Hello everyone. When I define the elastic foundation.
What does the "Estimaed foundation load" ? How can I have it when I have Geological for my building ?
Thank you all for reading my post and help me !
Continuous footing by thickness foundation
Thank you. If I have more columns in continue footing foundations, will I must sum the load design of colunm ?
This is type of foundations which I wan to design. But I am having some problem with Kz coefficient.
Please help me to get it clearly. Thank you so much
Accepted solution
Looking at the foundation system that you got, for simplicity purposes I would just take the critical "row" of columns having the highest loads and used that for the estimation of the bearing forces. See figure below;
Thus, the estimated pressure would be = 3*F/Area as shown on figure above.
Note, this would be a simple estimation. As an additional way to validate the results above personally I would also do a sensitivity analysis of these foundation in respect to the Kz ground coefficients i.e. I would have 3 models, one with the Kz as calculated above, another one with 2x Kz value and a final one with 1/2 the Kz value.
It is important to understand though, that the Kz value calculated in Robot has multiple assumption (force based and soil properties based) and that your ground condition in real life might differ from it. As general practise, a geotechnical study should be done to confirm or correct Kz values used.
But If I choose the continue footing foundation. The unit is kip/ft (kN/m). There is not true if the estimated pressure would be = 3*F/Area (the unit must be kip/ft2 (kN/m2) )
Accepted solution
that is because you are choosing the "Strip Footing" foundation type. If you chose the Pad-footing type you should get the Kip/ft2. Alternatively you can just convert the 3*F/Area (Kip/ft2) in to Kip/ft by multiplying it by the WIDTH of the footing. i.e. (3*F/Area)*Width = Kip/ft.
