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  • Users: ysna
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  1. ysna

    Designing a retaining wall system for an already excavated deep open cut prone to collapse

    Hi, A client of mine have asked me to suggest and design a retaining wall system for an 18 meter deep excavation next to a series of adjacent 5 to 6 story residential buildings alongside one edge of the excavation site. The problem is, almost 90 percent of excavation to the desired depth have...
  2. ysna

    Building of historical significance built upon creep prone deep alluvial soil

    Hi, I'm working for a consulting engineering, responsible for designing restoration and retrofitting plans for a two story adobe masonry building of historical significance. The building is built upon an alluvial fan with more than 20 meters of horizontally bedded layers of gravel and sand...
  3. ysna

    A water leackage problem on an underpass structure

    Hi, There is this project that we are working on right now, that has a serious seepage problem (see attached photo). It is an underpass structure which is not completely isolated when built, so water leaks from it's floor and possibly through the walls. The water table is 2 meters below ground...
  4. ysna

    Modeling a Soldier Pile Wall with Raker Support

    Hi, I'm designing a soldier pile wall with raker support for a temporary 4m excavation in a medium dense silty sand (phi=30, c=0) using SAP2000 FEA software. The wide flange IPB section piles are to be buried in 1.0m height, 0.8m diameter cast in place reinforced piles below dredge line and the...
  5. ysna

    A question about Example 7-1 of CT Trenching and shoring manual

    Hi, I am trying to design a braced soldier pile wall with the help of CT manual, but I seem to have problem finding the required depth of embedment of piles. According to the manual I need to take moments about brace location on the pile to calculate embedment depth using a factor of safety of...

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