The slab has been poured. For the first two days, we had to water it well at 30 degrees to prevent cracks in the concrete. For the past two days, it has been raining continuously, which saves us that. The calcium silicate bricks will be delivered in the coming days. I just need to decide whether to order the bulk density 1.4 or 1.8. Do you think that will have a big impact on the resistance when hitting it, for example with a wheelbarrow?