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  1. wadakis

    The period of the structure based on UBC97 method A

    I do not fully understand the structure you are designing, however, if there is no mass at 80m, then this would most likely not be the height. Your system might meet the requirements of the building on a building section. This would allow you to deign the upper structure as an isolated...
  2. wadakis

    concrete / shrinkage vs strength gain

    I have used a 56 day delay for the pour strips in similar cases. About half of the total slab shrinkage should have occured in this time. The concern is not only cracking, but P/A washing out into the walls. I would require a mix design with as little water as possible (30-34 gallons) and...
  3. wadakis

    what exactly is harmful about a little net uplift at a frame column?

    Great thread... In regards to seismic controlled frame design, the current codes actually makes uplift the yield mechanism. My frames are design to be elastic at 1.4E, however, uplift is only required to be checked at 1.0E. Does this not mean that my footing will uplift before any yielding...
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