Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • 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 alumpkin

  1. alumpkin

    DESIGN OF ROUND HOLLOW CONCRETE BEAM WITH AXIAL LOADS

    Looking for any type of classical methods to analyze a round hollow concrete beam with axial load. It is really a cantilever tower that is 858 feet for the outside diameter and 81 feet interior diameter that is 615 feet tall. Wall thickness is 24 inches. I have the applied moment, so I now want...
  2. alumpkin

    EZ CRANE

    thread507-377236 Anybody still have this download available? It usually came as a zip file. Would love to get a copy of the demo version. Alan L. Lumpkin, MS, PE Greenville, SC
  3. alumpkin

    Fatigue Equation for Cap Channel to Wide Flange Beam

    Looking for guidance using Table A-3.1 in AISC manual for the fatigue equation for welding a cap channel to a wide flange beam. One option is continuous fillet welds and the other is intermittent fillet welds. It appears that for continuous fillet welds equation 3.1 is the correct one which has...
  4. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    OK...that makes sense. Thanks. Alan L. Lumpkin, MS, PE Greenville, SC
  5. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    Hi Joel, YES! I found it and have downloaded some of documents and will begin studying these. @DIK, So how does structural fill discount any upward movement of the deeper limestone and clay soils? If they move upward will not the structural fill go for the ride and exert pressure against the...
  6. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    Guys, By the way, the Geotech recommendation id for 1" movement. Alan L. Lumpkin, MS, PE Greenville, SC
  7. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    Guys, Here is other document. Alan L. Lumpkin, MS, PE Greenville, SChttps://files.engineering.com/getfile.aspx?folder=2dc89d3d-fcf5-4a50-97fc-8dd27bb01474&file=Structural-Slabs-FPA-SC-01-0.pdf
  8. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    Hi Guys, Thanks for all of the input and responses you provided. Some of you have asked about perimeter grade beams and such. Please note that I describe the grade beams sizes in the original post. Now, please see the attachments for you information. There is a slab plan showing grade beams and...
  9. alumpkin

    SLAB ON GRADE DESIGN FOR EXPANSIVE SOILS

    Generally looking for some guidance on how to design slab on grade for expansive soils. Geotech is recommending a monolithic grade beam stiffened non-structural slab supported by straight shaft piers. The recommendation is to remove the top 5 feet or so of the expansive clays. Below these clays...
  10. alumpkin

    E80 COOPER RAIL LOADS TO RETAINING WALL

    @SlideRuleEra, Yes...the above loading is only from the train itself and you must include the soil load + hydrostatic. Alan L. Lumpkin, MS, PE Greenville, SC
  11. alumpkin

    E80 COOPER RAIL LOADS TO RETAINING WALL

    Guys, Thanks for your input. Alan L. Lumpkin, MS, PE Greenville, SC
  12. alumpkin

    E80 COOPER RAIL LOADS TO RETAINING WALL

    OK guys.....I get the 1880 psf load as surcharge load and I also agree with that number. Now moving towards design, the load cases as defined by AREMA are as follows: 1.4(DL+5/3(LL+I)+E) …...there ia no impact on soils loads per AREMA CHAPTER 8 so that leaves the equation as 1.4DL +...
  13. alumpkin

    E80 COOPER RAIL LOADS TO RETAINING WALL

    Thanks for all responses. Alan L. Lumpkin, MS, PE Greenville, SC
  14. alumpkin

    E80 COOPER RAIL LOADS TO RETAINING WALL

    Looking for commentary about the design of retaining wall (abutment wall) for rail loads from E80 Cooper engine when rails are perpendicular to the retaining wall …..not parallel. Alan L. Lumpkin, MS, PE Greenville, SC
  15. alumpkin

    Tilt Wall Reinforcing for a Knockout Panel

    WARose, Thanks for the response. Not in high seismic region nor high wind. Panel could be there for several years before the expansion begins. Alan L. Lumpkin, MS, PE Greenville, SC

Part and Inventory Search