Dear all,
I have this doubt at the office. We considered an internal friction angle for a liquefied sand, let’s say 28 degrees. The residual internal friction angle (after liquefaction) must be a lower value, let’s say 10 degrees.
Structural engineers asked: why is that possible since...
I need to design a floating foundation for a WWTP. The bottom level of the mat if already set by the hydraulic design. The excavation needed is 6 meters (20 ft) deep. I need to check the limit states (failure and serviceability) of the foundation.
However, while calculating the increase in...
We are working on a project consisting of a trapezoidal open channel. Currently, the cross section is trapezoidal but it is not uniform along this channel. The height of the slope is between 2 - 3 meters (7 - 10 ft).
The project consists in excavating 1.5 to 2 meters (5 - 7 ft) deep, to increase...
I am working on a Liquefaction analysis and I don't know how to get a max / g.
In my country, we have a local code, which is similar to ASCE 7-05:
Site Class is E.
Zone factor is 0.40
Fa is 1.0
I appreciate your help.
I will be analyzing the slope of an embankment over soft clays. It has been probably 2 years since the embankment was built and it shows many cracks -probably because it has slid a little bit- and I believe the clay under the embankment may have reached its residual strength. Can I perform a...
I am running a model on Ensoft Group. When adding the vertical loads, should I consider only the load of the superstructure?
r should I add both superstructure and pile cap (or mat) above the piles, considering both kind of loads will be applied to the piles?
I was searching on the manual but I...
Hi all,
I am analyzing a compensated foundation and I have this question:
When calculating the stress of the soil to be excavated, should I use the total unit weight or effective unit weight?
The data I have is:
SOIL PROFILE:
from 0 to 2 m depth, a granular fill
from 2 to 10 m depth, soft...
Hi all, I'd like to be clear when analyzing driven piles under seismic loads.
First, I calculated the axial capacity of an individual driven pile with APILE. Let's say I need 8 piles for that structure.
Then, I need to analyze an indiviudal pile with LPILE. At the loading menu, should I divide...
Hello guys,
I need some help on this project. I have attached the an image to understand it better.
I have this concrete structure that will support a 2-lane highway, 1-way per direction. The client asked to do the geotechnical investigation and calculate the bearing capacity of the strip...
I have an unsaturated MH sample, obtained from above the groundwater level, and I need to have consolidation parameters for design. We normally run consolidation tests of samples under the groundwater level (theoretically fully saturated), so the primary consolidation process takes effect when...
We have to do the geotechnical analysis for a seismic simulator (vibrating table) - similar to the one in the picture.
It will be founded on shale and sandstone. There is also rock underneath.
I am going for a mat foundation. Is there any recommendation anybody can give me? What method would...
The company I'm currently working for has been called to do the Geotechnical design of many monopoles in the city. They gave us a sample study (they have worked like that in other countries) and wanted us to do something similiar here.
The requirements were:
-Do SPT continously up to 6 meters...
Hi all,
I need to calculate the bearing capacity of a spread footing.
B= 2 ft.
L= 19 ft.
Df= 1 ft.
The underlying soil is mainly stiff clay.
The bearing capacity, using Terzaghi's theory, is kinda low. I can recommend using a geosynthetic as reinforcement, after replacing 0.7 ft. with...
Hi,
I'd like to buy a software for calculating bearing capacity of shallow foundations to provide a better report presentation for my firm.
The software MUST consider multilayer analysis. If it can make analysis using Geosynthetics, it would be perfect.
I've heard about the one provided by...
Hi, this is my first thread here :)
I need to analyze the soil stability of this slope. There's a 30 KM road just next to the slope (at the bottom), and I need to stabilize it. When it rains it fails and some of the soil falls to the road. Additionally, the rain destroys the pavement. Please...
