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  1. hamid.njd

    Center of Graviry in Horizontal Vessel

    @r6155 : The exact location of C.G. is needed for shipping and lifting calculation due to the client's request. @SnTMan: Thanks. I have checked Dennis Moss and it has been discussed there.
  2. hamid.njd

    Center of Graviry in Horizontal Vessel

    I might be brought up my question wrongly. But the question is exactly what "Christine74" said. In PV elite, shows the distance of C.G. in only one direction. For the other direction (elevation of C.G. from horizontal centerline) is any know how to do?
  3. hamid.njd

    Center of Graviry in Horizontal Vessel

    Dear All I want to calculate the center of gravity location on a horizontal vessel. When I perform mechanical calculations, the PV Elite software shows the location of C.G. in one direction (From Left T.L.). But the offset of C.G. from the centerline is a question for me. The question is: "How...
  4. hamid.njd

    Allowable Stress for Hydrotest

    If there is so, why does the PV Elite use, for example, 179.3 Mpa for hydrotest allowable stress in SA-516 70 material?
  5. hamid.njd

    Allowable Stress for Hydrotest

    Dear All; Thanks for your answers. The design Code is ASME SEC. VIII-D1. I know how to calculate the test pressure according to UG-99. But the question is "What is the allowable stress for the hydrostatic test?" According to the SEC. VIII, the maximum allowable stress for the hydro test is 90%...
  6. hamid.njd

    Allowable Stress for Hydrotest

    Dear All I have a qouestion: In hydrostatic test calculation, what is the allowable stress reference when considering not 90% of the yield stress? I checked. It is 1.3 times the allowable stress data that is mentioned in Sec.II-D. But I wanted the reference for it. Can anybody help me...
  7. hamid.njd

    Wind calculation according to ASCE 7-10

    Dear Stephen Thank you for your response. Can you please send me the reference table for wind speed in ASCE 7-10?
  8. hamid.njd

    Wind calculation according to ASCE 7-10

    Dear All I modeled a tower in PV Elite. For wind calculation according to ASCE 2010, I can't change the importance factor and the value is 1. I searched ASCE 7-10 and according to different categories and also according to the site condition the importance factor is 1.15 in my case. Does anyone...
  9. hamid.njd

    Nitrogen purge or silica gel

    In fact I don't have any spec yet. I just wanted to know the criteria in which the use of silica gel or N2 purge in mandatory.
  10. hamid.njd

    Nitrogen purge or silica gel

    Hi, can anybody help me to find any standard or code requirements for nitrogen purge or silica gel?

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