Rock anchor uplift capacity?
Rock anchor uplift capacity?
(OP)
Was wondering if someone had any insight on determining the uplift capacity on a rock anchor?
Doing some tower work, with shallow refusal (<6 feet), structural engineer wants pier and mat foundation recs. Well, to prevent uplift in the mat, rock anchors have been recommended. The only thing, I don't know how to determine the uplift capacity. The material is basalt, so fairly porous material. No other testing has been performed, except the cores with REC and RQD over 75 percent.
I am sitting down to review "Rock Foundations" by the COE, and I am planning to buy the rock and soil anchors by the Post Tensioned Institute, but I thought I would check here to get some quick insight or opinions on determining the uplift capacity.
What is the process you do or have done?
Thanks.
Doing some tower work, with shallow refusal (<6 feet), structural engineer wants pier and mat foundation recs. Well, to prevent uplift in the mat, rock anchors have been recommended. The only thing, I don't know how to determine the uplift capacity. The material is basalt, so fairly porous material. No other testing has been performed, except the cores with REC and RQD over 75 percent.
I am sitting down to review "Rock Foundations" by the COE, and I am planning to buy the rock and soil anchors by the Post Tensioned Institute, but I thought I would check here to get some quick insight or opinions on determining the uplift capacity.
What is the process you do or have done?
Thanks.





RE: Rock anchor uplift capacity?
You get your hands on "Recommendations for Prestressed Rock and Soil Anchors" by PTI and all your questions will be answered.
RE: Rock anchor uplift capacity?
In terms of bond area, should I just assume an area? I think this is what I'm having problems with. Should I provide the uplift capacity or just the bond strength of the grout and rock interface?
And yeah, I agree, I need to buy the PTI book.
Thanks again.
RE: Rock anchor uplift capacity?
RE: Rock anchor uplift capacity?
http://www.williamsform.com
RE: Rock anchor uplift capacity?