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  1. bridgeart

    shear studs - negative moment

    There is a shear studs design spreadsheet based on AASHTO LRDF 3rd Edition (2004), Art. 6.10.10 that can be downloaded from http://www.designspreadsheets.com/shear-studs The picture on rows 95 to 102 and the strength check on rows 110 and 111 of the spreadsheet explain how the negative moment...
  2. bridgeart

    SAP2000 wiki - new design and new location

    I am happy to announce that the SAP2000 wiki has been recently redesigned to better organize the large amount of information it currently contains. The new wiki supplements the official documentation and is available at the following location: http://wiki.csiberkeley.com/x/IAAJ The content is...
  3. bridgeart

    Modeling shell and solid (transition) in sap2000

    Please see the following article in SAP2000 wiki that contains useful information on connecting frame, shell and solid elements: http://csi.structuralwiki.org/en/Connecting_frame%2C_shell_and_solid_elements
  4. bridgeart

    Temperature gradient

    Below is a link to page in SAP2000 wiki that include a nice example of how the temperature gradient loading is calculated and applied to bridge objects (both hand calculations and SAP2000 model are included): http://csi.structuralwiki.org/en/Temperature_gradient_loading_for_bridge_objects
  5. bridgeart

    Large Deformation

    Using large displacements also enables you to model some interesting dynamic phenomena, such as swinging pendulum or dropping of an object on a plane. Please see the links below for screenshots and videos: Sphere dropping on a plane Pendulum (Newton's Cradle)
  6. bridgeart

    User Defined Moving load in SAP

    You can define influence-based and step-by-step moving load analysis. The procedures are described in the manual and overview of the basic steps is also presented here: Step-by-step moving load analysis - basic introduction Influence-based moving load analysis - basic introduction
  7. bridgeart

    Batch file in Sap

    See http://csi.structuralwiki.org/en/Command_line
  8. bridgeart

    material non linearity

    For frames, you can use either hinges or links to model localized nonlinear behavior. Additional information about links and hinges in SAP2000 can be found here (section "Should I use hinge or link?"): http://csi.structuralwiki.org/en/Link/FAQ#Should_I_use_hinge_or_link.3F
  9. bridgeart

    Reinforced Concrete design of Slabs

    You can find some useful information about reinforcement design for concrete shells on the following page: http://csi.structuralwiki.org/en/Shell_reinforcement_design ok, StructuralWiki.org
  10. bridgeart

    Batch capabilities

    You may find the information on this page helpful: http://csi.structuralwiki.org/en/Command_line ok, StructuralWiki.org
  11. bridgeart

    Bridge multi support seismic excitation

    See the following pages: http://csi.structuralwiki.org/en/Multi-support_excitation and http://csi.structuralwiki.org/en/Time_history_multisupport_excitation/form_tutorial
  12. bridgeart

    Minnesota Bridge Findings

    The "Adequacy of the U10 & L11 Gusset Plate Designs for the Minnesota Bridge No. 9340 (I-35W over the Mississippi River" report available from the link below provides detailed analysis of the main truss gusset plates: http://www.ntsb.gov/Recs/letters/2008/H08_1_Design_Adequacy_Report.pdf It...
  13. bridgeart

    Project Managment Software

    My company uses Deltek Vision, but I personally think that it is not the best fit for AEC firm. It seems to work good for accounting and timesheets, but it lacks advanced document management features (e.g. revision tracking). While the project managers may use it for project management, it...
  14. bridgeart

    Research Paper Database Software

    Some time ago, I developed publications database to keep track of technical literature in MS Access. It can be downloaded from http://www.longtailgroup.com/tools/publications_database/ and I believe that it could be used for your purpose. If needed, it would be possible to convert it into MySQL...
  15. bridgeart

    Need programs for beams, columns, plates etc.

    Try these links: plates, columns, beams, foundation, footings -ok BridgeArt.net ~ Structural Wiki ~ AEC Software Database
  16. bridgeart

    Project Based Document Management

    List of 10+ web-based project and document management systems. The programs in the list are primarily for Architecture, Engineering and Construction (AEC), but vendors typically have solutions for multiple vertical markets. -ok BridgeArt.net ~ Structural Wiki ~ AEC Software Database
  17. bridgeart

    Help in setting up new spreadsheet

    To drizzt19: if you want to keep using spreadsheet, I would recommend trying out Google Docs Spreadsheet ( http://docs.google.com ). It is a web-based spreadsheet that multiple people can edit at the same time. This way you can keep all the data on one spreadsheet - all you need is internet...
  18. bridgeart

    nominal moment

    I believe that nominal moment is the actual flexural resistance of a section calculated from section geometry and section material properties. In load factor design method the nominal moment (Mn) is usually multiplied by strength factor (phi) to obtain moment resistance (Mr): Mr = phi * Mn...
  19. bridgeart

    simple retaining wall program?

    Here is a listing of 10 retaining wall programs (more to come...): http://www.bridgeart.net/software_database/keywords/retaining_wall/ -ok www.bridgeart.net
  20. bridgeart

    fatigue moment

    I have the following "slightly related" question to the initial post: AASHTO LRFD 2004 defines fatigue truck essentially as the HS20 truck with spacing between the two rear axles fixed at 30ft and 15% impact (load factor for fatigue equal to 0.75). Article 3.6.1.4.1 then states that "... the...

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