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 PILES, SECANT WALLS and TIEBACKS with concrete washers (no piles). Whichever system is used by the design engineer, it should be done with cost and constructibility in mind.