I'm going to build a deck that will be 8*8m. The house is an L-shaped house, so the deck will cover the entire corner section.
However, what I'm pondering is how to solve the post footing part. The idea is that there will eventually be a patio roof with glazing. And then, of course, you don't want it to move. So do you have any good solutions?
 
  • Gravel area next to a house with wooden steps, a charcoal grill, and a wheelbarrow. Preparation for building a deck with glass enclosure is in progress.
If you eventually plan to have walls and a roof, the demands on the plinths are higher. Additionally, if you intend to connect a conservatory to the house, further requirements will apply. A regular deck can be built on concrete slabs, but that won't suffice in your case. You need to explain what the ground consists of and how the house is founded before you can receive good advice.
 
You have similar plans to ours, first a patio and possibly enclosed later on. We went with a depth of 120 for the plinths to reach frost-free depth and 400x400 mm at the base of the plinth, after all, it's a ton or so that will be loading the plinth.
 
Okay. The house stands on a crawl space (älvsbyhus)
The ground is clay mixed with soil/gravel

The worthless thing is that there are no ready-made plinths that are higher than 700mm
 
Your footings do not need to be buried to frost-free depth if you insulate the footing holes at the top. Footings that are 70 cm high should suffice. The footings should stand on something that has a larger base than the footing itself and that distributes the pressure on the ground (=pre-cast or on-site cast concrete slab). You should avoid using the house's foundation as support. It's better for the deck to have its own foundation. A total of 16 footings should be enough to provide reasonable spans for the beams and joists.
 
Exactly the ones I've marked :) 16 in total
The plinths are meant to be placed 2m from the house/from each other. There will be a beam or whatever it's called bolted into the wall. So the deck will be a bit up since it should be by the sheet metal under the patio door so it won't be so high when entering.
 
Will probably have to dig down the pillars completely, about 600mm. Either if I cast a base for the pillar or if I buy a concrete slab.
 
Does anyone have a picture of the gaps after the decking has dried when using hidden screws?
 
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Hello.
I'm thinking about those cast-in foundations with an M16 thread in the middle. I shined a flashlight into the hole and it looked like a tube about 20cm deep, and the thread is about 25-30 mm at the top. I wonder what the tube looks like in the concrete. There must be some cross pins welded to it. It needs to be properly fixed in the concrete and not spin around. How tight can you tighten the screw in the hole?
https://www.byggmax.se/altanplint-p03512

Regards
 
Just tighten it. It won't come loose.
 
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