Fastening ledger or ...?

[northernlight65]

Hello
I am going to build a deck that connects the garage with the house. It is two meters wide and about 10 meters long, but how do I attach the load-bearing beam?
Both buildings have concrete slabs. The garage has edge elements with 50 mm insulation and the house has edge elements with 100 mm insulation. Polystyrene in both cases of course.
I imagine the screws will be very long, but how long do they need to be?
Do I need to fasten with screws?
Can I have the load-bearing beam on terrace pads?
Meaning the deck would be (almost) free-standing.
Any thoughts are welcome and I hope I have explained sufficiently.

 

[carrera86]

Do not attach the bärlinna to the slab but place it loosely on concrete slabs; it won't move anyway. You might use an adjustable terrace foot, making it very easy to level it.

 

[northernlight65]

Do not attach the beam directly to the slab; instead, place it loosely on concrete slabs, as it won't move anyway. You could potentially use an adjustable terrace foot, making it very easy to level it.

I've been considering that approach as well. Using a post or terrace feet to level the beam and then sort of clamping the beams with short beams. A terrace foot seems like an appealing solution.

 

[carrera86]

Yes, you shouldn't complicate things unnecessarily.

 

[ToRy]

A general reflection and naturally not something directed at you TS:
I have a hard time understanding the point of attaching a deck to the house. In all cases except the very best, there is a risk that the house and the deck move differently, which inevitably leads to differences in level between the inner and outer edge of the deck. Often maybe not by much. On the other hand, what's the point of fastening it to the house? Besides the laziness of avoiding a few footings... The deck is hardly going to walk away any significant distance if it's not attached to the house...

Make the deck freestanding, it will work excellently.

 

[northernlight65]

A general reflection and of course nothing directed at you OP:
I have a hard time understanding the point of attaching a wooden deck to the house. In almost any situation except the very best case, there is a risk that the house and the deck move differently, which inevitably leads to level differences in the inner and outer edge of the deck. Most often, maybe not so much. On the other hand, what is the point of attaching it to the house? Apart from the laziness of avoiding a few pillars... The deck will hardly walk away any longer distances if it's not attached to the house...

Set the deck free-standing, it will work perfectly.

I can agree with you about attaching it to the house structure. I assume it is standard just because it's easy (laziness). One of my considerations is (was) that I "cannot" dig down pillars due to drainage pipes, but adjustable deck supports on paving stones will probably work just fine.