transformers, A-frames, high buses and circuit breakers
  • Transmission towers, lattice structures, H-frames, monopoles and guyed structures
  • Telecommunication towers
  • Distribution pole base

Helical piles, also known as helical piers, are constructed using steel shafts with helical flights. They are quickly becoming the foundation of choice for electrical transmission lines throughout North America. Our sister company, Cyntech, has provided innovative and cost-effective helical pile installation since 1981.

See Cyntech's helical piles page for more information.

Sfi Micropiles


Common Uses

  • Limited access foundations (by land and/or by helicopter)
  • Severe hard rock conditions in lieu of drilled shaft foundations
  • Limited overhead conditions (micropiles can be installed with as little as 8ft of headroom)

Micropiles are constructed using high-strength, small-diameter steel casing and/or threaded bar. As part of the Connected Companies of Keller, Seaboard Foundations can assist with micropile design-build solutions.