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  1. yfalsada

    Design of 500mm wide Architectural Projections for edge beams

    I have a 200mmx500mm primary beam that is at the edge of the construction, matching the line of columns. The architect has revised the elevations to show that there is a projection outside the beam line, 500mm x 500mm. The projection has a self weight of 6 kN/m and will carry only the load of...
  2. yfalsada

    A Cantilever slab with no backspan?

    @dik: The problem with the beam is that it won't fit with the architectural elevation (it's going to be in the middle of a recessed entrance area, no false ceiling). When using 300mm thick slab, using same applied loading for Fcu = 35N/mm2, then: * Deflection from linear analysis, with inertia...
  3. yfalsada

    A Cantilever slab with no backspan?

    @Steveh49, Tomfh, dik: Thanks to your input, I decided to recheck the modeling and it does look like it was a modeling issue. I isolated the slab separately and defined line springs to simulate the beam, and it looks like its safe structurally but the deflections are a bit on the high side...
  4. yfalsada

    A Cantilever slab with no backspan?

    @Steveh49: The magnitude of the deflection is ridiculous (23400mm) when the joints are pinned. The section is uncracked, the analysis is linear elastic at short term properties. FYI, SDL = 3kN/m2, LL = 2kN/m2. Concrete cube strength is 35N/mm2, rebar yield strength = 460N/mm2. @KootK: I thought...
  5. yfalsada

    A Cantilever slab with no backspan?

    I'm getting stability issues when I convert the slabs to pin joints. See attached.https://files.engineering.com/getfile.aspx?folder=095da9b8-146c-41a9-9144-7a7afc4508bb&file=3-sidedpin.PNG
  6. yfalsada

    A Cantilever slab with no backspan?

    Edit: When the slab is modeled in 3-directions with pin joints only, it seems to be unstable in the FEM software (I'm getting ridiculous deflections)
  7. yfalsada

    A Cantilever slab with no backspan?

    Hi, I am in the process of reauthenticating the design of a villa already in progress made by a former colleague who left our company. The villa consists of a G+1 floors, with provision for a future floor. Currently, Superstructure works up to the 1st floor columns are completed, and the...

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