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  • Users: Knarf1Man
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  1. Knarf1Man

    Roadway-Design Question regarding "Posted" Speed versus "Design&q

    Hi all. We are designing a new public road and my question is regarding the correct/preferred method for using a "Design-Speed". All vertical & horizontal geometry for the new road will comply with AASHTO & State-DOT standards. I've read/been-told that the Design-Speed is always higher...
  2. Knarf1Man

    HEC-RAS Bridge Modeling question ....

    I'm working on a project at the junction of two large rivers (30,800 CFS). There are multiple existing bridges over each of the two rivers (all bridges are skewed, 2 are at 40-degrees). My question is how should I model the bridges? The Section lengths are much longer/larger than the bridges...
  3. Knarf1Man

    AREMA code questions

    Ok .... for those who may be interested, here's the official response directly from AREMA Answers: 1) For the floorbeam reactions, use the 12-ft span pier reaction listed. The pier reaction is based on a 12-foot span on either side of the pier, or a total influence on the pier of 24...
  4. Knarf1Man

    AREMA code questions

    Ok .... for those who may be interested, here's the official response directly from AREMA Answers: 1) For the floorbeam reactions, use the 12-ft span pier reaction listed. The pier reaction is based on a 12-foot span on either side of the pier, or a total influence on the pier of 24...
  5. Knarf1Man

    AREMA code questions

    We recently purchased the 2009 AREMA manual. My questions relate to the use of Table 15-1-15 (Max. Moments, Shears and Pier/Floorbeam Reactions for E80 Live-Load) on page 15-1-77. To simplify, let's assume that I have a single track that bridges over an unloading pit. There are multiple...
  6. Knarf1Man

    AREMA code questions

    We recently purchased the 2009 AREMA manual. My questions relate to the use of Table 15-1-15 (Max. Moments, Shears and Pier/Floorbeam Reactions for E80 Live-Load) on page 15-1-77. To simplify, let's assume that I have a single track that bridges over an unloading pit. There are multiple...
  7. Knarf1Man

    Fatigue applicability for welded attachment ?

    Would appreciate any input on this subject .... I am designing plate girders for an outdoor trolley system (AISC Loading Condition 4). I want to attach the walkway supports (cantilevered W-sections perpendicular to the girder) by shop-welding directly to the underside of the plate-girder's...

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