Opening in Balloon framed wall

[dumaszarktek]

Anyone ever create an opening in a balloon framed wall? This is on the first floor of an exterior wall, 3 story home.
I am concerned about the means and methods of demo as an architect. I do have a struct. engineer on the job.

I am thinking to cinch ea stud with (2)C3x6 and (4)1/2" bolts @ 5" o.c. vert. and transfer that load to 9" LVL's that rest on
(2) temporary 2x4 walls. I estimated the load on ea stud at 1385 lbs.

Please let me know your thoughts.

 

[XR250]

Let the GC figure it out.

 

[dumaszarktek]

I could take that approach but there's a chance they don't understand the situation of the joists they are supporting
have only a nailed connection to the wall.

 

[XR250]

There is a lot of liability in a shoring plan. I typically will not do one.
Convey to the GC your concerns in a construction meeting.

 

[dumaszarktek]

good advice, I am best to stay away from it.

 

[lexpatrie]

The structural drawings can address this one way or another, either through giving advice (unlikely) or by saying "get somebody to figure this out for you, I'm not doing it". I've seen some engineers offer advice on underpinning, which seems similarly unwise. Unless you are on site, it's tough to really get into this.

Most structural engineers won't do shoring plans or temporary works (i.e. cribbing and formwork), it's a bit of a niche. As an Architect, I'd pay some attention to making sure whoever is doing this has appropriate insurance, to start with. And that wouldn't be a GC. GC's generally don't have insurance for work they perform themselves. At least where I am. Their insurance is most typically for oversight, supervision, and whatnot, not for the actual work performed (because subcontractors are supposed to be used for the actual work).

 

[dumaszarktek]

I have decided not to show any details for the shoring. My engineer is in a neighboring state so even he can't officially submit anything, it would
have to be on my drawings.
The project is in NY, heavily regulated, and permits are not issued without GC insurance.

 

[lexpatrie]

Get a New York engineer....

And to reiterate, if the GC does the shoring they generally don't have insurance for work they self perform. The state is not going to care about the status of insurance "loopholes" that's your job, to protect your client.

 

[XR250]

Get a New York engineer....

And to reiterate, if the GC does the shoring they generally don't have insurance for work they self perform. The state is not going to care about the status of insurance "loopholes" that's your job, to protect your client.

Doesn't the GC's general liability insurance cover that?

 

[lexpatrie]

Try reading a description of what general liability is. Stores have it. For customer slip falls.

https://www.hiscox.com/sb-lp/general-liability