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Recent content by TypeIV

  1. TypeIV

    Additional Longitudinal Steel (LRFD 5.8.3.5) in Concrete Bents

    AASHTO LRFD's Longitudinal Steel Check (LRFD 5.8.3.5)requires additional longitudinal reinforcement due to shear. I have seen conflicting information regarding the requirement for this additional steel (Al) in a concrete bent/pier frame cap. 2007 AASHTO LRFD 5.8.3.5 states: "The area of...
  2. TypeIV

    Additional Longitudinal Steel (LRFD 5.8.3.5) in Concrete Bents

    AASHTO LRFD's Longitudinal Steel Check (LRFD 5.8.3.5)requires additional longitudinal reinforcement due to shear. I have seen conflicting information regarding the requirement for this additional steel (Al) in a concrete bent/pier frame cap. 2007 AASHTO LRFD 5.8.3.5 states: "The area of...
  3. TypeIV

    Fantastic Spreadsheets and XLC

    Leave it to Yakpol to beat me to it! Anyway, it is worth repeating!
  4. TypeIV

    Through Plate Girder Bridge

    I am designing a "Through Plate Girder" - Single Track, Simple Span Bridge for BNSF and they are requiring a built-up bolted bottom flange because it is an Underpass. I wanted to ask the forum if you know of any design examples (go-by) for the Through Girder Design and the Knee Brace Design...
  5. TypeIV

    Fantastic Spreadsheets and XLC

    I have found a website called www.ExcelCalcs.com where you can download free software, called "XLC" to make your Excel workbooks read like text books by displaying cell formulas as mathematical equations. There is also a fanatastic REPOSITORY OF SPREADSHEETS created by members and a supportive...
  6. TypeIV

    RR Bridge Stiffeners

    Thanks MICHST. I appreciate your looking into it. I am checking with another source too and I will post anything I learn. Keep up the good work!
  7. TypeIV

    RR Bridge Stiffeners

    I am designing a Through Girder RR Bridge for BNSF and I need help with the intermediate stiffener. I am bolting a WT stiffener to the web for the intermediate stiffeners, but I can't find anything in the AREMA code to give me a criteria for designing the bolted connection. (AISC had equation...
  8. TypeIV

    AASHTO LRFD "At-Grade" Box Culvert Loading

    Thank you Andy10, I will look into that.
  9. TypeIV

    AASHTO LRFD "At-Grade" Box Culvert Loading

    The main reinforcement is generally parallel to the traffic (with a 60 degreee skew to the Highway).
  10. TypeIV

    AASHTO LRFD "At-Grade" Box Culvert Loading

    Thanks jimaitken! I think I will do that and do the same for the OK overload truck too. Happy New Year!
  11. TypeIV

    AASHTO LRFD "At-Grade" Box Culvert Loading

    I am designing an "at grade" (Cover < 2'-0") RCB using AASHTO LRFD. The State DOT I am in specifically requires us to use LRFD for RCB's. The LRFD Code only requires the full analysis for HL93 and Lane Load if the supporting walls are > 15 feet apart. I am designing a Triple 10'(W)x6'(H)...
  12. TypeIV

    AASHTO LRFD &quot;At-Grade&quot; Box Culvert Loading

    Thanks bridgebuster! Oklahoma specifically requires us to use LRFD for RCB's. The LRFD Code only requires the full analysis for HL93 and Lane Load if the supporting walls are > 15 feet apart. I am designing a Triple 10'(W)x6'(H) reinforced concrete box and the code says "Where primary strips...
  13. TypeIV

    AASHTO LRFD &quot;At-Grade&quot; Box Culvert Loading

    I am designing an "at grade" (Cover < 2'-0") RCB using AASHTO LRFD. The spans are < 15'-0" and the code says to design for a 32 kip axle load. I have a three barrell box and I am wondering if that 32 kip load is acting alone and moved across the three spans for maximum forces or is it multiple...
  14. TypeIV

    AASHTO Elastomeric Bearing Pad Question

    In the LRFD, or any other AASHTO code, I don't understand the statement in the LRFD commentary for Stability of Elastomeric Bearings, C14.7.5.3.6, "This freedom to move horizontally should be distinguished from the question of whether the bearing is subject to shear deformations relevant to...
  15. TypeIV

    AASHTO-LRFD Box Culvert Loading

    I am trying to determine how the AASHTO-LRFD code wants me to determine the lateral earth pressures(EH)against the outside walls of an reinforced concrete box culvert due to Earth Loads and Live Loads(HL93). I have a box culvert that has complicated and unconventional transitions from a single...
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