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  1. JohnnyB_

    Mobile Home Standard I-Beam Shapes

    Hello - I have a a client that has retained me to design a foundation. The foundation is for a double-wide trailer. Each trailer has two I beams, four total. This is a used double wide so I cannot ask a manufacturer for beam specifications. The client states that the beam is 10 in deep and 2...
  2. JohnnyB_

    Timber Frame - Simple Seismic Design

    Hello - I am designing a timber frame structure in a seismic design category D area. The structure will not have light frame wood walls sheathed to provide shear resistance. The structure is two stories with the first floor being a slab and the second floor wood diaphragm. I would like to use...
  3. JohnnyB_

    Deck Leger to an Old Brick Wall

    jayrod12: Thank you. That is very helpful. I will go review that as well.
  4. JohnnyB_

    Deck Leger to an Old Brick Wall

    phamENG: Thank you for your input. I am using epoxy rated for the brick. I am not sure what is the minimum spacing per the manufacturer is that you are recommending, I assume I am here to calculate this minimum spacing. Based on standard deck loading (D=20psf L=60psf) each 1/2" bolt has about...
  5. JohnnyB_

    Deck Leger to an Old Brick Wall

    Hello - I am designing a small deck to replace a dilapidated deck on an old historical brick building. I am assuming the brick building is at least stacked two bricks wide. I am using P.T. joists and ledger with a steel drop beam to support the deck. My issue is how to attach the deck ledger...
  6. JohnnyB_

    Micropile Design - LRFD Factors

    Thanks for all of the feedback everyone!
  7. JohnnyB_

    Micropile Design - LRFD Factors

    Thank you PEInc for the feedback.
  8. JohnnyB_

    Micropile Design - LRFD Factors

    The problem is, the person installing the micropiles is a single guy and does not have an engineering background. He installs a lot of micropile in the area but I don't feel comfortable with him doing the design under my stamp.
  9. JohnnyB_

    Micropile Design - LRFD Factors

    Hello - I am working on designing a grade beam foundation supported by micropiles. The foundation will be supporting light residential loads and the loads have been calculated using LRFD load combinations. The contractor is choosing to use micropiles as opposed to overexcavation. These two...
  10. JohnnyB_

    Notched Beam Bearing Design Failure Modes

    Thanks for the feedback guys.
  11. JohnnyB_

    Notched Beam Bearing Design Failure Modes

    Hello - I am designing a notched W-beam that is bearing on a large W-girder. The notched beam, as shown in the attachment, is not carrying a very large load. Based on my review I have analyzed the shear and moment of the reduced section due to the notch. I have included a web stiffener even...
  12. JohnnyB_

    Purlin Support Above a Glulam Truss

    This project is in SW Colorado with an arid climate. The location is approximately 9,500' in elevation.
  13. JohnnyB_

    Purlin Support Above a Glulam Truss

    Jayrod, the architect was going to use SIPs but the lead times were too long so she is planning on just spray foaming the entire cavity.
  14. JohnnyB_

    Purlin Support Above a Glulam Truss

    I agree.
  15. JohnnyB_

    Purlin Support Above a Glulam Truss

    BA, I like that and haven't given it much thought due to being stuck within my original design. Generally I do just use rafters with a ridge and plate beam to support the load. I will take a look at the associated load conditions and see if that is a better option for my design. Appreciate...
  16. JohnnyB_

    Purlin Support Above a Glulam Truss

    BAretired, thanks. That is exactly the direction I was looking for. 🙏
  17. JohnnyB_

    Purlin Support Above a Glulam Truss

    Hello - I have a large glulam gable truss that is supporting 14" LVL purlins @ 24" O.C. (see attached detail). In the plan view the purlins are spanning 18 feet from truss to an exterior wall for bearing on the opposite end of the glulam gable truss. I am calling out that full blocking is...
  18. JohnnyB_

    Foundation Drain

    Thanks for the replies.
  19. JohnnyB_

    Foundation Drain

    Hello - I am designing a garage with an ADU above. The soils are a moderately expansive clay requiring a 2 - 3 overex. Groundwater has been encountered at approximately 3-4 feet below grade. Due to this I am designing the foundation as a mono pour slab with a turndown. The turndown will extend...
  20. JohnnyB_

    Basement Retaining Wall - Buttress Addition

    PEInc - The large heel is to decrease the bearing on the soil. I am using 1500 psf due to a lack of soil information. The 60'x40' basement floor slab is restraining any sliding that may want to occur.

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