[sandyman720]

Hi- I have seen many options on how to deck around a bay window but my situation is that my bay runs to the end of the house. Any idea how to frame the joists in this situation? There is no foundation under the bay which is why I cannot put in a ledger.

Thanks for your help!

 

[Nealtw]

Hi- I have seen many options on how to deck around a bay window but my situation is that my bay runs to the end of the house. Any idea how to frame the joists in this situation? There is no foundation under the bay which is why I cannot put in a ledger.

Thanks for your help!

Do you know how the floor is framed below it? Can you add that to your picture.

 

[sandyman720]

Hi- as mentioned no foundation under the bay but the floor is framed with truss joists. I will check to see the detail of the ends.

Are you thinking that if the floor joists are one piece thru the bay then it would be enough for a ledger board to grab onto?? Never thought of that and that would be a good news.

 

[Nealtw]

Hi- as mentioned no foundation under the bay but the floor is framed with truss joists. I will check to see the detail of the ends.

Are you thinking that if the floor joists are one piece thru the bay then it would be enough for a ledger board to grab onto?? Never thought of that and that would be a good news.

No I wasn't thinking that, I am not sure that is ever allowed.

 

[sandyman720]

Well thanks to you I just went ahead and took a look at the floor construction. Looks like there are 8' 2x10's that are cantilevered under the bay and go back into the house and are nailed into the sides of the 2x material for the floor trusses. I think the 2x10 rim would be a solid surface to to even though it is not sitting on a sill. Would you agree or do you think there is another alternative?

 

[Nealtw]

Well thanks to you I just went ahead and took a look at the floor construction. Looks like there are 8' 2x10's that are cantilevered under the bay and go back into the house and are nailed into the sides of the 2x material for the floor trusses. I think the 2x10 rim would be a solid surface to to even though it is not sitting on a sill. Would you agree or do you think there is another alternative?

No I don't, so your floor is 8" and your deck frame should be 6" below the sub floor, is that what you were planning for?

 

[Clutchcargo]

a free-standing deck might be your best option.

 

[Nealtw]

Hi- as mentioned no foundation under the bay but the floor is framed with truss joists. I will check to see the detail of the ends.

Are you thinking that if the floor joists are one piece thru the bay then it would be enough for a ledger board to grab onto?? Never thought of that and that would be a good news.

try this. Out the two doubles in below the box out and set the cross double on top of them

 

[chandler48]

You must free stand any deck surrounding a bay. You cannot connect anything to a part of the bay window. https://www.awc.org/pdf/codes-standards/publications/dca/AWC-DCA62012-DeckGuide-1405.pdf See page 15

 

[sandyman720]

Here are pictures of my specific case. Note right to the left of the bay (when looking at it) is a walkout basement. The original ledger was bolted right to the bay.

I also attached pictures of what it looks like under the floor. Like I mentioned, a 2x10's sistered to the side of the floor truss. The 2X10 extends past the sill plate and cantilevers to the end of the bay.

 

[chandler48]

Just couldn't hold the computer long enough upside down. Nope, strictly forbidden to attach anything to an overhand or bay window like that. It must be free standing.

 

[Nealtw]

Set the 2 ply on that concrete wall to the left???

 

[3onthetree]

The 2x10s are running parallel to the open webs and just nailed to its chords? Yikes!

Chandler called it on your framing. That concrete sticking out next to the bay looks like a stoop with probably no footing or frost depth.

 

[sandyman720]

The concrete is actually for walk out basement steps.