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Recent content by Nerbie97

  1. Nerbie97

    Suspended garage slab over basement

    You're absolutely correct. I actually do have a meeting with him this weekend which I plan on presenting to him different construction methods (yes, the steel deck on interior pilasters is still in the cards, he loved the idea after getting quoted $30k for the concrete slab (albeit without...
  2. Nerbie97

    Suspended garage slab over basement

    Hmm. You guys are correct. I initially chose the 54kN as I understood the space as a "driveway and sidewalk over areaways and basements." Upon further reading, those areas apply to areas such as parking garages, driveways, curbs & sidewalks physically accessible to large vehicles like garbage...
  3. Nerbie97

    Suspended garage slab over basement

    Thankfully I did an inspection earlier this year which exhibited exactly this phenomenon - safe to say it stuck with me enough to remember. Thanks.
  4. Nerbie97

    Suspended garage slab over basement

    It really is the 54kN point load - using the moment coefficient method prescribed in CSA A23.3-19 (Annexe B - Informative) (I believe ACI also used to offer this method for two-way slabs) I achieve a moment of 21 kn-m in my short span with a factored load of 17.5kPa. (8.5 kPa dead, 9.0 kPa live...
  5. Nerbie97

    Suspended garage slab over basement

    hokie66, I read your response in an older thread at https://www.eng-tips.com/viewthread.cfm?qid=419349 From what I understand, you're suggesting sort of the same thing here. I shall design the slab reinforcement assuming pinned connection to the four walls, and design the foundation walls as...
  6. Nerbie97

    Suspended garage slab over basement

    You're right, it will be a reinforced concrete wall. Except the houses around here have very minimal reinforcement in the walls themselves, which is why I wanted to avoid relying on the wall for any other resistance besides compression in the first place (hence the idea of beams on pilasters...
  7. Nerbie97

    Suspended garage slab over basement

    Hmm. Okay. I see it as three separate pours - 1. Foundation walls, with dowels/development bars in place at top of wall, 2. Slab, 3. Curb. I'm having trouble wrapping my head around the effect the slab has on the wall itself. I understand that assuming the slab as pinned will provide for a more...
  8. Nerbie97

    Suspended garage slab over basement

    Thank you very much for your inputs rowingengineer, BAretired, hokie66. I am re-visiting my concrete calculations, and admittedly I may have subconsciously favored the steel construction for the following reasons: I am much more comfortable with steel's behavior as a material and its'...
  9. Nerbie97

    Suspended garage slab over basement

    Hi all, A friend is building a new house, and has approached me to design his suspended slab which will support a two-gar garage above. The area below will be storage space. The plan dimensions are roughly 5500mm x 6000mm and he does not want to have any columns interrupting his space below...

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