Pl check the following BIS Standard, if it works for u.

https://ia803005.us.archive.org/32/items/gov.in.is.2720.39.2.1979/is.2720.39.2.1979.pdf

The main reason that you cannot find such standards is that there are no well established or widely applicable in-situ direct shear tests for such soils. The ways to determine the shear strength mainly of clayey soils in-situ would be either the Cone Penetration Test (CPT) or the Vane Shear Test (VST).

Hello,

I have been working in that arena.

To my knowledge, there is no such established standard(s). However, you could consider these papers (among others) for conceptual inspiration :

- Jain et al., (1974)

- Matsuoka et al., (2001)

- Oyanguren et al. (2008)

Thanks!

Best Regards,

Gilbert

Thanks a lot Atul Kohli , Thomas Makedon , Gilbert Girumugisha for all the help. They all came in handy.

Best regards,

Hamed