Beam & Plate, Sheet Piles, Tiebacks, Soil Nails & Secant Piles

Nicholas Canyon Rd. sheeting

Sheeting being installed at Playa Vista, California, using two Mobilram units.

SHORING (aka. Geosupport shoring)   takes many forms of construction techniques from supporting open trenches with shields to vertical cut shoring walls.  The most widely used vertical shoring walls use soldier piles (usually HP or wide flange beams) with lagging.  Lagging can be wood, shotcrete, pre-cast concrete panels or steel plate.  For walls over 15 feet, the addition of tiebacks, pipe bracing OR dead men is frequently used.   Other common shoring systems include SOIL NAILS, SHEET PILING, SECANT WALLS and TIEBACKS with concrete washers (no piles).  Whichever system is chosen by the design engineer, it should be done with cost and constructability in mind. 

Temporary shoring system at Diemer Filtration Plant in Yorba Linda, California, for slope repair project. Tiebacks, soldier beams and shotcrete lagging comprised the shoring system designed by Cefali & Associates.

Secant Walls eliminate problems for constructing in difficult ground conditions, like caving and water seepage. Also, Secant Walls can be used as permanent walls for subterranean parking structures and basements, at considerable cost savings.

Temporary shoring using only "slim hole" tiebacks with concrete washers (no soldier piles). August Construction installed the first Caltrans project of this type.

Soil nails being tested prior to shotcrete facing at the site of the Oakland Federal Building