Raising the ground over basement window, building a "light well"

[klaskarlsson]

[bild]

Now the slab is cast, that it looks amateurish I don't need to hear The surface mostly slopes towards the drain.

What I'm wondering about now is how I build the outer of the walls I'm going to cast against, the inner is easy, 3 OSB boards with some studs for support, no problems. Then when I build the outer one, I was thinking of putting the OSB board all the way down against the Styrofoam and then tight against the concrete, but how do I ensure the distance is correct all the way without being able to set any through spacers?

I think it looks pretty good - it'll be exciting to follow the continuation

/K

 

[SueCia]

Now the walls are cast,
However, I have reinforced incorrectly, I reinforced with standing upside-down U's that I have tied into the reinforcement bars protruding from the slab, I now realize afterward that I should have reinforced with lying U's.

 

[mexitegel]

Looks great

And it's true about the reinforcement, but there should be no danger in your case - we are not talking about large loads here. In hindsight, the best thing to do is to pull up the reinforcement bars that you placed at the edge to a few cm below the finished wall and then connect these with horizontal U's to form a grid pattern of about 10-15x10-15 cm.

 

[SueCia]

Looks great

And it's true about the reinforcement, but it shouldn't be a problem in your case - we're not talking about significant loads here. In hindsight, the best approach would have been to extend the reinforcement bars that you embedded in the edge up to a few cm below the finished wall and then connect them with horizontal U-bars to form a grid pattern of approximately 10-15x10-15 cm

Ahh, that's exactly what I realize I should have done, but I hope it holds anyway, it was way too tedious to deal with this...

 

[vectrex]

Now the walls are cast, [bild]
However, I have reinforced incorrectly, I have reinforced with standing upside-down U's that I tied to the rebar sticking up from the slab, I now understand in hindsight that I should have reinforced with horizontal U's.

Great job and nicely cast!

 

[klaskarlsson]

Now the walls are cast, [bild] I have, however, reinforced incorrectly, I have reinforced with standing upside-down U's that I've tied to the rebar sticking up from the slab, I now understand after the fact that I should have reinforced with lying U's.

Looks good! The reinforcement shouldn't be critical in this application...

On the outside of the walls in the caisson, will you be laying some form of Platon mat or similar to avoid moisture problems in that construction later?

/K

 

[SueCia]

It will be gravel within the nearest decimeter from the kasun, should be enough as moisture protection, right? Buying a Platon mat for 800 kronor is not an option :S

 

[klaskarlsson]

There will be gravel within the nearest decimeter from the caisson, should be enough as moisture protection, right? Buying a Platon mat for 800 bucks is not an option :S

Maybe you can go a bit old-school and paint with cold tar or something instead? Gravel closest is good, and probably a prerequisite, but you still want to prevent the concrete from absorbing moisture - styrofoam insulation might also work, together with a small plastic edge on top to prevent rainwater from seeping down between?

/K

 

[SueCia]

Now it's done!
Before pictures:



After pictures:



I didn't bother to waterproof the outside of the kasun, we'll see how it goes, a layer of gravel at least breaks the capillary effect from the soil.

 

[Testarn]

Turned out great! Good job!

 

[klaskarlsson]

Nice. Well done - looks great! Much more professional than the "dippen" that was there before

/K