Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Patgeotech

  1. Patgeotech

    Enhancing condictivity of soil?

    I thought I would post this qestion in the electrical forum rather than geotechnical and I would appreciate your electrical perpspectives and comments. We are working in a dry area exposed to high seasonal fluctuations resulting in high resitivity values (unacceptable) during summer months. The...
  2. Patgeotech

    66% Shelby tube recovery

    Must say that I would like to know where this 'soil engineer' studied as we have some over here that can also predict soil strength without the need for geotech investigation - sounds like they went to the same educational facility. The question why only 66% recovery is a bit of a concern...
  3. Patgeotech

    How to fill up rock-membrane annulus in 170¦C triaxial test?

    I agree with Erdbau - there should be no problem stretching the 60mm membrane. We used a metal device, which involved placing the membrane in a metal cylinder and then applying a vacuum (simple bit of suction from mouth) and then releasing over sample. To make the space up (some "undisturbed"...
  4. Patgeotech

    Organics (tree stumps) under house

    Yes, they will rot - natural groundwater not likely to be a problem then make sure runoff from roof is taken well away from house. Wetting and drying cycles will increase the rotting time. Our experience with pine trees is that they can absorb quite a bit of water out of the ground and keep the...
  5. Patgeotech

    How to talk to a Geotechnical Engineer?

    I tend to agree with CVG - meet to discuss requirements and what you need to satsfy your structural requirements. Often the geotech will know what tests work and what does not work for specific areas. The structural engineer often gets it wrong when specifying the geotech tests required (often...
  6. Patgeotech

    Reaction of Soils and Foundations to Vibration

    For dynamic modulus, one could undertake resonant column tests in the lab for your specific frequency or we use continous surface wave surveys that produce a continous dynamic shear modulus through the profile (sort of dynamic probe test in the true sense). Quite a quick test to do and provides...
  7. Patgeotech

    Rock bolting - cold weather working?

    We are involved with a range of lateral support projects, which are generally related to warm weather conditions (Southern Africa). We recently have been asked to work on a rock slope project in weather temperatures that do not get over the 0 to 2 degree Celcius mark in winter - in fact...
  8. Patgeotech

    Geotechnical Engineer Responsibilities

    I would agree with the above comments - lots of field and lab work, report compilation borehole log editing, etc is usually the area where the geotech guys learn about the various soils/rocks - I would suspect that the soil profiling/borehole logging is the next step, focussing on the test...
  9. Patgeotech

    soaking the subsoil by water before making the shallow foundation

    Certainly sounds like a collapsible soil is the issue. How deep did the voids (pin-holes) extend into the subsoils? Wetting the soils may weaken the cemented bonds, but one needs to include some form of suitable vibrational compaction to ensure the breaking of the cemented bonds (assuming they...
  10. Patgeotech

    how to tackle this type

    Well, I am also responding a bit late into this one (but had to after reading some of the comments above). I must agree with MacGyyver and a few others, the tone was a bit harsh by certain members of this forum (and they cannot see the tone of their threads and the impact it may have on...
  11. Patgeotech

    Kimberlite Rock weathering testing

    We are looking at using kimberlite rock for fill embankments and road layerworks. The kimberlite can be variable (strength, composition) depending on the parent rock it has 'penetrated' through, so some forms can contain clay minerals that are problematic while others remain competent. Can...
  12. Patgeotech

    Women Engineers....

    My graduating civil engineering class comprised of about 40% female engineers - of that 40%, I know of only 2 that stuck to civil engineering. The rest departed to married life and the financial world. Now 12 years later with two daughters, I understand that nothing beats married life and...
  13. Patgeotech

    Lack of education?

    At the end of the day degrees/diplomas are just pieces of 'paper that reflect that you taught how to think at an institution of learning (although one could argue that the thinking and the common sense part are slowly fading away). There are employers that look more into where you received...
  14. Patgeotech

    Existing Retaining Wall Problem

    Maybe drill through the wall - install soil nails and apply thin coat of shotcrete with mesh reinforcement (temporary support). Then batter 45 degrees from base of existing wall to required excavation level. Build structure (use floor slabs to prop) and then remove sections of the battered...
  15. Patgeotech

    Young Structural Engineer - Salary Expectations

    GerryBertier, 1) Reading your thread it sounds to me that your good work ethic has been recognised - you were not retrenched and that is saying something in this day and age. 2) Although your training has slowed down - due you still talk to your boss about other aspects in your work life - does...

Part and Inventory Search