Deck railing post layout for 135 degree corners

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Topic by dvhart posted 04-03-2011 06:19 PM 12517 views 0 times favorited 4 replies Add to Favorites Watch
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12 posts in 3490 days

04-03-2011 06:19 PM

I’m working on placing the railing posts for a deck with an inside and outside 135 deg corner. My posts will be on the inside of the rim joists. I’m wondering if I need two posts at each corner, or if I can get good results with just a single post. Is there a standard practice here?

I’ve posted some pictures, including a plan view, of the deck: http://homerefurbers.com/projects/431

Thoughts appreciated!

-- Darren

View dfletcher's profile


128 posts in 3939 days

04-04-2011 01:51 AM

It depends on your railing detail, but one post should work just fine. From what I could tell, since your drawings are somewhat small on my screen, it looks as if one post would do fine for each spot.

I generally do just 1 post, then cut the rail to the angle, set in the middle of the post.

View dvhart's profile


12 posts in 3490 days

04-04-2011 02:08 AM

The railing detail is very simple, top and lower 2×4 rail. 2×2 balustrade with 1×2 upper and lower sub-rails. 2×6 cap rail. Just like the finished railing on the upper deck in the photos. I’ve replaced the plan image with a larger one… but the site’s photo viewer doesn’t seem to allow for full size download.

I’m also considering building more column wraps (like the 8×8 wraps visible on the upper deck), these are large enough that each rail intersecting the single post would have enough column surface to mount to. These things are time consuming though and I’m trying to be conservative with how many more of those I have to build. They are also more maintenance with the miters, the molding, etc.

Using one post at each corner is appealing, with all these angles, I have plenty of posts to deal with already :-)

-- Darren

View dvhart's profile


12 posts in 3490 days

04-04-2011 08:13 AM

In case anyone would like to see a PDF (much higher resolution than the project page photos) I’ve made them available here:

Lower Deck and Railing Plan

and here:

Stairs and Railing Plan

My local code allows for a stair guard rail between 34” and 38”. I think 34” feels a bit low, so I’ve drawn mine at 36” from the tread nose. I plan to add a grab rail between 30” and 34”.

-- Darren

View popztoolz's profile


16 posts in 3533 days

04-19-2011 11:54 PM

Darren: Usually a single post is used for any corner. Your situation is somewhat different in the fact you have an angle other than 90 degree. Since your original deck posts are large in size it won’t look out of place to have a bigger post at these corners. If I where building for one of my customers I would start with a 6×6 post and cut into a keystone shape. This will give you plenty of surface are for the rails to attach rails to. Sorry about the small size, 1st time attaching a picture.

Hope this helps.
William G. Yasovsky Michael Yasovsky Construction Bellefonte, PA

-- William G. Yasovsky, Michael Yasovsky Construction, Bellefonte, PA

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