Is IS 5878:1970 still a valid standard?

No, it is withdrawn and has been superseded by the multi-part IS 5878 series starting with IS 5878 (Part 1):1971.

What was the main purpose of this standard?

Its purpose was to define and standardize the terminology used in tunneling to ensure clear communication among engineers, geologists, and contractors.

What is an 'Adit' according to this glossary?

An adit is defined as a nearly horizontal passage driven from the surface into the side of a hill, used for access, drainage, or exploration of a tunnel.

What is the difference between 'Lining' and 'Support'?

Lining is the permanent structure to ensure final stability and shape, while support refers to temporary or permanent measures (e.g., rock bolts, shotcrete) to control the ground during excavation.

IS 5878

: 1970

Glossary of terms relating to tunneling

CurrentRareTerminologyGeotechnical · Tunneling and Underground Structures

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This standard, now withdrawn, provided a comprehensive glossary of technical terms used in tunneling and underground excavation. It aimed to establish a common vocabulary for professionals in the field, covering aspects from geology and excavation to support systems.

Defines various terms commonly used in the field of tunneling, covering different aspects of tunnel design and construction.

Practical Notes

This code is withdrawn and has been superseded by the multi-part IS 5878 series, which are now 'Codes of Practice' rather than just a glossary.

While officially withdrawn, the fundamental definitions provided in this document are still relevant for understanding the evolution of tunneling terminology in India.

Engineers should always refer to the latest active parts of IS 5878 for current guidelines and definitions.