UCS to Shear Strength

Question

UCS to Shear Strength

Eng_Girl (Structural)

(OP)

3 May 24 14:26

I'm not a geotechnical engineer, so I wasn' sure how to relate the uniaxial Compressive strength to shear strength. I asked an AI and it gave me the following response. Is it legit?

https://files.engineering.com/getfile.aspx?folder=e9d3f309-de11-4aa6-ac0a-5

TigerGuy (Geotechnical) · Answer 1 · 2024-05-03 17:38:32

Looks like it grabbed a page from a soil mechanics textbook for you. There's more to it, but the general concept is there. How much information do you have from the actual lab test on the soil?

Eng_Girl (Structural) · Answer 2 · 2024-05-03 18:29:58

We have no info. Although we've done investigations during other projects in the area and we know the bedrock is typically slate, and the UCS would be 25 worst case scenario. Using that relationship I found the shear strength is roughly 14 Mpa.

EireChch (Geotechnical) · Answer 3 · 2024-05-04 12:17:10

RE: UCS to Shear Strength

EireChch (Geotechnical) 4 May 24 12:17

Shear strength is half of your UCS

geotechguy1 (Civil/Environmental) · Answer 4 · 2024-05-05 22:14:38

To be clear, are you estimating the strength of rock or soil?

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UCS to Shear Strength