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  1. TAC

    Settlement of Clayey Structural Fill vs. Undisturbed Soil

    I am doing a settlement analysis for a foundation being built on some old structural fill. The lower portion of the soil profile is glacial till silty clay that is probably A-6b soil. The original soils are over-conslidated and have an OCR of about 5 to 6. The upper portion of the soil profile...
  2. TAC

    Blum Theory - Sheet Piles

    A computer program we would like to use for sheet pile design is based upon the "Blum theory". I am looking for more info on Blum's theory, so we can check out the program. Thus far I have found short references to him, but no details regarding his theory. Can anyone give us a...
  3. TAC

    Using Scrap Tires to Buld Retaining Walls

    I have used shredded scrap tires for various applications, however, I was recently asked about using whole tires to form a retaining wall.  I would imagine it gets designed like a segmental wall, but I am looking for info on design guidance.  Or if anyone has any thoughts...
  4. TAC

    Engineering properties of petroleum coke ash (cross post)

    I am searching for resources regarding petroleum coke fly ash and bottom ash.  Our goal is to prepare a testing program for our client to determine the properties of the ash and their applicability for various construction uses (ie. subgrade stabilization).  I am particularly...
  5. TAC

    Engineering properties of petroleum coke ash

    I am searching for resources regarding petroleum coke fly ash and bottom ash.  Our goal is to prepare a testing program for our client to determine the properties of the ash and their applicability for various construction uses (ie. subgrade stabilization).  I am particularly...
  6. TAC

    Spillway filter design

    I am working on the redesign of a spillway for a small embankment dam. The existing spillway leaked causing errosion of the underlying silty clay soils. I am currently designing a filter for below the new concrete spillway. Does anyone have any suggestions based on experience or any good...
  7. TAC

    Spillway filter design

    I am working on the redesign of a spillway for a small embankment dam. The existing spillway leaked causing errosion of the underlying soils. The underlying soil is a silty clay. I am currently designing a filter for below the new concrete spillway. Does anyone have any suggestions based on...
  8. TAC

    Rubber modified pavement

    We are preparing for a road reconstruction project utilizing various recycled scrap tire products (devulcanized and crumb rubber and tire shreds) The pavement for the road will consist of 1.5 inches of hot mix asphalt containing devulcanized rubber over 1.5 inches of cold mix containing crumb...

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