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  • Users: PittEng88
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  1. PittEng88

    Tank Wall Hydrostatic Pressure

    Hi Everyone, I'm looking at designing a fully buried wet well for a pump station, inside dimensions are 30' Long x 8' Wide x 27' Deep. The geotechnical report indicates that bedrock is pretty shallow in the area so the well will need to be keyed in. The problem is, that we are also next to a...
  2. PittEng88

    Lateral Bracing of a Steel Beam using CMU Wall

    I am currently working on a project that requires a partial height removal of a CMU Wall for a building addition. A steel beam header will be installed to pick up the loads from the remaining portion of the CMU wall above. If the steel beam is only grouted to the underside of the CMU wall with...
  3. PittEng88

    Deck Pour Sequence Change

    Hello All, I have a contractor who has requested a change to the approved pouring sequence specified in the bridge plans in an effort to save time. The bridge is a three span continuous spread box beam superstructure with a PennDOT Skew of 83° (7° AASHTO Skew). All three spans are 100 feet...
  4. PittEng88

    Wrought Iron Material Properties

    Hi Everyone, Does anyone know where I can find the yield and ultimate strength of wrought iron. I am doing some rehab work to a wrought iron Phoenix Truss, built in 1889. I have looked in several places, including AISC's Iron and Steel Beams 1873 to 1952, and all I can find is the allowable...
  5. PittEng88

    Wood Connections for Rehab Project

    Hi Everyone, I am in the process of rehabbing a historical stone masonry building with timber framing on the inside. The walls will be repointed and the existing timber framing is to be removed and replaced. During the design process it was noted that some of the older connections for the...
  6. PittEng88

    Bridge Collapse in Ridgway, PA

    I saw this on the news the other day. http://www.seattlepi.com/news/article/Portion-of-bridge-under-repair-collapses-in-6335797.php http://www.mytwintiers.com/story/d/story/three-workers-injured-in-pa-bridge-collapse/39935/rK5MrHC8fEGRiBBbyGFvLA...
  7. PittEng88

    Bridge Expansion Joint Movement

    Does anybody happen to have a good example of bridge expansion joint movement calculations that include the beam end rotation as well as thermal movements?
  8. PittEng88

    Rotated Segmental Retaining Wall

    Hi All, Our company recently received a submittal for a segmental retaining wall, that will be approximately 10-12 feet in height. Typically these submittals are pretty straight forward. However, the design engineer decided to rotate the entire wall, including the foundation base, 5 degrees...
  9. PittEng88

    Rotated Segmental Retaining Wall

    Hi All, Our company recently received a submittal for a segmental retaining wall, that will be approximately 10-12 feet in height. Typically these submittals are pretty straight forward. However, the design engineer decided to rotate the entire wall, including the foundation base, 5 degrees on...
  10. PittEng88

    Interior CMU Partition Wall

    Hi All, I am currently designing CMU partition walls (non-load bearing) that are 16' high, for an existing building in Puerto Rico. The architect has proposed a steel support frame for behind the walls to provide bracing at mid-height and the top of the walls, see attached image. The length of...

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