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Found 10 results

  1. For calculating the bearing capacity of soil (using N values), the equations for mat foundation and single footings is the same or its separate for each??
  2. Building two basement+Groumd+Four Floor How to improve bearing capacity of soil soil from 0.75tsf to 1.8 tsf?? and what technique or method should follow to improve the bearing capatcity for raft footing
  3. Does code recommends any minimum limit for bearing capacity if the bearing capacity of actual soil is known?
  4. a soil report was investigated when water table at depth of 1m,during construction water table raise up to NGL due to seasonal canal runing excavation of foundation is deeper than water table will cause seepage of water in excavation my question is bearing capacity and shear properties of soil is same in this condition, we can not provide footing at required depth any recomendation
  5. Hi all, I am designing the foundations of a small double storey building in Karachi for which no geotechnical investigation is envisaged. Can anyone tell me whats the average allowable bearing capacity in Karachi. Normally in Lahore, it ranges from 0.5tsf to 1.25 tsf. I would be glad if anyone can tell on basis of his experience in Karachi. Thanks
  6. As salamu alikum, I have a silly question.How to determine bearing capacity of shallow or deep foundation from SPT value.Please anyone give some reference or excel or handouts so that I can understand. Sorry for my ignorance and thanks in advanced
  7. Respected Engineers! what is the procedure to check soil pressure on safe and by using which combination. what is the procedure to pass soil pressure?
  8. Aoa. While designing foundations for building and other structures, allowable bearing capacity is used to calculate required area (spread) of footing. There are two approaches of structural engineers, regarding value of allowable bearing capacity, actually to be used. First approach says that the weights of soil below ground level and the footing concrete must be deducted from the allowable bearing capacity value given in the soil investigation report, to determine net bearing capacity. This net bearing capacity is to be used to be used for calculating footing area required to support the load from superstructure. The second approach, says that NO deduction is required for soil and concrete below ground level, because: a. soil investigation is carried out while original soil over burden is in place, and only superstructure load is to be carried out by the foundation, b. Allowable bearing capacity given in the soil investigation report is very conservative, as it is commonly calculated by employing a factor of safety of 2.5 to 3. The first approach results in comparatively larger footing sizes. The question is, which of the above two approaches should be followed? And, why (code or some other references)?
  9. Salam what is the difference between the two terms and how are these two related? Regards
  10. what are the advantages and uses of spring supports and where do we use them practically?
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