- 2080 Baisakh · 2 marks
Information from preliminary exploration
Short answer
Preliminary exploration provides the types and sequence of soil strata, approximate thickness, depth to bedrock, groundwater level, general classification, rough strength from SPT, and presence of problem soils. It gives approximate bearing capacity to select foundation type and the information needed to plan the detailed exploration.
What types of information are obtained in preliminary subsurface exploration?
Preliminary exploration gives a general picture of the site. It provides:
- Types and sequence of soil strata and their approximate thickness and extent.
- Depth to bedrock or firm stratum and the groundwater level.
- General soil classification and rough strength (from SPT or hand tests).
- Presence of problem soils such as soft clay, fill, peat, or expansive soil.
- Approximate bearing capacity to select the possible type of foundation.
- Information needed to plan the detailed exploration (number, spacing and depth of borings).
✓ Answer checked by Claude Sonnet 5.5
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