I am planning to build a wooden terrace near my summer house.

I have about 35 leftover steel reinforced concrete slabs that are 137x31x3 cm in size. They weigh about 30-50kg each. I would like to use these slabs as a base for the terrace.

I have asked a few people and everyone said I would have to also make concrete columns (footers) underground to support these slabs. Those columns would be around 50cm high and 10cm in diameter. It seems to me that if I make these columns then I don't need the slabs themselves.

Is there a way to make a decent base from the slabs alone? My idea was to lay them one on top of another on the ground, dig them in a bit, 5 cm or so, and attach the terrace at a few points.

The ground is dirt with some sand mixed in. Is there a way I can prepare the ground so it's more solid? I am currently making it flat and will cover it with landscape fabric (to prevent grass from growing) and then will pour coarse sand/gravel on it about 2cm deep. I was planning to lay the slabs on top of the sand/gravel

Here is a link to my sketch of it all. https://ibb.co/tQjVj75

Blue squares are the slabs, pencil marks are the supportive beams for the terrace. 5x15 boards. Spaced out at 90cm intervals.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.