Helical and Hydraulic Piers

ICC-ES (Formerly ICBO)

• PFC – 5996 (Issued March 1, 2004)

• ICC Evaluation Service, Inc.• National Evaluation Service, Inc. • BOCAI Evaluation Services• ICBO Evaluation Service, Inc.• SBCCI Public Service Testing and Evaluation

Services, Inc.

• Division: 02 – Site Construction• Section: 02465 – Bored Piles

Topics Discussed

• Pre-Construction Piles

• Caisson Replacement

Helical Piers - Shaft

Helical Piers - Connections

Push Pier

Push Pier - Components

Bracket

Expansion Ring / Soil Plug

Hydraulic Cylinders

Driving Head

Guide Sleeve

Pre-construction Piles

Pre-construction Piles

Case Studies

• Apache Gold CasinoBecause of known soil issues and existing structures experiencing settlement issues the engineers recommended that all new structures on this property be constructed with a deep foundation system using helical piles with grade beams.

It was anticipated that a pile depth of 45’ would be needed to reach solid strata but in some locations a depth of up to 63’ was needed before reaching solid strata.

Apache Gold CasinoWhen the required depth was reached the piles were cut off 4” above the bottom of the grade beam trench and the pile caps were installed. It is now ready for the rebar to be tied to the pile caps and the grade beams to be poured.

Aqua Tots Swimming Pool Addition

This new build out required the addition of a swimming pool inside the existing structure. The challenge was how to support the load bearing wall and interior column during excavation for the pool.

Aqua Tots Swimming Pool Addition

The solution was to install 7 hydraulic piers on the exterior wall footing and 4 helical piles to carry the load of the column footing.

Manufacturing Renovation

This structure was being remodeled to accommodate the addition of new heavy equipment. It was determined that to support the additional load a 16” slab with a deep foundation system would be required. Helical piers were selected as the best solution.

Manufacturing RenovationHelical pile being installed

Click on picture to start movie clip

Manufacturing Renovation100 Helical piles were installed in a pattern to carry the load of the new heavy equipment and not conflict with the new plumbing that had been installed.

Caisson Replacement

Hotel Indigo ScottsdaleThe hotel was adding a balcony to expand the bar area. The original design called for caissons to be installed to carry the load of the columns that would support the structure.

The steel cages had been delivered to the site but when the drill rig arrived they found that there was not enough room to get the drill in.

Hotel Indigo ScottsdaleArizona Ram Jack was contacted to help provide a solution. Our in house engineer worked with the engineer of record to design a system using helical piers to replace the caissons.

Hotel Indigo Scottsdale

The small equipment needed to install the helical piles was able to get into the tight areas by the building and around the pool.

Caisson ReplacementAfter the piles had been installed and cut to the required height from the bottom of the footing the pier caps were attached . The area is now ready for the rebar cage to be attached and the concrete poured.

Caisson ReplacementWith the footings poured the columns were installed and the structural is up and ready for the deck. Once again Arizona Ram Jack was able to provide a better solution

Questions?