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  1. masterthenight

    Roof Deck Miami-Dade

    Check with the manufacturer you would like to specify. They want their product approved in FL so they should be abreast of the situation already.
  2. masterthenight

    Question on an example of designing retaining wall

    I glanced at it real quick. Mc = 385.7*2.9/2 + 2.9*38.4*1.4*1.45/4 - 91*2.9*2.9/2 - 51.8*2.9*2.9/2/3 385.7*2.9/2 = M clockwise due to down force on right 2.9*38.4*1.4*1.45/4 = can't figure this term out, but lots of recognizable values in there 91*2.9*2.9/2 = M counter clockwise due to uniform...
  3. masterthenight

    Gypsum shearwalls in SDC D

    Can gypsum shearwalls be used to resist seismic forces in SDC D? I thought I saw something prohibiting this but I can't find it.
  4. masterthenight

    NDS 2012 - Table 11J - p100

    Thank you sir, cleared it right up! Should have known to look there.
  5. masterthenight

    NDS 2012 - Table 11J - p100

    I'm guessing this is a simple question, but I've always wanted to figure it out. In this table, for lag screws, for a given wood species, there are 4 columns of values: Z parallel Z perp side Z perp main Z perp What is the last one denoting? When designing with connections Z perp values...
  6. masterthenight

    Electronic Data Transfer Agreement

    I know this is an old post, but I feel like there are several factors at play here which are getting overlapped. 1. You need Arch drawings to do work. It is not common to sign releases between team members on the design side; however, since your contract is with the owner, I can kind of see why...
  7. masterthenight

    Shear Transfer Frame 2nd Floor Shear Wall to 1st Floor Shear Wall

    Agree with Refund. It depends how it's detailed and the assumptions which are made, therefore I believe both answers could be right (referencing original question). Option 1: If the sheathing is detailed to be lapped across the floor without horizontal joints (aka horizontal joints above/below...
  8. masterthenight

    2012 Braced Wall Lines (R602.10.1)

    Agree with OldPaper and Althalus. The IRC is a black box approach for people who aren't qualified to do engineering and also to provide a simplified approach for a basic set of criteria. Based on my personal experience, well over 50% of truly "custom" home plans that are upwards of 3000sf will...
  9. masterthenight

    Load Path to Roof Diaphragm w/ Overhang Trusses - See Detail

    I am likely misunderstanding this. If you are talking about loads parallel to the exterior wall you show, I typically specify full depth pre-engineered truss blocking designed for the correct amount of design shear. The blocking sits over the exterior wall and receives edge nailing from the roof...
  10. masterthenight

    Bagged Fill

    Thanks for all your replies. Sadly, I feel the replies in this thread are indicative of the information available on this subject - pretty scarce. It does seem clear that the bags will help to reduce the pressure on the wall; however, by how much is the real key. I can think of scenarios where...
  11. masterthenight

    Bagged Fill

    Does anyone have any information on the effect of bagged fill located behind concrete grade beams/walls? An Engineer at the company I work for is telling me that with bagged fill, the active pressure from the soil on the beam/wall can essentially be neglected. I have asked for technical...
  12. masterthenight

    Sloped light gauge rafters

    Thanks guys, I will look into all your recommendations. Really appreciate it!
  13. masterthenight

    Sloped light gauge rafters

    I have a project with a tower that has a small, monoslope roof. The tower walls are CMU. The project is mostly light gauge framing (read: no wood framing) so I am considering using light gauge rafters for the tower roof framing. The challenge I am looking at is the end bearing condition. I am...
  14. masterthenight

    CA for PEMB

    Our firm is designing the foundation for a new PEMB. The Architect has asked us to provide CA phase services including reviewing shop drawings and observing steel erection for the PEMB. Is this typical? Or would an Engineer from the PEMB shop perform those tasks?
  15. masterthenight

    Mezzanine inside PEMB

    Thanks so much for all your replies. I understand the PEMB is typically not designed for additional loads apart from the code minimums, unless specified by the EOR. I do have one tricky situation. There is a 2nd floor exit out of the building from the mezzanine. I am guessing I will need to...
  16. masterthenight

    Mezzanine inside PEMB

    My firm is designing the foundation for and the mezzanine framing inside of a PEMB. The mezzanine occupies about half the area inside the PEMB and extends to the building perimeter on three sides. We are located in SDC A. I am thinking I should design the mezzanine to stand independently inside...

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