Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by CISGeotechnical

  1. CISGeotechnical

    How to analize the lateral forces in a soil due to a pole?

    TO: henerythe8th You have a good point in the UBC 1997 code, section 1806.8. You need to iterate to use the depth of embedment that the formula yields in the allowable lateral soil pressure computed. That's a good starting point. However, the UBC values for lateral soil pressure are a...
  2. CISGeotechnical

    How to analize the lateral forces in a soil due to a pole?

    Hi Mtroche: I have worked with Billboard signs foundations as the Geotechnical Consultant and has made research looking for calculating the depth of embedment required to overcome the lateral loads imposed by winds. If you want I can send you a paper in pdf format that helped me a lot getting...
  3. CISGeotechnical

    Allowable Bearting Capacity vs Soil Modulus

    gibbycu, Às other members in this forum.... I too would like a copy of the paper you mentioned. Please send via e-mail to jrodriguez@centralindustrialpr.com. Sorry for bothering, but this forum is the best I have found for sharing information that is out of print or difficult to find. Thanks...
  4. CISGeotechnical

    Allowable Bearting Capacity vs Soil Modulus

    Stanier: If you already have an allowable bearing pressure given in a geotech report, usually the modulus of subgrade reaction can be estimated from the allowable bearing pressure by the following relationship: Ks = 36 x qall where: Ks = modulus of subgrade reaction in kips/ft^3 qall =...
  5. CISGeotechnical

    Are Bay Muds (OL/OH) Class F Soils by UBC?

    Gibson: We have try to give you some help on this, but lets get to the point. What is the purpose of your question? Are you designing a structure for compliance with seismic codes or need any other help, like research, thesis, etc.? This info can be valuable in getting straight to the point...
  6. CISGeotechnical

    Seismic on retaining wall

    Although I am nopt familiar with Monokobe-Okabe equations I can tell you that the basics of restrained versus non-restrained retaining walls is that you should use different earth pressure conditions. For restrained retaining walls the coefficient of earth pressure should be that of the at-rest...
  7. CISGeotechnical

    Are Bay Muds (OL/OH) Class F Soils by UBC?

    Another though... I think California has many guidelines developed for geotechnical investigations and report contents. For example, County of Los Angeles, Department of Public Works and the City of Santa Monica. you may find those on the web. Check for your specific area if such exist...
  8. CISGeotechnical

    Are Bay Muds (OL/OH) Class F Soils by UBC?

    Gibsong: I think your concern is to perform a "site-specific geotechnical investigation and dynamic site response analysis" as quoted from the UBC 97, chapter 16. My recommendation is that you find a geotechnical firm who has an in-house engineering geologist and experience in the...
  9. CISGeotechnical

    Drilled Piers for Signboards

    Ron: By "collar", do you mean something like expanding the shaft contact area with the soil along the shaft length until the passive resistance requirements are met? This is the rationale I've been using but usually expanding the upper area with something like an expanded upper...
  10. CISGeotechnical

    Drilled Piers for Signboards

    After being the Billboard's company geotech consultant for a while, this company has asked me to analyze their existing old Billboards in order to know if they comply with current UBC code and the code back then when it was constructed. I have found that almost all of them are embedded in the...
  11. CISGeotechnical

    Drilled Piers for Signboards

    Could anyone tell me or help me in getting the paper of Ivey, D.L., and D.L. Hawkins on "Signboard Footings to Resist Wind Loads", Civil Eng., pp. 34-35, December 1966. I am the geotechnical consultant for a Billboard's company and would like to get the original paper shown above. I...
  12. CISGeotechnical

    Correlation between SPT and alowable bearing pressure

    The US Army Corps of Engineers has published many Engineer Manuals that can make you more than satisfied since they are based on current practical applications and have sustantiable references for further reading. For example, N values has been used mainly for sands to correlate allowable...
  13. CISGeotechnical

    PY Curves?

    Can somebody give some light in what the PY curve term is? I suppose it refers to Load-Settlement Curve but I'm not sure. Any reference would be appreciated.
  14. CISGeotechnical

    World Trade Center Subsurface Profile

    Also you may find particular information on general bedrock characteristics of the WTC at the classical 1974 textbook from R.B. Peck, W.E. Hanson and T.H. Thornburn, Foundation Engineering, 2nd ed., John Wiley & Sons, for some of us considered a Bible in Foundation Engineering. For example, p...
  15. CISGeotechnical

    WHERE TO GET PLAXIS

    Sorry for repeating this message. The only difference among both messages is the addition of the geocomp website. CISGeotechnical
See more

Part and Inventory Search

Back
Top