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I get a call this afternoon by the client of a project I have not heard from in sometime. Long story short, construction has taken off and he is requesting I provide a designation of engineer form which effectively delegates another engineer as my structural observer on my behalf. I am a one...

I am trying to achieve a behavior in FEA that considers a roller support but constrains movement in the negative gravity direction only allowing it to lift off the support if the deflected shape warrants it. is there a way to do this? I've been playing around with tension/compression links that...

I've been searching for this with no luck. I have a new patio cover addition where the open end will be designed as cantilever columns (lateral checked). however, when it comes to the interface of the new patio cover and existing building (attached via a ledger connection) how do you typically...

Hi Eng tips, I'm looking for recommendations on literature/design guides that pertain to retrofitting/strengthening of URM buildings as well as implications with respect to changing the use within the building. I have always wondered (and generally defer to architects) for change of use...

Hi Eng Tips, I am treating this as a typical dowel connection and I'm used to seeing these type of connections on Glulam beams for aesthetic reasons. I don't see why they couldn't work for LVL unless I'm missing something? What are your thoughts?

I'm working with an existing condition where they constructed a wood framed wall over a cmu low wall. Not a fan of the condition but the project is a 2nd story addition over an existing car port. The (E) roof framing will be removed but they would like to maintain as much of the existing...

Is this a nutty idea? I'm imagining angle clips on either end of the steel beam. Or perhaps a plate at the end of the steel beam with thru bolts into the wood LVL. Steel is carrying relatively light loads but the span is a bit long.

Hi all, How do you handle the design of a thru rod with washer at the end of a wood beam? Assuming the beam is sized properly for all other loads is the design check at this connection primarily bearing? Providing a large enough washer to distribute the tension load? Please see attached for...

Question all, I'm trying to install a new hold down to an existing footing where an epoxy solution just wouldn't work (forces too high). I'm toying around with the idea of having them chip away at the existing concrete (leaving all existing rebar in place and not to be cut). having them set...

I'm being asked to come in and to inspect roof framing for a commercial steel framed roof of a 22,000 sq ft roof. They perform chemical processes that with time evaporate and corrode the roof framing. They've asked me to come by to inspect the framing and make sure nothing is out of the...

I am preparing a detail to have a 1 story wood framed structure over a 30" tall foundation stem wall. The slab on grade on the interior will be 30" below the top of the stem wall. I have a slight concern for rotation of the stem wall due to the unbraced nature at the top of stem wall but...

This might be a stretch, and I haven't exactly worked it out fully in my head or on paper but can CMU block be treated as it would be a wood block to transfer shear across it? There is a common cmu wall between wood diaphragm that is supported by a ledger on either side. presumably this action...

I have an existing wood framed shear wall and want to add a bit more capacity to it. I want to strengthen say the last few feet with a higher strength panel, nailing,etc. If I can resolve the additional overturning at the new wall chords, could this be an acceptable approach?

Hi All, I need to introduce some interior pad foundations inside an existing residential remodel. What are some best practices with respect to breaking the vapor barrier? I do not know yet if there is a vapor barrier but assuming there is, the installation of a new pad will break the barrier...

Hi All, I have a client that wants an open concept and it's forcing me to consider a steel beam to span 30 feet from exterior wall to the other support end. The problem is that the roof framing will interfere with the beam and it will need to be coped. I have attached a sketch for your...

Hi all, Has anyone done something like this before? Are there any issues with doing something like this other than the inconvenience of having them fabricated? I have an existing stem wall foundation that is only 6" wide and it's likely to be lightly reinforced (30s construction). I can't sleep...

I'm trying to wrap my head around this but can services be rendered for a preliminary set of plans say up to DD level instead of up to CD level? I can't seem to find any information on something like this, but my client wants to get a rough idea of what DD level structural plans would look like...

Can anyone refer a manufacturer of fire treated SCL? particularly LSL? Does this combination even exist? I am specifically looking for a FRT sill plate (2x6 or 3x6)that yields high compression perpendicular to grain values relative to its sawn lumber counterparts. I think Weyerhaeuser used to...

I'm finding a significant amount of gravity load being transferred into my shear walls in the form of in plane shear. Is this normal? I have my slab modeled and am applying stiffness modifiers to it. The configuration isn't something i would expect for this to occur. Is this strange?

Hi All, I'm having an issue calling out the welding procedure correctly. I have two beams intersecting and sitting on top of an embedded plate. I would like there to be weld between the embedded plate and the connection between the two surfaces of the bottom flanges of beams. I imagine there...