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  1. JSMHA

    Roof Screen MWFRS

    Understood that MWFRS and C&C are separate and not additive. My main confusion is there is not a specific section under the MWFRS chapters that covers rooftop equipment (roof screens). Section 29.4.1 is the only section that I have seen be applied, but if applied for MWFRS actually gives a...
  2. JSMHA

    Roof Screen MWFRS

    For a rooftop screen, I have read that provisions for wind loading on rooftop equipment can be used if the screen is set in enough from the exterior wall. Otherwise, parapet loading should be used. This appears to be primarily for Components and Cladding load, as ASCE 7-16 Section 27.3.4...
  3. JSMHA

    ASCE 7-16 Commentary Wind Exposure Open Patches

    I have a building that is between exposure B and C. I am trying to check the open patches section of the ASCE 7-16 commentary to make a rationale determination. Note 4 of the figure in the commentary is not reading clear to me. The note says if the open patches within any of the three radii is...
  4. JSMHA

    Concrete Column Moment at Transfer Slab

    Our office is using Ram Structural System and Ram Concept to model and analyze a two way concrete flat slab with 5 stories of wood framing above. With these concrete transfer slab buildings we have noticed a significant amount of moment at the top of the concrete columns. We are essentially...
  5. JSMHA

    Two Way Slab Stiffness Modifiers

    I am using RAM Concept to design a two way slab with edge beams and supporting columns. Most of the design examples I see seem to run the models with no stiffness reduction factors. Based on my interpretation of ACI 318-19 Section 6.6.3.1 it seems at factored loads the reduction coefficients...
  6. JSMHA

    Live Load + Snow Load at Assembly Roof

    I was wondering how people handle the snow load at assembly roofs where the live load is 100 PSF per the code. Are people applying full snow load on the roof with the assembly live loading? Based on ASD design 2015 IBC Equation 16-11 provides a load combination of D+.75L+.75S. ASCE 7-10 provides...

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