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  • Users: joanrizu
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  1. joanrizu

    R factor supermarket warehouse

    I'm designing a reinforced concrete building, for a supermarket. It has reinforced concrete frames in each of the four sides of the rectangle (40x25m), columns approximately every 6m, two levels of beams: +2.50 and +5 m. Steel trusses simply supported on corbels, to support lightweight roof...
  2. joanrizu

    non-conventional silo or bunker

    Owners of a grains factory have suggested me to approve the design of this type of silo or better "bunker", annexed diagram and photo. 120x60x2.5 mm HSS steel columns each about 1 m, 1 m embedded in the ground, ring beams every 2.50 mm HSS 120x60x2.5 my tensioning rods in 1 / 2 " at each level...
  3. joanrizu

    roller coaster model

    I am checking an existing roller coaster steel structure. We have original drawings but I need to check the model. Does any body know how could I model dynamic car loads with etabs or sap? Thanks,
  4. joanrizu

    floating stair

    I'm designing a floating stair with cold rolled steps, wall concrete-mounted. Section is 305x80x25x2.0mm ("C section") and the cantiliver span is 160mm. Figures are ok but now in building work the section is twisting and deflecting. What could I do?. How could I design properly these elements?
  5. joanrizu

    etabs plus and sequential construction case

    I am designing a building without a column in the first story. I´ve found that if I run an elastic analysis and then I define a sequential construction case, etabs plus v.909 makes an analysis and gives results that makes sense. But I am not sure that etabs plus results are correct, because...
  6. joanrizu

    etabs detailer

    I have read that csidatailer is only for safe, what software programs are good reinforced concrete datailer for etabs results?
  7. joanrizu

    lost digits

    I have found that in many models the Etabs draws secondary beams with their extreme points a little out of line with the mean beams, if they are not orthogonal. When I check the model the report says it is correct, but when I do analysis program reports many points with lost digits. If you move...
  8. joanrizu

    members proportions

    Could I rename a slender column like wall to avoid seismic limits of ACI Code? Could I have big wide beams framed with slender "walls"? Wath about reinforcement development and about joints in this kind of structure?
  9. joanrizu

    slender concrete walls framed with wide beams

    I am trying to design a small residential 2 story building in high risk seismic zone, but arquitect doesn’t want wide columns, he wants columns of the same width of the partition walls. Is possible to model the building like a frame with some slender walls replacing columns, but with wide beams...
  10. joanrizu

    slender concrete walls with wide beams

    I am trying to design a small residential 2 story building in high risk seismic zone, but arquitect doesn’t want wide columns, he wants columns of the same width of the partition walls. Is possible to model the building like a frame with some slender walls replacing columns, but with wide beams...
  11. joanrizu

    software for steel joints design

    I have worked with concrete frames, but I'm now starting with steel frames, I've found that analysis and design of the structural members is straightforward, but the joints design in seismic zones is difficult and tediosus. Are there some software or sheets to deal with these joints? Where can I...

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