Hi everyone:
-we are building a tunnel in west coast that is underlined by liquefiable soil deposit. We need to estimate settlement-induced liquefaction under the tunnel. The current formulas are only able to estimate volumetric strains . Based on my understanding, these are applicable for...
thanks for reply guys..the hydrostatic case is clear now. One more thing should not we account for hydrodynamic forces which become significant under flooding situations. Would anyone know sources for quantifying hydrodynamic forces affecting buried pipes ( say 1 m depth below river bed) at...
Thank you for reply. I attached a conceptual sketch showing the problem . The Idea is to get the uplift force at the base of the pipeline which is buried under 1 m of river bed and has 10 m height of water above it. I am trying to compute the uplift force under the pipe . Thank you for help...
Hello everone.
I have a pipe buried at 3 ft below river bed at stream crossing. The water level is 10 m above river bed. When checking if the pipe is going to be uplifted under hydrostatic water pressure, I noticed that in literature when calculating upward hydrostatic force under pipe, only...
Thanks all .
SNORGY: it is a good approach to linearly interpolate between using the minimum air temperature and the frost depth.
I guess the interpolation should be between the minimum ground surface temperature (not the air temperature and the frost depth). I think one should have accuracy...
Hello,
For gas pipe (buried at around 5 to 6 ft), I am trying to determine the Minimum Design Temprature for toughness purpose. I am assuming that minimum designTemperature of the pipe can be the same as the minimum ground temperature at that depth (5 to 6 ft).
The question is how to obtain...
Hello,
I am trying to get the transitionTemperature under Static conditions (for analyzing fracture initiation or pressurized vessels) from the transition temperature obtained from traditional Charpy_CV or DWTT tests.
Can you please refer me to the correlations or related references, if...
Hello everybody,
I have a steel buried pressurized pipeline with two induction bends (L-shape)and (Z-shape). I need to run a quick calculation to check the stresses induced by temperature differences. I am following Peng's old approach ( paper is attached). According to Peng, we have to...
Hi everyone,
I do remember that ASME has a table proposing values of oil and gas pipeline parameters inducing toughness (conservative values), in case one does not have these parameters in the analyses. Unfortunately I can't find the document . Anyone can help..?
Thanks
Also, one more thing we should remember is that defining the seismic category/class of a site is not completely a mathematical exercise involving shear wave velocity measurements or SPT numbers. It does, however, require good judgment as well.
Hello,
can anyone tell me please where I find analytical formulas for cantilever beam on the elastic foundation (e.g compacted soil) under uniformally distributed load and under end moment or deflection.
Thanks for your support.
Sam
