Originally Posted by cjf1980
I've attached a pic with the proposed slab in black outline. The vertical lines are the rebar.
Is this a good solution?
I'll be covering the wood beams below with roofing felt #30.
I don't see any waterproofing between the concrete block and the beams which suggests it wasn't done in the early 50's.
That is in fact what i was envisioning...except for the lip. How do you plan to form that with poured concrete? That would be one fancy form. I was thinking you'd go out flush with the brick exterior.
Funny. I had started writing out "use 30lb roofing felt" to cover the joists, but I'm suspecting it's going to be difficult to get good coverage that way. You're going to have to make some sharp bends in the felt, I think, and that means the felt could crack and open up. So, I went with roofing tar. If you can make it work with roofing felt, more power to you. Much less mess :-)
I'd also run a bar of rebar from left-to-right both at the front and the back of the sill. Keep it 2" from the exterior side; 3/4 from the interior side. If you're worried about cracking, that will help. All concrete cracks. The trick is to control where it cracks.