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Calculating Heave over a tunnel/underground pipe installation

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ac4u2nv

Geotechnical
May 30, 2013
52
Dear all, im hoping someone can help me.

Were about to progress an under ground drain installation (~12 inches) beneath a carriageway and the client has requested the working depth to be at 1.2m bgl. This is extremely shallow, and id like to enquire about the following:

1. Is heave at he surface a potential risk
2. If it is how can i calculate it (we have no in office software- all we have is lab data from the ground investigation and calculator!! so any formulas or documents you can guide me to would be greatly appreciated
3. If Heave is a risk how do i mitigate it?

The soil from what i understand is fairly dry.

Thank you very much

 
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