Revised Standard from Last Update.

1. SCOPE

This standard gives guidance in carrying out drilling observations while drilling for investigations of river valley projects. A standard proforma is given for the record of the general observations.

2. REFERENCES

The standards given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards.

4078 : 1980 Code of practice for indexing and storage of drill cores ( first revision )

5529 (Part 1) : 2013 Code of practice for in-situ permeability test: Part 1 Test in overburden ( second revision )

5529 (Part 2) : 2006 In-situ permeability tests: Part 2 Tests in bedrock ( second revision )