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  1. mark519

    Straighten a leaning masonry wall?

    A client has a 12" wide, approximately 20'-0" high stone masonry gable end wall that is part of a detached garage. The garage is approximately 75 years old. The masonry wall is out-of-plumb 6" due to a large tree leaning on it. Is it possible to straighten out the wall (if so, how?) or is it...
  2. mark519

    Temporary lateral bracing during construction

    Thanks for the responses. AELLC, where is it stated in the IRC?
  3. mark519

    Temporary lateral bracing during construction

    Who is responsible for designing and providing the temporary lateral bracing for wood framing during construction? Is it the contractor's responsibility? Does the IBC (or any other code) address this? Thanks.
  4. mark519

    2010 Existing Building Code of New York State

    Thanks for your help. I went on the NY DOS website and was able to find the Amended version of the code.
  5. mark519

    2010 Existing Building Code of New York State

    Section 506.1 states "Seismic provisions of this chapter shall only apply to buildings built after January 1, 2003." In the state of NY, the applicable building code prior to January 1, 2003, was the State Uniform Fire Prevention and Building Code (the Uniform Code). The Uniform Code does not...
  6. mark519

    Horizontal hairline crack in stucco

    Ron/hokie, I realized that I made posts with two different usernames...my old one and a new one. (Different computers had defaulted to different user names). mark519 = PowersPE80 Sorry for the confusion.
  7. mark519

    Horizontal hairline crack in stucco

    Ron, In response to your questions. 1. The stucco is direct applied. There is no lath. 2. The building was built in the late 1920s. 3. The building owner said it was constructed with "large terra cotta glass blocks." 4. They are icicles on the window sills. Not stalactites. 5. It is a...
  8. mark519

    Hilti 150 MAX or Hilti 150 MAX-SD

    I am designing a new building per the IBC 2009. I need to dowel into an existing concrete wall with an adhesive anchor. Can I still specify the Hilti HIT-HY 150 MAX adhesive? Or do I need to use the Hilti HIT-HY 150 MAX-SD?
  9. mark519

    One-way slab or steel on metal deck?

    Thanks for the responses. There is already steel on the job (the tunnel is a small portion of the entire project), so the steel trade is already involved. I was leaning towards the cast in place option as you both mentioned. Out of curiousity, are there any disadvantages to the steel/deck option?
  10. mark519

    Concentrated force on HSS wall

    How can you check a concentrated force on the 20" wall of an HSS 20x4x1/2? I would normally use AISC Chapter K for this design, but Section K1.3b limits the applicability to B/t less than 35. For an HSS 20x4x1/2, the B/t = 20/0.5 = 40. Does this mean that I can not provide a concentrated...
  11. mark519

    Concrete bearing wall - slenderness effects

    If I meet the requirements of ACI 14.5 - Empirical Design Method, then can I design any concrete bearing wall by this method? At what point do I need to consider slenderness effects per ACI Chapter 10 or ACI 14.8? I have a 12" concrete bearing wall that is 18'-4" high. The architects have...
  12. mark519

    Stability Analysis - Direct Analysis Method

    I am looking for some clarification on a stability analysis and the Direct Analysis method. Is the DAM a type of stability analysis, or is the DAM just one step in the stability analysis? Additionally, it seems that everyone I talk to has a different interpretation of the process for...
  13. mark519

    CMU questions

    Everyone, Thank you for the responses. I think these are all good solutions. If in fact I still go with the cast-in-place beam built within the plane of the wall (primarily because another engineer prefers that method), do you believe that is acceptable? We would run continuous vertical bars...
  14. mark519

    CMU questions

    asixth, thanks for the response. 1. I wanted to give the contractor the flexibility to build the entire CMU wall shaft prior to erecting the steel. Therefore I do not want to provide a blockout in the wall. Another structural engineer on the job has recommended the cast-in-place beam option...
  15. mark519

    CMU questions

    I have (2) questions regarding CMU... 1. What is the best way to attach WF beams to the FACE of a CMU stair shaft wall? I was considering a cast-in-place concrete beam with embed plates built in the plane of the CMU wall, and attaching the WF to the embed plates with a standard full depth...

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