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  • Users: phamENG
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  1. phamENG

    Butt Weld Prequalification

    Curious if anyone is aware of a prequalification for the weld shown below. It feels like a 'hold the plate in place' sort of weld. It's a 1/2" plate on top of a W12x65. TC-L1-GF/S comes close, but maxes out at a 3/8" plate. This stuff is existing, and we're adding a small moment to this...
  2. phamENG

    2021 SDPWS - Shear Wall Safety Factors

    Looks like the good folks at AWC are looking to make my life a lot harder. 2021 IBC goes into effect in Virginia in a month (with a one year grace period), so I'm getting acquainted with some of the new referenced standards. Not loving what I'm seeing. Looks like, in the name of...
  3. phamENG

    Blockpad

    In my quest to find a replacement for Smath, I came across this. Not free but looks promising and not that expensive. Anyone messed with it? Blockpad
  4. phamENG

    EOR's Responsibility to Respond to Clients

    This is a business question, but I'm more interested in the opinions of my fellow structural engineers than other industries structured in completely different ways. Scenario: I design a building. We'll go with a house with no special inspections. Client takes the design, pays me for my...
  5. phamENG

    Square Timber Pile Splice

    I know, I know...terrible idea. 8x8 timber piles will be embedded about 14' into the ground. The design called for them to be continuous up to a second level deck, but for valid-ish reasons they can't get piles that long installed. Splice would be located a few feet off the ground. Given...
  6. phamENG

    Connecting Hurricane Ties...with Powder Actuated Fasteners?

    Question for everyone. I have a case where I need to connect a hurricane tie to the side of a steel tube. Welding is not desirable due to access issues and surrounding wood framing, and there's no room to add a nailer AND account for cross grain fun. So I was thinking...is there an issue with...
  7. phamENG

    Attic Trusses Revisited

    We had a good discussion on attic trusses a few years ago: thread507-475689 I'm curious, for those experienced (KootK! RontheRedneck!), what are some good rules of thumb for these? Span vs. depth vs. clear width of room vs. roof slope, etc. I have one client who is always shoving rooms into...
  8. phamENG

    Sleeve in Historic Masonry

    In all my past historic projects, the mechanical was put up on the roof and/or in a closet. Have one now that has units on the ground outside and they're running lines through the walls. Historic brick masonry (100+ years old, 2 to 4 wythes thick, solid with no cavity). Having trouble...
  9. phamENG

    Magnetism of Austenitic Stainless Steel Fasteners

    Before we start, yes, this is for a personal project, but I design with stainless a few times a year and also wonder for the sake of my specification writing with regard to fastener selection, etc. Austenitic (such as 316) stainless is not magnetic in its "raw" form. However, cold working can...
  10. phamENG

    New Hole in Existing Steel Beam

    Have a steel beam that needs a few holes in it for new duct work. Primarily wood construction. Not going to let them torch it...drill holes in the corners and use a grinding wheel to make the side cuts? Seems the simplest. Anyone have any insights or suggestions? I'm usually successful in...
  11. phamENG

    Fixed Ladder Design

    Looking at a stainless steel fixed ladder design. The fabricator wants to use plug welds for the rung to rail connection (punch a hole in the rail, put the rung halfway in, and fill the hole with weld. Putting aside the fact that this isn't a great application of a plug weld to begin with...
  12. phamENG

    AlumaSheath, aka Dennyboard

    I'm in the process of condemning a building to be demolished (don't worry, it's what I was hired to determine), but need to make sure my report is as thorough as possible so I can prevent any push back or back-and-forth with an adjuster. Light frame wood construction, mid-80s, eastern Virginia...
  13. phamENG

    Responsible Charge and Independent Contractors

    Background up front: small structural engineering firm providing design and consultation services to the public. I'm in the market for an engineer to help out with my firm, and I've found one (yay!). His needs match mine pretty closely, and I know he'll be a good fit as we've known each...
  14. phamENG

    Bearing Strength - CFS Framing

    I have a somewhat unique condition (thanks, framing contractor!) and I'm realizing that AISI doesn't have a bearing check - am I right or just missing something? I specified some bypass deflection clips to connect the offset wall to a steel beam. Rather than do that, the framer made their own...
  15. phamENG

    Mystery of Roman Concrete Durability Solved...or so they say

    Looks like a big study out of MIT was published last week regarding durability in Roman Concrete. Seems it was designed to be self healing, using quicklime inclusions to create deposits of CaO that could react with water flowing through cracks to fill the cracks with calcite. Pretty neat...
  16. phamENG

    Sizing Headers - Residential Construction

    Curious about how others are handling this. I've seen a lot of drawings that have a generic header schedule with sizes based on width of opening. Presumably, the worst case supported joist span is selected and a header is selected for each opening width. This lends itself well to exterior...
  17. phamENG

    Interesting Floor Panels

    3D Printed Concrete Floor System Interesting concept. Aims to reduce the amount of concrete and steel in floor systems to produce a more sustainable structure. Supposedly there are a couple buildings that are supposed to implement it in Switzerland, but I can't find any details.
  18. phamENG

    FTAO Shear Walls and the 4-Term Deflection Equation

    thread507-457014 bones - I hope you're around today. Ever hear back about this from anyone? I've got a building with lots of windows all around that are driving pier widths way down. There's enough that using strong walls for their better stiffness isn't really an option - I'd just have...
  19. phamENG

    Roof Anchorage to Historic Building

    Working on a historic structure, triple wythe brick walls. Brick is in fair shape, will be repaired where it isn't. Roof at the back of the building is shot. Rafters and ceiling joists rotten at bearing. So we'll be doing repairs. 2018 Virginia Existing Building Code governs, and says the...
  20. phamENG

    Cost of Closing an Engineering Firm

    So this is probably better placed in the 'Engineering Business Practices and Issues" forum...but it's fairly specific to structural engineers and a few of the members that I think may have the best insights don't seem to pop up over there very often. So here goes: Lot's of posts come up about...

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