New patio area

[remus]

Hello .
This is my first post on this forum, since part is about Block Paving and the rest about the drainage of the paving I will spit this across the two forum.

First I would just like to say what a great site Pavingexpert is. I have over the past few months studied a number of the many pages on the site. Well done.
Now to my question.

1. I have started a project at home to build a new paved area around our house. This will take me until the summer I expect. Our farmhouse is a detached square house with a number of extensions added. The patio area will run out from the house about 30ft and along the house about 50-60ft. The paved area will also run around the rest of the house running out 8 - 10 ft from each of the other three sides.
If I run the paving to be 2 courses down from damp so therefore level all around the house, and a fall of 1- 80 away from each of the 4 sides of the house. What happens when I get to the 45deg line at each corner of the house? I will have the paving bricks trying to fall in two directions?

2. The foundations of the patio are made up of 12 – 18� on broken up concrete. Do I still need to use 4� of type 1 under the sand bed? Or can this be reduced the main patio works out as about 20 sq m of type 1.
thats the end of part 1 I will post the rest on the drainage forum
Kevin.

[Tony McC]

1 - having blocks falling in two directions isn't as impossible as you might originally think. What happens is that the blocks actually fall in just one direction, but it's not perpendicular to either wall: it's at 45º....




2 - If the broken-up concrete is well-compacted and free of voids, then a simple regulating course of 50mm of DTp1 will be adequate.