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  1. Dannnnnny

    Wood shearwall reinforcement in seismic retrofit project

    Hello all, need help in figuring out reinforcement approach to one of mandatory soft-story projects that i'm handling now. So it's a 4-story building and I'm trying to reinforce one of sides with wood shearwall. However, since I can only place shearwall one side, i.e. outside, as placing...
  2. Dannnnnny

    Opening in Existing CMU Wall

    So, i'm making an opening in existing CMU wall. The existing rebar size and spacing is fine when I take it as Special reinforced cmu wall, R=5. But as far as I know, existing cmu wall has to be treated as ordinary and thus R value has to be 2. Please let me know if I'm fine to treat the existing...
  3. Dannnnnny

    Vibration at floor level (steel beams and wood joists)

    so there isn't any vibration criteria in code books,I wonder how others would approach to this problem. I've got a dancing room which is supported by steel beams and wood I-joists. Although all the members pass the design criteria, the vibration is now the problem after the construction...
  4. Dannnnnny

    2hr fire-resistive construction.

    For 2hr fire rating purposes, I have been using either pyroguard or d-blaze. But sometimes due to the span or simply bearing, these coated sawn lumbers don't satisfy. I have happened to hear that glulam could be used for same purpose (2hr fire rating). Does anyone have some sort of docs that...
  5. Dannnnnny

    cantilevered column system

    Based on my experience, for single story building, OMF and IMF can still work as I believe its height is less than 35'. I would still open an option for ordinary cantilever column too. SMF is definitely a heavy deign for a single story building. Often, what i usually do is, place cantilever...
  6. Dannnnnny

    Steel Moment Frame

    I previously designed IMF for 3-story house. The lateral resisting system of the two top floors were wood shearwall and the lowest floor was IMF. So, based on "standard quality assurance plan for steel moment frames" provided by the city, it is given that the steel column must extend at least...
  7. Dannnnnny

    concrete slab (deck) on top of basement wall

    @retired13 thanks for the info. appreciate it
  8. Dannnnnny

    concrete slab (deck) on top of basement wall

    KootK, some parts still cantilever while some don't due to the presence of opening(stair). I was considering to span a beam halfway through so that would make it a 15' spanning one way slab
  9. Dannnnnny

    concrete slab (deck) on top of basement wall

    i'm designing a small house (30x40) at hill side, where i have 30' cantilevered retaining wall as a perimeter. (basement and 2 floors above - so two bottom floors are under soil where temporary shoring is needed) im considering to have slab on top of basement concrete wall where the rest...

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