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...
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...
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"...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
Hi Rukia,
What type of soil did you do the DCP test in - if soil with cohesion then the results should be read carefully. What length DCP did you use and did you visually observe the in-situ soil?
A little late with my comment - why not introduce soil nails onto your slope? or tieback wall at the toe of the slope?
Your conhesion is a bit on the high side - if you have profiles on the rock, I find that Roclab (by Rocscience) is a good way to check your soil parameters. Could be handy...
Following all the seismic activity the world has experienced so far this year, I wanted to put the following questions out there to see what the different opinions are. If no seismic or dynamic soil properties are available, would you still design foundations/structures based on static test...
We do not use the word 'conservative' in our geotech reports because of how other professionals perceive the word.
We typically use 'recommended' or 'it is our opinion' or if insufficient testing was undertaken to derive the parameters then we start the sentence as 'Although a limited amount...
Sounds like you are not liking Company A - would suggest you present the paper (taking into account some of the comments above in terms of presentation) and use the opportunity to meet other professionals from other companies and perhaps a new opportunity will open up at the presentation. And...
