Hi,
After pile driven into soil, when is the appropriate time to conduct the pile load test (maintained load test & pda test)
1. Is the resting period for skin friction and end bearing pile is different? I read that some suggesting straight away, some said 3 days, 2 weeks and even 1 month.
2...
Hi,
Thank you GeoPaveTraffic.. yes agreed on the rant. I'm a junior n just assigned with this case with only UU test data.
i assumed now 1D-conso and CIU test results are important for road failure/settlement for road that had been constructed long time ago.
thank you Retrograde
So if the road was built for almost 8 years, then i guess the right way is to use the c' and phi' value for the stability analysis. Even if it is clayey material?
The road seems to have settlement issues since open to public 8 years ago, can we assume that the PWP already...
Hi,
Can i use the cu value (phi=0) obtained from the UU test for slope stability analysis instead of using c' value from CIU test?
If no, why it is not possible to use the undrained strength for slope stability calculation.
I have road embankment failure/road foundation failure and only UU...
Thank you Ron! that helps!
How about the area, shall the diameter follow the standard BS 49.65 +/- 0.10mm that will give nominal area f 1935mm2? The supplier can only supply with slight different of +/- 49.85mm that give approximately area of 1953mm. Does this affect the readout that much or...
Hi,
We are trying to get a CBR penetration machine. The supplier sent us 2 penetration plungers to choose from;
1. 250mm long plunger
2. 150mm long plunger that is heavier than the longer plunger.have not weigh them but their weight are obviously different when holding them.
The cross section...
Hi,
Reading the last two posts made me have no conclusions of my questions earlier on.
my office try to gather some info before buying complete set for CBR equipment. cbr test is one test that we shall comply with for material used in construction here.
1. I wanted to know the significant of...
Hi,
I have questions regarding CBR test for subgrade /subbase/road base material that include compaction stage(sampel prep) - soaking stage - peneteration stage.
1. Stated in BS that the during preparation of sample/compaction test, solid base plate shall be used, then change to perforated...
Thank you GeoPaveTraffic for ur explanation. it helps a lot.
1. so laminated and interbedded can be used in both soil and rock?
2.i usually understand when i put the layer name as "medium dense gravel with light brown sandy Clay"<----- (i simplified this name just for an example), it would be...
Hi all,
Whats the difference between laminated and interbedded when used in borehole log's description.
Is it laminated silty clay is the same meaning with interbedded silty clay?
Then, if the layer is medium dense gravel with light brown sandy Clay ; should it be written as medium dense...
Hey fattdad i read about that too. but sometimes i include the skin friction value as well when the pile set on weak rock with RQD=0%.
Oldestguy, are you implying that i should only stop in stiff clay (stronger layer), but keep in mind the mobilised skin friction will be lower than the computed...
Hi oldestguy,
I made up the example. However, i'm sort of calculating a skin friction pile right now. So i need a good insight for my calculation and overall understanding of the skin friction pile. The borehole shows stiff clay overlying the loose sand layer. however, above the stiff clay...
Hi,[shadeshappy]
if someone could help me to understand this problem better.
1. For example if i have 8m stiff clay with underlying 10m loose sand.(only example)
The pile will be mainly on skin friction. So let say i want to terminate the pile 9m b.e.g.l (including 8m into stiff clay and 1m...
hi GeoPaveTraffic,
Yes i agree with you on the soil type.
However, do we still need to take final set for friction pile? For example, the pile will be terminated in medium dense sand not on rock.
Hi,
Can someone brief me the criteria of pile set and pile load test for friction pile and end bearing.Please correct me if im wrong as well.
Friction pile - no set taken during driving, wait for at least 2 weeks for dissipation of negative pore water pressure n mobilisation of the friction...
Hi,
Can someone brief me the criteria of pile set and pile load test for friction pile and end bearing.Please correct me if im wrong as well.
Friction pile - no set taken during driving, wait for at least 2 weeks for dissipation of negative pore water pressure n mobilisation of the friction...
BigH, may i know where is KT? ;)
what i mean is about the lab CBR is the test that we will run for giving approval of the raw material used for road base/ sub base/ or for other purpose. and the strength of the layer on site (i.e compaction) is assessed by the FDT or DCP. At least that what we...
BigH, yes here in Malaysia the lab usually do the soaked 4 days condition, but seldom CBR on the site (because that what the specification requirement), they usually confirm the compaction using FDT or DCP.
But i read in the BS1377-4 stated for calculating the dry density from the CBR that used...
