Dimension a deck above ground

[Hustomt-e]

Hi, I have planned to build a deck according to the picture, the beams will be 4m long between the attachment points, is dimension 45x220 sufficient??

 

[hantverkare1]

You must have a bärlina in the middle. Will sway otherwise.

 

[Hustomt-e]

Be afraid of it, having a hard time digging plinths right there

 

[hantverkare1]

Was afraid of that, having a hard time digging pillars right there

Why? Can't you lay stone slabs?

 

[Pannlampa]

You should also add two concrete slabs along the load-bearing beam. Aim to not have more than 2 meters between slabs in any direction.

 

[Hustomt-e]

I have the well in the middle under the patio, perhaps it is possible to place posts on each side of it but I had hoped to avoid that with a larger dimension (45x220). I saw in a table that it should handle 4 meters. Could glulam beams be an alternative??

 

[Nimajneb]

Regarding footings and extra support beams, you have already received correct advice; there are no shortcuts.
On the short side, I think you should lay the decking in the same direction as on the long side.
It looks very high, are you aware of what requires a building permit in your municipality?
Plan for the frame and posts already now.

 

[Danne_83]

If you go down to s400 and quality C24 for the floor joists, it is largely dimensioned according to the standard. However, I cannot promise that it won't sway a bit in the middle as stated above. I don't really know if you can buy pressure treated timber in C24 either, but the lumberyard surely knows.

 

[Hustomt-e]

Thanks for all the tips, I'll have to go out and measure a bit to see how I can solve this, with the eaves the ends on the short side aren't visible either.. but with 2 meters between the joist hangers, I can go down to 45 x 170, right?

 

[Hustomt-e]

I get up about 1.8m because I hit the fontanelle in the old inadequate one today, the limit for building permits is 60 cm.

 

[Nimajneb]

Why joist hangers? Easier to lay the floor joists on top of the beam

 

[Hustomt-e]

Nimajneb wants to set the main beam against the basement wall, under the panel but not so low that I can't open the door. I can have the main beam in the middle lower, but I'm a bit vain too

 

[Hustomt-e]

Here's how it looks now, with a beam in the middle and a maximum of 2m between the footings there are 12 of them, it's going to be some work to dig down to frost-free depth, but I don't want to take any shortcuts. I'm demolishing an old deck that the previous owner built poorly.

I've drawn 45x145 for the floor joists which span a maximum of 2m to the beams in 45x170. The middle beam is underneath so I can lay whole 4m floor joists, thanks for the tip on that! Feedback, anything else to consider?

 

[Locke]

Moment capture at the nodes.

 

[Pannlampa]

I think it looks much better now.

What is in the ground you will dig for the plinths? If it isn't rocky, I recommend you buy a manual earth auger, costs around 200:- and is available at jula, cheapy etc. Speeds up the digging for the plinths considerably.