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Deep Foundations
Helical Piles and Helical Tiebacks
For Enginners:
Typical Helical Specifications
Drilled Piers
Liquefaction Solved
Horizontal Cracks
Foundation Replacement
Resistive Piers
Underpinning Done Right
Mega Foundations
with Helical Piles
Solar Panel Arrays
with Ground Screws
Pipeline Anchors
Bridge Abutments
Post-tensioned Concrete
More Commercial Projects
Retaining Wall Basics
Retaining Wall Fortification
Solving Limited Access
Using EPS Blocks
Using W-beams
Drainage Systems
Excavation & Drilling
Road Washout Repair
Road Fortification
Hillside Stabilization
Challenging Hillside
Additions & Patios
Landslide Repair
Impact Walls
Avalon Supports
the Famous Rockettes
Special Hillside Issue

The road had begun to slip down the hillside and was falling apart with large cracks. Avalon fortified the road with drilled reinforced concrete piers, helical tiebacks and a reinforced concrete wall.

Design Engineer:Bob Patterson,
Patterson & Associates.
In this picture, Avalon is lowering reinforcing steel into deep drilled holes which will be poured with concrete to form drilled piers.
Here is a row of drilled piers ready for concrete.
Tiebacks are installed to grip deep into the hillside, for lateral support.
The rim of the fortification is ready to be poured, firmly attaching the drilled piers to the tiebacks.
The road is now stable; the road fortification is complete.

The edge of the road is now supported vertically with drilled piers, and the entire width of the road is supported laterally by helical tiebacks.
Avalon Structural, Inc.
181 Ridgeview Drive
Aptos, CA 95003
(831) 479-4389 (office)
Copyright © 2015
Avalon Structural, Inc.
All Rights Reserved
CA License 677116
Classifications:  B, C-8
Avalon is a general building
contracting firm and
does not employ engineers.