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Recent content by Lehigh2001

  1. Lehigh2001

    Base Shear Calculation fron IBC and ASCE-7

    Thank you, JKW05 for your kind review and comments. First of all, Ss, and S1 values were obtained from USGS website for a specific zip code. The site is located just north of DC beltway in MD. I believe the values from USGS website should be correct, aren't they? The R value should be 3 as...
  2. Lehigh2001

    Base Shear Calculation fron IBC and ASCE-7

    "9.5.5.2.1-2 is the maximum, 9.5.5.2.1-3 is the minimum, so as long as whatever you get from 9.5.5.2.1-1 is within these upper and lower bounds, then it is the value you should be using" I understand the upper and lower bound limits. However, the value from 9.5.5.2.1-1 is twice more than the...
  3. Lehigh2001

    Base Shear Calculation fron IBC and ASCE-7

    Thank JKW05 and JAE. I cannot believe I made this stupid mistake to mix IBC and ASCE-7. However, even though I use ASCE-7 02, the results are the same. Comparing Cs values from EQ 9.5.5.2.1-1 (Cs=0.0229) and EQ 9.5.5.2.1-2 (Cs=0.012), the results are still quite different. I attached my...
  4. Lehigh2001

    Base Shear Calculation fron IBC and ASCE-7

    We have a 5-story parking garage in Washington DC area with a dimension of 204’ by 120’. I am in the process of calculating the base shear due to seismic and wind loads. For seismic loads, IBC 2003 Section 1617.4 and ASCE-7 2005 Section 12.8 were used for comparison purposes. IBC Equation...

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