An embedded retaining wall is either temporary or permanent structure to take up support in an adjacent ground and support the soil from any collapsing and ground movement arising from the effects of excavation in front of embedded retaining wall (where the wall is use to basement and foundation structure). The wall may also be supported by structural members such as ground anchors, props and berms.
TYPES OF EMBEDDED RETAINING WALL:
I. Contiguous Pile Wall
II. Secant Pile Wall
III. Soldier Pile Wall
IV. Sheet Pile Wall
V. Diaphragm Wall
CONSTRUCTION OF THE RETAINING WALL:
a. Driven Piles
b. Bored Pile Walls
c. Diaphragm Walls
CONTIGUOUS PILE WALL
• Comprises a series of bored cast-in-place piles with gaps between piles.
• Construction of walls is by means of CFA or a traditional bored piling rigs with temporary casing as required.
• Cheapest form of concrete piled wall.
SECANT PILE WALL
• Acts as water retaining walls.
• Comprises a overlapping of piles.
• The primary (female) piles are cast first and un-reinforced while the secondary (male) piles are subsequently installed to intersect the primary piles.
SOLDIER PILE WALL • Comprises a series of vertical steel beam installed into the ground at intervals, which support a retaining wall made up of horizontal laggings.
• The horizontal laggings may consist of concrete, steel or timber.
• Can be installed either driven into place or placed in bored cast-in-place piles at centers typically 1 meter and 3 meters.
SHEET PILE WALL
• A row of interlocking vertical pile segments driven to form an essentially straight wall.
• Suitable as water retaining walls.
• Can be installed either driven into place or placed in bored cast-in-place piles
• Panels will normally be kept full of drilling support fluid to prevent collapse of trench side.
• Excavation is carried out by grab, using chisels to break up obstruction, or by reverse circulation