What is the difference between 'compaction' and 'consolidation' as per this code?

Compaction is the densification of soil by reducing air voids, typically through mechanical energy. Consolidation is the volume reduction of a saturated soil mass due to the gradual expulsion of pore water under sustained load.

How is 'Liquid Limit' defined?

It is the water content at which a soil passes from the plastic to the liquid state, as determined by the standard test procedure.

What is 'bearing capacity'?

The load-carrying capacity of a foundation soil or rock which enables it to bear and transmit loads from a structure. The code defines different types like ultimate, safe, and allowable bearing capacity.

What does 'relative density' signify?

It is the degree of denseness of a granular soil, expressed as a ratio of the difference between the void ratios of the soil in its loosest state and its natural state to the difference between its void ratios in the loosest and densest states.

IS 7717

: 1996

Glossary of terms relating to soil mechanics and foundation engineering

CurrentFrequently UsedTerminologyBIMGeotechnical · Surveying and Geotechnical Investigation

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This standard serves as a comprehensive glossary, defining the terminology used in the fields of soil mechanics and foundation engineering. It establishes standardized definitions for terms related to soil properties, classification, site investigation, and foundation design concepts to ensure clarity and consistency in communication.

Defines important terms and concepts used in the fields of soil mechanics and foundation engineering.

Practical Notes

An essential reference for writing or reviewing geotechnical investigation reports to ensure correct and standardized terminology.

Helps clarify ambiguous terms often used interchangeably in the field, such as 'compaction' vs 'consolidation' or 'density' vs 'unit weight'.

Useful for students and young engineers to build a strong foundational vocabulary in geotechnical engineering.