Home>Discussions>YARD & GARDEN>Decks, Patios, & Porches>CREATIVITY REQUIRED: 2nd FLOOR BALCONY SUPPORTED WITH 45 BRACES AGAINST WALL
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Harboured
CREATIVITY REQUIRED: 2nd FLOOR BALCONY SUPPORTED WITH 45 BRACES AGAINST WALL
Harboured

I have a newer 2 story floathome, 2x4 construction, which at the current time has a 6' x 20 foot balcony. The balcony is attached at the ledger board and 4 vertical 6x6 supports that rest on another 6x6 that sits on the base of the float platform (think floating subfloor) about 2' from the edge of the house. So, at present, it is cantilevered off these 6x6 supports with the wrong ratio of 1:2. Corner vertical supports could not be done as the deck extends over the water. Pretty scary.

We are trying to change this deck from " scary" to "ok, but not code". At the same time, we want to use the two feet of float that currently is blocked by the current vertical support 6x6's for a 2" access walkway under the deck. We are hoping to move the 6x6 supports back to the side of the house and support the deck with 45 degree 6x6 braces against these 6x6's (which will be attached to the house). And of course, we would like to ideally do this about 4 feet out on the decking (with another 6x6 or metal bar running perpendicular to the stringers for support) so the braces are above our heads when we are walking on the float below. We have also come to the conclusion that custom steel brackets will be required.

I can only find 2 examples of something like this ******-and one was used as an example of what must never be done. Can it work if we put the 6x6's against the house to add strength to the 2x4 house to take the weight? Does the 45 degree supports have to be out to the corner? Are we thinking about this all wrong? Any advice would be muchly appreciated.

keith3267
Re: CREATIVITY REQUIRED: 2nd FLOOR BALCONY SUPPORTED WITH 45 BRACES AGAINST WALL
keith3267

I don't think your plan is a good one. Have you considered cable supports? You could run your support posts up the corners all the way to the top of the float home (houseboat?) Then you attach a heavy steel cable somewhere mid point of the floating platform to the top of the support and back down to the outside edge of the balcony frame. Now you will have clear space under your balcony for anything you want.

A 1/2" steel cable should be enough but you should have a structural engineer do the calculations to be sure. Your supports could be smaller than 6x6 as well. A 2x2 steel post with 1/8" walls welded to the float platform could serve as the supports. The anchors for the cable at the mid point of the deck should be welded to the float platform as well.

dj1
Re: CREATIVITY REQUIRED: 2nd FLOOR BALCONY SUPPORTED WITH 45 BRACES AGAINST WALL
dj1

Please upload photos.

You can upload them on a site lite photobucket.com and then give us the link.

DIYprojectjunkie
Re: CREATIVITY REQUIRED: 2nd FLOOR BALCONY SUPPORTED WITH 45 BRACES AGAINST WALL
DIYprojectjunkie

I have a long career in drawing residential plans of all kinds, and I'm guessing that what I have to say is not what you would prefer to do, but safety should not be taken lightly! If you want the structure to be safe for regular use, it would be best to have a local licensed structural engineer take a look at it because your situation is not typical when it comes to structural support in your environmental conditions. It is well worth the money because a local engineer and licensed builder/remodeler would have more experience in such situations and codes in your municipality, and therefore provide the safety that is required for the application that you have in mind.

As the saying goes, Ask three builders how to build a deck and you'll get three different answers!

Good luck!

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