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  1. Keystation

    Prying Action Plate Bending (AISC)

    My supervisor told me to show how am I gonna account for plate bending due to prying action. My question is isn't that already part of the code? FYI, I am using AISC15th edition and calculated tmin instead of tnp. We have a preferred design requested by the client. It would be ideal if I can get...
  2. Keystation

    Corbel Design Confusion (ACI)

    Hi, I haven't done a corbel design before and confused how ACI approaches it. My main question is: Is it possible to make corbel without strut and tie method? In ACI, shear is covered by shear friction provision and moment by chap22.2 (sectional strength). Is it only asking to calculate shear...
  3. Keystation

    Post Installed Bolts on Steel

    One of the beams are already under fabrication and I need to make extra holes into that member. Is there a provision for post installment of bolts holes? I tried to look for one in AISC or RCSC but no luck. I am concerned about post drilled bolt holes not having zinc coat on them and cause...
  4. Keystation

    Hilti Profis Shear Reinforcement

    I am designing a column with high shear and moment. I used a shear lug and it's calculating for concrete breakout in shear by shear lug. However, it's still failing. So I clicked on shear reinforcement for anchors but that didn't do anything. Is this because shear lug is meant to take all the...
  5. Keystation

    U factor confusions

    Hi, I wanted to ask the community about my confusion on steel connections. For your reference, I use AISC. 1. Is it possible to have multiple U factor for the same tension members? For instance, a diagonal member will experience tension in two directions. Do you calculate U factor when the load...
  6. Keystation

    Slenderness of plate

    Hi, I am a young engineer designing for gusset plates. AISC J4.4 deals with compression of connecting elements. However, if the slenderness is over 25, it says to apply chapter E. How do you apply chapter E for plates exactly? Table E1.1 shows limit states for each cross sections but I don't...
  7. Keystation

    SAP2000 Modeling Question

    I am making an x brace that is connected by a plate in the middle. However, it's not 4 individual members joining together in the middle. Two members are just crossing each other connected by plate in the middle to reduce unbraced length. If I were to make 2 elements crossing each other...
  8. Keystation

    Anchors between two concrete blocks - concrete breakout in tension

    Hi, I am a young structural engineer. I am calculating for concrete break out strength of anchors in tension. The vertical black lines between the concrete are the anchor rebars. The situation is depicted in the picture above. Do you know which concrete is more critical? Rebars are embedded 4...

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