Bi-directional Testing

To read the articles in their entirety, click on an article title

Single Level Bi-Directional Static Load Test

The O-cell is a hydraulically driven, high capacity, sacrificial loading device installed within the foundation unit. As the load is applied to the O-cell, it begins working in two directions; upward against upper side shear and downward against base resistance...

Multiple Level Bi-Directional Static Load Test

Single or multiple O-cells® can be arranged on multiple levels to isolate strata of interest. A zone of interest can be isolated within the 2 levels of O-cells and zone specific data can be retrieved from mobilzing this section. The...

Drilled Shafts, Bored Piles and Caissons

The O-cell® is used in production (proof tests) and non-production (preliminary test) piles either attached to the pile/shaft’s reinforcing steel cage or placed using a steel beam carrier frame. Multiple O-cells can be used and placed on the same...

Augercast (ACIP) Piles

O-cells® have been successfully installed in Augercast (ACIP) piles to depths exceeding 150 feet. Installation of the O-cell does not change the typical Augercast (ACIP) construction method, however, a modified grout mix is recommended to ease placement into the...

Slurry Walls / Barrettes

Loadtest has been engaged on several barrette projects and has developed an efficient, cost effective method for full scale static load testing of barrettes using the O-cell method. Barrettes are often used as a single load carrying foundation element capable...

Driven Piles

Specially constructed O-cells® can be attached to driven piling. Load testing can be performed on prestressed concrete piles, steel pipe piles and cylinder piles. For driven piles, a rugged design ensures that O-cells driven to refusal conditions perform as designed....