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Shallow and Deep Foundations
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Column Footings
Isolate footings used to support individual columns; they distribute the column load to the foundation soil.
Cantilever Retaining Walls
Structures designed to hold back soil. They work on the principles of leverage and are usually made of reinforced concrete.
Friction Piles
Pile foundations that transfer loads to the soil primarily through skin friction along the sides of the piles.
Types of Deep Foundations
Transfer structural loads through weak, compressible soils to deeper, more competent soils or rock. Typically used when shallow soils can't support loads.
Mat or Raft Foundations
A large concrete slab that supports multiple columns and walls. Used where soil conditions are poor and loads are heavy.
Gravity Retaining Walls
Relies on its own weight to withstand lateral earth pressures. Generally constructed from concrete or stone.
Slope Stability and Analysis
The assessment of slopes to prevent landslides and ensure safety. Analytical methods determine the potential for movement and aid in design of stabilizing structures.
Load Bearing Wall Footings
Footings that support load-bearing walls; they spread the load over a greater area to prevent excessive settlement.
Anchored Earth Retention
A method of earth retention using mechanical anchors to provide additional support. Ideal for supporting vertical cuts during construction.
End Bearing Piles
Type of pile foundation that relies on the resistance of soil or rock at the tip of the pile to support the load.
Types of Shallow Foundations
Support structures by spreading the load over a large area near the surface. Used when soil has adequate bearing capacity.
Piled Raft Foundations
Combination of pile foundation and raft foundation, providing the benefits of both systems. Used in highly variable soil conditions.
Drilled Shafts or Caissons
Deep foundation that is constructed by drilling a hole into the ground and filling it with concrete. Used for structures requiring high capacitation or in cases of deep bedrock.
Soil Nailing
Reinforcement technique used for stabilizing slopes or excavations with nails (typically steel bars). Offers a method to retain earth during underground construction.
Geotechnical Site Investigation
The process of assessing soil conditions and stratigraphy through sampling and testing. Provides necessary data for foundation design.
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