Geotechnical Testing: Proof is Possible, but Sometimes It Hurts
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- čas přidán 12. 12. 2018
- Geoff Hebner of Padstone Geotechnical Engineering returns to run a simple test on the dirt before pouring concrete, and Corbett finds out he’s not as slick as he hopes.
Good shout, I like the explanatory views and what is gonna be done in compacting the soil and the reason why the windows or doors are not opening. Etc.....Excellent, now I know why a property which has excess ground movement.
One of the things that I learned along the way is that over-engineering stuff at the beginning of a project is often cheaper than having engineering consultants come in.
A common procedure in some areas of the country due to type of soil etc.
You are lucky to count with the knowledge of a soil consultant.
Thanks guys. I just started a job as a field tech. Lol, I already use a 5/8ths piece of rebar to use as my rod to determine the footings.
I received a lot of good information from this video thanks for taking the time to share it with us.
Great video. I need that tool in my box. Thanks for sharing.
My house, in virginia would not stop moving. Drywall cracking, door sticking, cabinets pulling away from the wall were the indications something was wrong, it's the soil. The house was built on expansive soil, having an uplift pressure of 900lbs per sq ft, one level ranch on full basement 1600sqft. The builder and building dept failed to follow the expansive soil policy. 1.5 years of battling the building dept and builder and still not done with the repairs. My geotechnical firm designed the removal of the backfill, replace with gravel/ topsoil and 19 helical piers. By the time it's over, the cost, estimated $50k. The only way to tell if the soil(clayey soil) is good; have the soil tested for expansiveness. As far as the video goes, the point is; verify the foundation soil, to do that you need a qualified geotech to examine the soil, and it shows that.
I worked with Geoff on a large retaining wall south of Atlanta. Great guy!
Preecise recomendation to set a solid bed of rocks prior to proceed with the foundation👍👍
So glad you’re sharing the real world. Lots of knowledge to be gained by understanding the details.
Nothing worse as a consultant geotech to tell them the bearing soils are bad after they placed rebar within the formwork. Sucks but thats why they hire us
Nice work. Now couple problems: 1) You have very tricky spot for house build, as part of house is siting on rock and some parts are siting on clay based soil and these soils moves differently. Clay based soils moves as water content changes. 2) Its common practice to use gravel to boost soil load bearing but you have to compact the gravel with compacter and also use something to fill voids between gravel, or these voids will fill naturally and the footing will sink a little over course of time by volume of voids. PS English is not my native language.
Nice work my friend
Are there some tests that can be done by yourself before to call a specialist. Like for the soil health assestment?
I have done many basements and see that you are there every day with the bad weather . I really do like the fact that you are out there kicking the shit with the workers and taking on the tough results from learning the proper way . Radon has been a factor in my stint as a Professional Laborer because of buried trees and ? Now with the form a drain you said it will be vented through the roof? My first thought was? Are the drains running into a crock with a sump pump? in the house or are they flowing with gravity away from the house and if it does run into a crock how does vent through the crock ? I have only vented for radon on the outside of a dwelling not inside . Still learning ! after retirement.
I have seen push rods with gauges for soil testing, takes the guess work out.
definitely better to fix it now than later
how much do geotechnical engineers charge for doing the foundation soil test bores which should include wet and dry density, compaction, moisture, bearing capacity and as you say "quantifiable high performance ."
Was that top layer of soil originally tested prior to laying the forms down?