New veranda roof

[SnickarNicke]

The porch roof was built too weakly by the previous owner, and when the snow fell off the roof, the entire structure broke.

It was a regular plastic roof with full walls around it, and I need some help with the dimensions of the beams with which I will build the new roof. So, it's only a roof that I'm going to build.

The roof is about 6x4m, and I plan to place a carrier beam on the house wall (if the existing one is too weak) and lay the beams on it that then extend straight out.

- What dimensions should I have for the beams extending from the carrier beam (2" x 8)?
-- CC between the beams (60 cm)?
- What dimensions should I have for the "battens" on which the plastic roof will lie (2" x 2)?
-- CC battens (45 cm)?

Thanks.

 

[Ola78]

Spontaneously, it feels like 45*195 studs with c/c 600 mm as you write should be enough. If you want to calculate a bit yourself, you can go here http://www.byggbeskrivningar.se/ and check out their dimensioning program. There you can calculate on a terrace with a roof.

 

[SnickarNicke]

I thought there might have been a new rule I needed to consider... but then, I guess I should just keep on working as usual.

(I couldn't find the calculation program)

 

[Ola78]

The program can be found under the link dimensionering to the left of the page if you still want to calculate it.

 

[SnickarNicke]

The program is available under the link dimensionering to the left of the page if you still want to calculate it.

Thanks, it went better now. I'm going with 2" 8 and building as I usually do... thanks for the answer.

 

[SnickarNicke]

I was thinking this would be a small job....:O

So I've been measuring the veranda and found it to be 480 x 280 and the walls are not stable at all. (The veranda doesn't belong to me).

When I checked the current support beam in the wall, it was complete rubbish and needs to be torn down. It looks like a real shoddy construction that won't withstand a bit of snow (hence why I need to rebuild it). I was planning to do a light renovation as only the roof needs replacing but I realize I will also need to support the walls a bit if they are to hold up.

I have one option.

1. If I tear down the roof and the outer wall (leaving only the side walls).
2. New support beam on the wall with beam shoes.
3. Install new posts in each corner on which I will place the outer rafters. The inner posts I'll screw into the wall and the outer ones I'll screw into the deck board.
4. Then I'll hang the remaining rafters on the support beam and on the outer support beam.
5. Use 2x2 battens and then put on the roof.

This way, I've built a stable roof "inside" the old part. Do you think that would work? Or should I just tear the whole thing down and build entirely new (costs more but would probably be much better)?

 

[Ola78]

As you describe it, I would have opted to build a new veranda, especially since it doesn't seem to be much more expensive. Any existing posts/foundation you can keep, so you don't have to think about that.

 

[SnickarNicke]

The way you describe it, I would invest in building a new veranda, especially since it doesn't seem to be much more expensive. You can keep any pillars/foundations so you don't have to think about that.

No, it probably won't be exactly the same cost since two walls are added, but it might pay off in the long run?

I was thinking something like this:
http://www.vk.se/uploaded/image/2007/5/9/altan.jpg

 

[Ola78]

I believe it pays off in the long run to build a new veranda/deck. If you build a deck like the one in the picture you linked to, there won't be so many joists that it becomes very expensive to build new. However, I thought the beam at the front edge of the deck in the picture looked a bit weak, at least when it comes to snow on the roof, but I could be wrong

 

[SnickarNicke]

I think it's worth it in the long run to build a new veranda/deck. If you build a deck like the one in the picture you linked to, there won't be too many beams, so it won't be very expensive to build new. However, I thought the support beam at the front edge of the deck in the picture looked a bit weak, especially when there's snow on the roof, but I might be wrong

It's not "my" veranda in the picture, just an example.

I plan to build a similar structure/frame, and the front support beam will be significantly stronger than the one in the picture. Also, a bit thicker posts, otherwise I believe the rafters are sufficient for 280cm out (2" 4)?

 

[Ola78]

It's not "my" porch in the picture, just an example.

I was thinking of building a similar construction/frame and the front beam will be significantly stronger than the one in the picture. Also slightly thicker posts, otherwise I think the rafters will be sufficient for 280cm out (2" 4)?

I didn't think it was your porch, it was just a pure reflection I made. It seems you also reacted to that. I also thought about the posts, not because I don't believe the posts in the picture could handle the weight but more because they looked so thin.

 

[SnickarNicke]

I just hope that the decking has a good framework so that I can secure the posts properly. Otherwise, I don't know what to do. Any tips?

I could also do it like this:
http://www.mark-bygg.se/Filer/altan/altan_stor%2044.JPG

 

[barajag]

I just hope that the decking has a good framework so that I can fasten the posts properly. Otherwise, I don't know what to do. Tips?

Dig a hole under the post, screw the post in where you want it, mount a post anchor, pour concrete in the hole so the pin on the post anchor ends up in the concrete.

Good luck

 

[SnickarNicke]

I was just going to replace the roof.... :S

It's not just about digging, I need to tear down the decking too, but maybe that's what needs to be done. I'll try to take a closer look once I've removed the roof, and then I'll see what it looks like underneath.

I thought it would be a weekend's work, but it never turns out that way... same with "I'm just going to have a beer.." d^_^b

 

[Ola78]

... same with "I’m just going to have one beer..." d^_^b

You definitely recognize that but beer is good anyway. And when you're done with the veranda, you've earned more than one beer