We have a deck that has been around for a while.
We were not the ones who built it.
It runs along 2 sides of the house, 10 meters on one side and about 11 meters on the other side.
Extends 3 and 3.5 meters from the house, respectively.
Built with 195x45 beams/joists and supports.
On two joined beams 95x45 as posts. The corner where the sides meet is about 3 meters from ground level, and the ends finish at 1 meter and 1.8 meters.
The outer supports are spliced outside the pillars and have sunk several centimeters.
The pillars are placed 2.5 - 2.7 m apart.
The railing is built with the posts continuing upwards. Clad. But they have now rotted.
So I will build a new one with posts attached on the inside of the outer support beam.
The deck wobbles significantly.
I have started replacing the outer support beam which I will splice over the pillars. And I intend to put a plank on the inside.
Is it sufficient with an outer support beam spliced on each pillar? Or will it be wobbly?
Is it preferable to have it as long and over several posts ideally?
I am replacing the posts with 95x95 posts.
I don't think this is enough for good stability.
So further plans are to put up additional rows of posts so that I have a maximum of 2 meters between wall-post-outer post.
And then I will screw short braces (is that what they are called?) on all the outer posts against the outer support beam.
I need your opinions and advice on this.
Then I wonder how I should mount the railing posts, especially in the corner.
Since the supporting post is in the corner. And then I can't screw my railing post there. Instead, it will be to the side. Then the railing will be a bit into the deck.
Do you want it to be so long and ideally over several posts?
Yes.
To be able to assess if you have the right dimensions for both the posts and the beams, a simple dimensioned sketch is needed. 3-meter-high posts made of 2 pieces of 45x95 are on the borderline.
I'm in the starting blocks to build something similar to what you have.
Please upload some pictures and sketches.
It would be interesting to see what I should consider when building, and it's easier to see what you mean.
It is the great height of the poles that is the problem because the risk of so-called buckling reduces the possible load. Either you replace the longest poles with pressure-treated ones made of laminated wood or you brace these poles in both directions, e.g., with some form of cross support.
Have the plinths shifted or what was it that sagged several cm?
One can also reinforce pillars by building onto them. You can, for example, glue screw additional boards to the pillars you already have if they are not rotten... That way, you automatically get a stronger post... Otherwise, cross braces are always strong.
I'm currently building a deck myself where the highest post is about 160cm high. I used 2 pieces of 45x120 and glue screwed them together... It feels strong enough.
Have the blocks shifted or what had sagged several cm?
You can also reinforce pillars by building onto them. You could, for example, glue and screw more battens to the pillars you already have if they aren't rotten... This automatically gives you a stronger post... Otherwise, braces are always strong.
I'm currently building a patio myself where the highest post is about 160cm tall. I have used 2 pieces of 45x120 and glued and screwed together... It feels strong enough.
The joints on the outer batten were outside the blocks. And not sufficiently reinforced.
The blocks have also sunk, yes.
