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  1. C Hietbrink

    Minimum Bearing of Steel Beam at CMU Wall

    Thanks for all the information. The wall is fully grouted so the bearing plate would be supported by the fully grouted wall. The idea of the bent plate with the anchors installed through the face of the wall was to ensure that the anchors could meet all of the necessary edge distance and...
  2. C Hietbrink

    Minimum Bearing of Steel Beam at CMU Wall

    I have a modification to an existing building in which we are removing some precast hollow core planks and replacing it with a composite deck floor system supported by steel beams. I wanted to try and utilize the existing foundation stem walls for support of the beams. I have a 12" thick CMU...
  3. C Hietbrink

    Slab on Slab Construction

    After speaking with the owner and architects we will be shifting the expansion joints to fall under walls so that there will be no possibility of the expansion joint creating a crack that propagates through the epoxy floor. I just want to say thanks to all that replied.
  4. C Hietbrink

    Moment Splice of Beam

    Thanks for the responses, That is a good point. I have decided to specify a welded plate but I was going to give them a couple of bolt holes to assist with erection.
  5. C Hietbrink

    Moment Splice of Beam

    The web plates would need to be bolted on during the erection process because this is all happening in a crawl space with limited room to work and bring in the beams. They could be bolted on and then the beam jacked into place, connected at the girders, and then weld the flange plates. The...
  6. C Hietbrink

    Moment Splice of Beam

    I am splicing a W section and because we are installing it under an existing deck, I can't weld a single plate to the top of the top flange. In lieu of that I am welding two plates to the bottom of the top flange along with the typical single plate to the bottom of the bottom flange. I was...
  7. C Hietbrink

    Moment Splice of Beam

    It is not that I necessarily want a fully welded connection because I could always specify that just as you said; however, I am wondering if there is any specification or code that prevents the use of a bolted web plate connection in combination with the welded flange connections. The shear at...
  8. C Hietbrink

    Moment Splice of Beam

    I am doing a retrofit of a structure that prevents a full length beam from being brought into the building. Therefore, the beam will need to have moment splice connections in one or more locations. I was looking to have the web plate connection as a bolted connection to assist in the erection...
  9. C Hietbrink

    Slab on Slab Construction

    I believe you are correct hokie66! I have since discussed this with the client and architects to see what they want to do but I tend to agree that the likelihood of a crack forming is pretty much inevitable.
  10. C Hietbrink

    Slab on Slab Construction

    I haven't had a chance to look at an approximate displacement yet, but the gap provided between structures is approximately 1". Thanks for everyone's input!
  11. C Hietbrink

    Slab on Slab Construction

    My thought was that I would have expansion joint material at all the interior walls to help prevent the walls from restraining the topper at all during any differential horizontal movement. There is a base plate in the middle of the operating room that secures the table to the existing slab...
  12. C Hietbrink

    Slab on Slab Construction

    The joint is located in the middle of the new operating room layout. At this point I doubt the client wants to go through a redesign of the layout. The plate that would span the joint would only be anchored on one side which would allow horizontal movement between the buildings. And the slip...
  13. C Hietbrink

    Slab on Slab Construction

    I need to bring the finished floor elevation of an existing elevated concrete slab up by anywhere from 2"-4" for new operating rooms within a hospital. The operating rooms are required to get a specialized epoxy flooring in which the substrate that it is installed over the existing elevated...

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