Common mistakes by architects 1

[theory2code2practice]

Hi everyone!
I'll start off this thread by clearly stating that I am NOT looking to disparage any profession nor am I looking to belittle anyone's vocation.
So I'm coming across many many many architectural designs (mostly homes) where there is a clear structural mistake and/or there are details that are missed. I believe a lot of it stems from the fact that everything comes from the IRC and that's mostly prescriptive method design. I have a few other thoughts as to why this seems to be happening. I also happen to get many of the same responses from the architects and contractors when I point out the overlooked detail.

My question to the general audience is this:
1. What are some common mistakes you see made by architects and contractors, especially as it pertains to light weight framing
2.If you've ever pointed out a clear error, what was the other parties response and how did you handle it.

Again, this is not about putting anyone down. Let's keep this classy and not let this thread fall into disrepute.
I'm asking for posterity purposes. It's about how we can get ahead of common errors and how to deal with difficult situations in a professional setting in front of other professionals
Thanks again

 

[fel3]

number 6 got me!!!! Im on the floor

I tell the younger engineers that I work with, "We prepare plans and specifications for our own amusement. The contractor does whatever he damned well pleases."

BTW, my involvement with architects has been as the site civil engineer, rather than as the structural engineer. I have worked with some excellent architects. I have also worked with the other kind.

 

[jerseyshore]

Theres more of a focus on lateral design inland? I would have though closer to the coasts for winds. Interesting.
Regarding the roof framing, I agree. Have you come across hip roofs with design issues as well?

No, I mean I have to explain to architects inland that we need more shear walls. Along the coast of NJ is the only place I've ever seen requirements for lateral design from the building departments, and in the last few years they are cracking down so architects expect it going in. Inland, no one cares so it's a constant battle to justify when we need them.

Ridges, hips, valleys etc. it becomes a challenge. Houses in flood zones are the biggest hassle with funky roofs because everyone wants that 2.5 story raised house and it's hard to fit a legal 1/2 story without "creative" roof designs.

 

[theory2code2practice]

No, I mean I have to explain to architects inland that we need more shear walls. Along the coast of NJ is the only place I've ever seen requirements for lateral design from the building departments, and in the last few years they are cracking down so architects expect it going in. Inland, no one cares so it's a constant battle to justify when we need them.

Ridges, hips, valleys etc. it becomes a challenge. Houses in flood zones are the biggest hassle with funky roofs because everyone wants that 2.5 story raised house and it's hard to fit a legal 1/2 story without "creative" roof designs.

Good job on the building departments. For valley beam, I found myself explaining snow drift in two directions and having to use much higher loads. When your rafters are TJI's and your spans and over 20ft......