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  1. mikhelson

    strip method for two-way slabs

    The strip method (by Hillerborg and Wood & Armer) seems like the most convenient way to analyze a two way slab with irregular dimensions or boundary conditions (aside from FEM modeling). I have a few questions about the method for those who use it in their practice: Does ACI 318 allow strip...
  2. mikhelson

    How do you document your calcs?

    Pretty much everyone on this forum has to do this day in and day out. What do you use to document your calculations? MathCAD, spreadsheets, LaTeX...? Are you satisfied with the tools you use? Can you copy & paste your calcs in the report, or do they require additional editing? Thanks!
  3. mikhelson

    Grade beams

    I'm sizing square shallow footings for column load. The footings will be tied with grade beams. My understanding is that I should size the footings without taking into consideration the grade beams. In other words, when calculating the bearing capacity and settlement, I don't model the footings...
  4. mikhelson

    opening in 1-way slab

    I have a slab with a 2:1 dimension ratio overall. This is complicated by an approximately square opening adjacent to one of the beams, between which the rc slab spans. The slab span is about 30', while the opening is approximately 10' wide. My intuition is that this shouldn't force me to...
  5. mikhelson

    structural engineering grad school: which courses?

    I'll be going to a Master's program in structural engineering with the intent of joining a practice in a year. I'd like to seek your advice as to which courses are most helpful for someone like me who hasn't yet decided between highrise building design and infrastructure (bridges, tunnels). The...
  6. mikhelson

    one-way slab

    Two questions about 1-way slabs. 1) When are 1-way slabs preferable to 2-way slabs? I can only think of the ease of design and perhaps the geometrical requirements of a particular project, i.e. column locations. 2) When calculating live load reduction based on floor (or flat roof) area, do...
  7. mikhelson

    How many beam sizes to use

    I'm new to structural design/analysis and so my question may sound naive, sorry. When you design reinforced concrete, do you use a rule of thumb about how many beam/girder types to use for a given floor area? Let me clarify. Think about a structural floor plan: The beam schedule will specify...

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