WARNING - my comments below are result of dealing with so-called "contractors" who made a living out of hosing customers. As such, it's pretty nasty and gritty. Mine were predominantly public works stuff, not private buildings, but the results were the same.
I think the thing that concerns me most is at first "We're not going to show you our plans or drawings, Eff you, go away", THEN they come up saying "Here's the drawings" but they're not anything CLOSE to your building. IDK who this company is or how reputable they are, but based on that AAR I'm surprised they're not already dissolved and living in Aruba. BTW, the very contract I was supposed to be the signatory for the receiver (eg the DOT) was for 8 digits (27.4 million total), regarding landscaping and irrigation on a freeway interchange. When I turned on the backflow, the hydrant effect blew out a hillside, and all the risers and (as we found out, fake) sprinklers were stuck into the ground with NOTHING under them.
13.6 million (their 50%) of 1985 dollars for $3000 worth of fake plumbing parts. And yeah, they dissolved as soon as they got wind we were wise to them. That's why I mention "aruba" as thats where they went. SO take this for what it's worth... or not.
And to add on, the plans I posted were wet stamped by an engineer on the bottom right. All 5 or so pages had the same stamp. I only uploaded the final page because it was the only page that had the complete house. I'll upload the rest here.
An additional note on the plans. I was looking through my emails with them, and on the very first email, I did tell them I was interested in eventually putting on a front porch. I didn't ask for that work to be done by them, but that's the only reason I can guess there's one on here. But as pointed out, this is just as likely to not be my plans as it is to be a mistake of my plans. Also, on these plans, there's a bottom base plate bar. My house has no such bar.
Don't matter, those "plans", wet stamped or not, have no relationship to what you have installed. "Here, have a placebo, we think you're a rube, so here's some plans, haw haw" is what I got from what they gave you. You get that, right? What they gave you has NO relationship to what they built you. It's "Here's the papers for the not otherwise elaborated GM "Cadillac" I sold you, take it and be happy", as they drop a Chevy Citation on your doorstep.
ANY company, sorry, but they should have the plans they design their buildings to (whether they be a one off or something churned out of their factory) because, well, how the hell is anyone supposed to make sense of any kind of instructions based on a "D'urrrr... we'll chuck it together any which way". They also need those to fab the parts, and know they're not losing their *** making parts. Once they said "we're not going to show you the engineered drawings for your building we engineered" they dropped trou. They knew they hosed you, and their only regret then was they got caught.
OP-I think you have to talk to them. Calm meeting. “I’ve got some concerns.”
Then you need to spend a bit on an engineer. And a quiet word with the folks who recommended them. Then decide.
I would have a number of people in that "calm meeting". Other than you, one would be an actual structural engineer who reviewed this mess, the second would be an attorney to follow the nonsense, third would be the person who inspected the building and found it severely lacking... Because I can, if it were me, I'd also have an enforcement arm of the state contractor licensing board, maybe even a member of the local law enforcement community... I've been down this road before (with multi-million dollar state public works contracts) and contractors that pull the **** they pulled like that KNOW the scam they're pulling, and have contingency plans to get outta dodge.
BTW, I guarantee they'll have at LEAST their attorneys at tme meeting.
By now, you should realize their only purpose was to remove your hard earned money from your pocket and give you as little as possible. God help you when that pile of sheet metal comes down with the local 4th of July party inside, and they start looking at who to sue, and that company will be instantly vaporware. Haw haw, too bad, so sad.... They rely on you being a "nice guy" and "not stirring up waves" and "being calm and peaceful" because that's what's expected in polite society. That's how scam artists work. You are a good citizen, they know how those rules go so they can use them to hose you. Honestly, I almost expect they woud NOT show up to any meeting as they're probably aware of the scamjob they pulled on you, and, well, Aruba. You. of course, will sue, only to find out they have no assets (being liquidated already) and will be hung out to dry, the only winner will be the attorneys..
IF you can make the pile of stuff they dumped on you work, then good for you. If you do the "right thing" and go after them, you will be out a pile of pecunium chasing ghosts (believe me, I've seen shyster contractors who are experts at this game), still holding the bag PLUS tens of thousands of legal bills (as the lawyers are honey badgers, they don't give a s#!t but they will get their money)... I would be figuring out if I could do something with what they dropped in your lap. You're gonna be out money to try to make this disaster work, but you know this.