I got this question from a structural engineer regarding a structure supported on shallow foundation bearing on clayey soil. Can additional sliding resistance be obtained from adhesion at the contact between clay and vertical faces of the shallow foundation? As far as I know, it is common...
Currently the CBC requires reduction factors to account for group effects
- on lateral behavior when pile spacing is less than 8D (D-pile diameter)
- on axial behavior when pile spacing is less than 3D (1810.2.5).
Local and federal agencies came up with different reduction factors. Have you...
Is it possible to get the R-Value at 300 psi exudation pressure to be 0? In other words, can the vertical pressure applied to the specimen (when placed in stabilometer)be equal to the horizontal pressure? Thanks.
We determined the moisture content of frozen marine sediment samples, but the results seem to be higher than some previous testing (average about 20% higher). Is any correction that needs to be applied for salts? Or is there a standard procedure for moisture content of marine sediments? Samples...
Hi,
we need to determine the asphalt content by ignition method. We got a sample mixed by the plant per design and also we got an aggregate sample+binder separately. To determine ACF (aggregate correction factor), we have to determine the mass loss of aggregate during burning process, which...
I'm running a CU test and I'm not sure I fully understand the process of driving the air into solution.
The way I understood it is: same pressure is applied at the top and bottom of the sample and the air driven in the solution is not drained out of the sample. A colleague is telling me that we...
Any suggestions about a chemical grout to be used to seal leaking cracks in a retainig wall?
Since re-waterproofing is not an option at this time, repairs (using 3M Scotch-Seal chemical grout 5600 foam)were done in the past 3 years at as needed basis. Because this chemical grout has been...
Is there any way to estimate the effective life span of steel reinforcement in a wet environment?
Here is the problem:
The rebars are grouted and located approx 3" or less from the face of the wall.
Where the seepage through retaining wall is occurring, the seepage is through hairline...
Is it any way to estimate the effective life span of steel reinforcement in a wet environment?
Here is the problem:
The rebars are grouted and located approx 3" or less from the face of the wall.
Where the seepage through retaining wall is occurring, the seepage is through hairline...
Is there any relationship between type of concrete and water rise due to combination of capillary, absorption and various pressures? Is there a maximum distance which water will rise through concrete due to capillary? Thanks. Any reference would be greatly appreciated.
