Site Investigation

1
Site Investigation
2
Soil Boring Equipment

• SPT Test
• Discontinuous samples
• Soil boring log data obtained

3
Cone Penetrometer
4
CPT - continued

• CPT is faster and more cost effective than
  conventional drilling and sampling.
• A complete, real time profile is created from
  ground surface to depth of penetration.
• CPT is a minimally invasive approach to site
  characterization.

5
Seismic CPT
6
Vane Shear Test
7
Soil Boring Log

• Soil strata information
• Groundwater table level indicated
• Important for design of building foundations

8
Problem Soils - Karst Terrain

• Sinkholes usually develop in limestone terrains.
• Huge cavities will appear below or at ground
  level due to dissolution of CaCO3 by H20

9
Problem Soils - Loose sands

• Liquefaction of soils during earthquakes

10
Problem soils - Soft clays

• Landslides
• Foundation of building difficult to construct
  because it has very minimal shear strength