hello all,
Somebody asked me what is the covergence measurement use for what purpose and what is the alert level should be.
I am not really sure what is the correct answer and hope you guys can help.
My preliminary answer is
Purpose:
1) check the deformation and stability of the tunnel;
2)...
Hello all,
I have to carried out the 8hrs strength test of the shocrete as the contract specification. As the time is tight, it is not possible to send the sample to laboratory for testing.
As such, I could like to ask is there any insitu testing method can do for that?
The specification...
hello all~
I have an question on the Cement grout properties for Rock Dowel in tunnel support.
As I know that is common practices that the hole was grouted before the installation of dowel. To doing that the grout have to be viscosity enough or otherwise the grout will flow out from the hole...
To calculate the bolt length for tunnelling support, I understand that the equation form Barton can be used. However, I found there two versions of the equation, which confuse me. I wonder any of you could know which is the correct one.
1) bolt length = (2+0.15B)/ESR
2) bolt length = 2 +...
Hello everybody,
I am facing the problem of checking the Secondary Compression(or called Secondary settlement/consolidation)calculation. The reason of checking is due to the secondary is seems too large, so that the settlement could excess the requirement during the maintainance period.
I had...
Hello Everybody,
I am working on a Highways Project which inculding Embankment. As the ground contain thick clay and the embankment are high, part of embankment are decided to constructed with piled foundation. And this raise the question......
For those embankment with no piled foundation...
