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  • Users: gbam
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  1. gbam

    Precast box culvert Jack-n-Bore

    Hello all. Has anyone performed, spec'd or witnessed a jack and bore (or similar installation) on a precast box culvert? I am considering this type of installation for a two cell precast box and am wondering if it is feasible. I have heard that it has been done in the past but have not seen...
  2. gbam

    HECHMS Time Area Curve

    Okay, I am an old HEC-1 user and have finally given in to trying to learn HMS. I have a question regarding a time area curve: How does one change the time area curve in HMS? In my area we use the Clark unit hydrograph with varying time area curves based on land type. I cannot find how to...
  3. gbam

    Importing HECRAS Using INROADS

    In the past we have been able to use GIS Output from HECRAS as input for INROADS. With all the version upgrades for both HECRAS and INROADS we can nolonger import water surface data. Are there special tricks or settings we need to tweak before we can import this type of data? Am I missing...
  4. gbam

    Solar Pool Heater Calculation

    Hello all; Hopefully this is the correct location for this post. I am trying to compute the length of need for black Poly pipe for my solar pool heater. I can calculate the flow velocity and hydraulics, however, I am not sure where to look to obtain information regarding solar heat transfer to...
  5. gbam

    Large Span Structures

    All, Can you please provide suggestions for products that you have used or heard of that are used for spanning large distances. We have a project in which our client would like to minimize disturbance to the Jurisdictional limits in a number of washes. I have been looking at two main products...
  6. gbam

    How to read Data from spreadsheet to VBA?

    Quick question- Is it possible to enter data, array format, in a spreadsheet then read it into VBA to perform computations?
  7. gbam

    Clear Zone Question

    Is there a ref. on clear zones for curbed sections? I have looked and looked but cannot find any. Your help is greatly appreciated.
  8. gbam

    Velocity Coefficient

    I am looking for a ref. on culvert analysis with approach velocity. Specifically the cofficient for velocity to reduce the velocity head from the ponded headwater of the culvert. Hope you can help me, my co-worker and I have been looking through many sources and havent had any luck yet.
  9. gbam

    RipRap Aprons

    Hello All, I have been looking for a source of information for designing riprap aprons as culvert scour counter measures. Our local DOT has some information but I would like more indepth information. I am not talking about a plunge basin as in HEC-14 only an apron @ the outlet. Any information...

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