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  • Users: IceNine
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  1. IceNine

    Expansion Joint in Long Steel Brick Support Angles

    Hello, We have a project where brick is being hung from a cantilevered floor slab by means of a continuous angle hung from the floor beam. This angle will be approximately 200 feet long. Typically, the erector would weld smaller lengths of angle together to achieve this 200 foot 'continuous'...
  2. IceNine

    Masonry Design Software

    Has anyone used the CMD12 design tool from the Concrete Masonry Association of California and Nevada? If so, can the software incorporate flanges in the shear wall module?
  3. IceNine

    Beam Splice with Thermal Break

    I have a situation where a steel beam is cantilevering from inside to outside, and the architect wants a thermal break. So, I was thinking of creating a splice at the exterior wall with endplates on each side, a material such as a structural expansion bearing between the plates, and bolting...
  4. IceNine

    Shoring Existing Masonry Wall

    Hello- I have a situation where a building is being renovated, and the 5th floor has been removed in an area, causing the exterior wall to be unbraced between the fourth floor and the roof (20'). This is an older building, with the walls constructed of clay tile masonry. At the time I became...
  5. IceNine

    Fema 451B

    Check out the following website for great FREE publications. Fema 451: NEHRP Recommended Provisions: Design Examples Fema 451B: NEHRP Recommended Provisions for New Buildings and Other Structures: Training and Instructional Materials
  6. IceNine

    Seismic Loads for wood structure on steel frame

    Well, here's my situation: I have a five story building. The upper three levels are to be wood framed w/ plywood shearwalls and the lower two levels are to be steel x-braced frames with concrete slab diaphragms. My question is in determining seismic loads, would I look at the three story wood...
  7. IceNine

    Multi story wood construction

    For those of you who do multi-story wood framed construction, I have a question: When using pre-engineered wood floor trusses bearing on a 2x6 exterior stud wall, do you use a solid band board the same depth as the truss to transfer the diaphragm loads into the shearwall? Or do you use solid...
  8. IceNine

    Support for footing reinforcement

    At a recent visit to a job site, I was observing the reinforcement for a cmu cantilevered retaining wall with a concrete footing. The hooked dowels extending out of the footing were supported by tying an additional vertical rebar to each dowel, and embedding it in the earth. This seems like a...
  9. IceNine

    Load distribution in mezzanine floor

    Hello- I have a mezzanine consisting of steel bar joists spanning 40', spaced at 24" o.c. with a 3 1/2" non composite concrete slab. My client wants to install a new rack system in which the the legs of the rack fall on every 5th joist or so. My question is, if the legs fall directly over a...
  10. IceNine

    Wood shearwall w/ offset

    Hello, I have a three story wood shearwall. The first and second levels line up, but the third story is offset horizontally about 4 feet out. I was thinking I could design the third floor diaphragm to cantilever out (or x braces in the floor) to pick up the shear, and possibly cantilever some...
  11. IceNine

    CMU Horizontal Joint Reinf.

    Do any of you have any preference between Truss type or Ladder type horizontal joint reinf.? They both seem to meet the code requirement for shear walls (two W1.7 wires)
  12. IceNine

    Discontinuous chords in wood framed building

    I have a situation where the exterior walls between shear walls step multiple times, making the double top plate chords discontinuous.(See diagram below x=shear wall) The floor framing runs parallel to the shear walls. I was thinking of considering the depth of the diaphragm to be the distance...
  13. IceNine

    Moment frames in two directions

    Does anyone have any advice on using steel moment frames (IMFs) in two directions for a building in Seismic Design Category D? Specifically, is it even possible to use prequalified connections in each direction at the same joint?

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