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Recent content by parapetguy

  1. parapetguy

    Questionable Calculations

    Woodman88 I read the thread and kind of got lost in the details of needing three public copies but got the gist of where it was headed regarding the board's involvement. I can appreciate the board unwillingness to intervene and become the referee to settle a difference of opinion on...
  2. parapetguy

    Questionable Calculations

    For what it is worth, I'm on a licensing board and this is an easy call. As a professional licensed in the state, you have an obligation to protect the health safety and welfare of the public. If you suspect incompetency (which it appears that you do from your 15:08 post), this should be...
  3. parapetguy

    Parapet upstand/stringcourse/edge beam

    This is a rather difficult question. It sounds like there is not an expansion joint between the bridge and the wingwall. Is this correct? If that is the case, you might want to consider stopping at the existing mass concrete wingwalls and not extending the rebar into them. As long as the...
  4. parapetguy

    Beam and Slab Bridge Design

    Check out this web page from PCI. http://pci.org/publications/bridge/index.cfm You will find design examples that explain how the superimposed slab interacts with the prestressed beam and how stresses are to be calculated for the intial and final conditions.
  5. parapetguy

    Design Guidelines for bridge expansion joints

    Most joints are proprietary and are not "designed" but selected; the exception being fingerplates. Strip seals, compression seals and modular joints are proprietary and often can be found on a state DOT approved materials list. Take a look at several state DOT bridge design manuals and you will...

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